TM-11-5895-878-14-and-P
TM 11-5895-878-14&P
TECHNICAL MANUAL
OPERATOR'S, ORGANIZATIONAL, DIRECT SUPPORT, AND
GENERAL SUPPORT MAINTENANCE MANUAL
(INCLUDING REPAIR PARTS AND SPECIAL TOOLS LISTS)
TECHNICAL CONTROL, PATCH AND TEST FACILITY,
PENTAGON, WASHINGTON, DC
HEADQUARTERS, DEPARTMENT OF THE ARMY
JUNE 1979
WARNING
The fumes of TRICHLOROETHANE are toxic. Provide thorough ventilation whenever it is used,
avoid prolonged or repeated breathing of vapor. Do not use near an open flame or hot surface;
trichloroethane is nonflammable but heat converts the fumes to a highly toxic phosgene gas.
The inhalation of this gas could result in serious injury or DEATH. Prolonged or repeated skin
contact with trichloroethane can cause skin inflammation. When necessary, use gloves, sleeves
and aprons which the solvent cannot penetrate.
TM 11-5895-878-14&P
TECHNICAL MANUAL
No. 11-5895-878-14&P
}
HEADQUARTERS
DEPARTMENT OF THE ARMY
WASHINGTON, DC, 5 June 1979
OPERATOR'S, ORGANIZATIONAL, DIRECT SUPPORT,
AND GENERAL SUPPORT MAINTENANCE MANUAL
(INCLUDING REPAIR PARTS AND SPECIAL TOOLS LISTS)
TECHNICAL CONTROL, PATCH AND TEST FACILITY,
PENTAGON, WASHINGTON, DC
REPORTING OF ERRORS
You can improve this manual be recommending improvements using DA Form 2028-2 located in the
back of the manual. Simply tear out the self-addressed form, fill it out as shown on the sample, fold it where
shown, and drop it in the mail.
If there are no blank DA Forms 2028-2 in the back of the manual, use the standard DA Form 2028
(Recommended Changes to Publications and Blank Forms) and forward to Commander, US Army
Communications and Electronics Materiel Readiness Command, ATTN: DRSEL-ME-MQ, Fort Monmouth, NJ
07703.
In either case a reply will be furnished direct to you.
CHAPTER
Section
CHAPTER
Section
CHAPTER
Section
CHAPTER
Section
CHAPTER
APPENDIX
1.
I.
II.
2.
I.
II.
III.
IV.
V.
3.
I.
II.
III.
IV.
V.
4.
I.
II.
III.
IV.
5.
A.
B.
C.
APPENDIX
D.
Section
I.
II.
01
02
03
04
05
Group
Paragraph
Page
INTRODUCTION
General............................................................................................................. 1-1
1-1
Description and Data ........................................................................................ 1-6
1-1
STATION APPLICATION AND EQUIPMENT FUNCTION
Station Application ........................................................................................... 2-1
2-1
Typical VF Circuit and Patch Panel .................................................................. 2-2
2-1
Typical Black and Red Digital Circuits and Patch Panel Configurations ............ 2-6
2-19
Wideband Circuits and Patch Panel ................................................................. 2-12
2-47
Test Equipment and Miscellaneous Internal Subsystems ................................. 2-15
2-48
STATION OPERATIONS
Operation Practices and Methods .................................................................... 3-1
3-1
Patching Operations ........................................................................................ 3-5
3-2
Troubleshooting ............................................................................................... 3-9
3-8
Implementation of Communications Services Requirements ............................ 3-15
3-13
Quality Control Testing .................................................................................... 3-19
3-14
MAINTENANCE
Organizational Maintenance, General .............................................................. 4-1
4-1
Preventive Maintenance Procedures ................................................................ 4-3
4-1
Building and Changing Circuits ........................................................................ 4-10
4-3
Troubleshooting Permanently Connected Circuits and Equipment .................... 4-13
4-5
FUNCTIONING OF ALARM EQUIPMENT ....................................................... 5-1
5-1
RE FERENCES .........................................................................................................................A-1
ABBREVIATIONS ......................................................................................................................B-1
Not applicable
Illus
Page
Figure
ORGANIZATIONAL, DIRECT SUPPORT, AND GENERAL SUPPORT
MAINTENANCE REPAIR PARTS AND SPECIAL TOOLS LISTS .................... D-1
Introduction ...................................................................................................... D-1
Repair Parts List .............................................................................................. D-5
Patch Panel Assembly, 2/Wire Audio ............................................................... D-5
D-1
Patch Panel Assembly, Interbay ....................................................................... D-7
D-2
Patch Panel, Misc, 10 Lamp GP3 .................................................................... D-9
D-3
Patch Panel Assembly, Interbay, 48 Lines with 48 Lamps ................................ D-11
D-4
Twinax Wideband Patch Panel Assembly ........................................................ D-15
D-5
0501 Assembly, Jack Twinterm 20T and 20M .................................................. D-17
D-6
i
TM 11-5895-878-14&P
Group
06
07
08
09
10
11
12
13
14
15
16
17
18
19
Section III.
IV.
Page
Universal DC Patch Panel Assembly ............................................................... D-21
Panel, Alarm - Major/Minor .............................................................................. D-23
Assembly, Universal Alarm Panel, LBAD-D-54393.2 ........................................ D-27
Assembly, Universal Alarm Panel, LBAD-D-54393-3 ........................................ D-28
Relay Board Assembly, LBAD-D-54398-2 ........................................................ D-31
Relay Board Assembly, LBAD-D-54398-1 ......................................................... D-31
Assembly, Audible Alarm Panel ........................................................................ D-33
Meter Panel Assembly, 0 ±15VDC .................................................................... D-35
Meter Panel Assembly ±150VDC ...................................................................... D-37
Meter Panel Assembly 24VDC .......................................................................... D-39
Meter Panel Assembly ±6VDC .......................................................................... D-39
Connectorized Circuit Concentration Panel Assembly ...................................... D-41
Panel Dual Speaker ......................................................................................... D-43
1801 Amplifier 5 Watt ...................................................................................... D-45
Alarm Panel Assembly, CAU/CCU ................................................................... D-47
1901 Alarm Panel P.C.B. Assembly .................................................................. D-49
Special Tools List (Not applicable)
National Stock Number and Part Number Index ............................................... .D-50
Illus
Figure
D-7
D-8
D-9
D-9
D-10
D-10
D-11
D-12
D-13
D-14
D-14
D-15
D-16
D-17
D-18
D-19
List of Illustrations
Number
Title
Page
1-1
Typical Pentagon TCF Users ........................................................................................................................ .1-2
1-2
Black: VF Patch Bays 1.2 Through 1.4 and Test Bay 1.5, Equipment Locations ............................................ 1-5
1-3
Black VF Patch Bays 1.6 and 1.7, Video Monitor Bay 1.8 and Station Clock Bay 1.9, Equipment Locations .. 1-6
1-4
Black Digital IDF Bay 1.10 and Patch Bays 1.11 Through 1.13, Equipment Locations ................................... 1-7
1-5
Black: Digital Test Bay 1.14 and Patch Bays 1.15 and 1.16, Equipment Locations ....................................... .1-8
1-6
Black: Digital Patch Bay 1.17 and Test Bay 1.18, Equipment Locations ...................................................... . 1-9
1-7
Black: Digital Patch Bays 1.19, 1.20, and 1.21, Equipment Locations ......................................................... 1-10
1-8
Red S.I. Bay 2.1 and Digital Test Bay 2.2, Equipment Locations ................................................................. 1-11
1-9
Red Digital Patch Bays 2.3, 2.4, and 2.5, Equipment Locations .................................................................. 1-12
1-10
Red Digital Patch Bays 2.6 and 2.8 and Digital Test Bay 2.7, Equipment Locations.................................... .1-13
1-11
Red Digital Patch Bays 2.10, 2.11, and 2.13 and Digital Test Bay 2.12, Equipment Locations ................... .1-14
1-12
Red Digital Patch Bays 2.14, 2.15, and 2.16, Equipment Locations ............................................................ 1-15
1-13
Red Power Supply Bay 2.17 and Video Monitor Bay 2.18, Equipment Locations ........................................ .1-16
1-14
Red V/F Patch Bay 2.19, Test Bay 2.20, and IDF Bay 2.21, Equipment Locations ...................................... 1-17
1-15
Quality Assurance Test Center, Equipment Locations.................................................................................. 1-18
2-1
Typical IDF Bay, Front View ......................................................................................................................... 2-2
2-2
Connectorized Cross-Connect Panel, Module Wiring Diagram ..................................................................... .2-3
2-3
Black VF, IDF Bays, Front View ................................................................................................................... .2-4
2-4
Black VF, IDF Panels 1 Through 8, Cable Details ........................................................................................ .2-5
2-5
Black VF, IDF Panels 9 Through 16, Cable Details ...................................................................................... .2-6
2-6
Black Digital IDF Bays, Front View .............................................................................................................. .2-7
2-7
Black Digital IDF Panels 1 Through 8, Cable Details .................................................................................... .2-8
2-8
Black Digital IDF Panels 9 Through 16, Cable Details .................................................................................. .2-9
2-9
Black Digital IDF Panels 17 Through 24, Cable Details .............................................................................. .2-10
2-10
Red Digital and VF IDF Bays, Front View ................................................................................................... 2-11
2-11
Red Digital and VF IDF Panels 1 Through 8, Cable Details ......................................................................... 2-12
2-12
Red Digital and VF IDF Panels 9 Through 16, Cable Details ....................................................................... 2-13
2-13
Red Digital and VF IDF Panels 17 Through 24, Cable Details .................................................................... .2-14
2-14
Red Digital and VF IDF Panels 25 Through 32, Cable Details .................................................................... .2-15
2-15
Special Intelligence Bay IDF, Front View ................................................................................................... .2-16
2-16
VF Patch Panel, Front View ....................................................................................................................... .2-18
2-17
Digital Line Isolators, Wiring Diagram ........................................................................................................ .2-20
2-18
Universal Digital Patch Panel, Front View .................................................................................................. .2-21
2-19
Universal Digital Patch Panel Bay, Rear View ............................................................................................ 2-22
2-20
Universal Digital Patch Panel, Red Receive Circuit, Schematic Diagram .................................................... 2-25
2-21
Universal Digital Patch Panel, Red Send Circuit, Schematic Diagram ......................................................... 2-26
2-22
Universal Digital Patch Panel, Red Control Circuit, Schematic Diagram .................................................... .2-27
2-23
Universal Digital Patch Panel, Black Send Circuit, Schematic Diagram ...................................................... 2-29
2-24
Universal Digital Patch Panel, Black Receive Circuit, Schematic Diagram ................................................. 2-30
2-25
Universal Digital Patch Panel, High Level Send Circuit, Schematic Diagram ............................................... 2-31
2-26
Universal Digital Patch Panel, High Level Receive Circuit, Schematic Diagram .......................................... 2-33
2-27
Universal Digital Patch Panel, Low Level Send Circuit (with Timing from an External Standard to Both
Sender and Data Receiver),Schematic Diagram ......................................................................................... 2-34
ii
TM 11-5895-878-14&P
Number
2-28
2-29
2-30
2-31
2-32
2-33
2-34
2-35
2-36
2-37
2-38
2-39
2-40
2-41
2-42
2-43
2-44
2-45
2-46
3-1
3-2
3-3
4-1
4-2
4-3
4-4
FO-1
FO-2(1)
FO-2(2)
FO-3
FO-4
FO-5
FO-6
FO-7
FO-8
FO-9
Title
Page
Universal Digital Patch Panel, Low Level Send Circuit (with Timing from Data Receiver to
Data Sender), Schematic Diagram ....................................................................................................... 2-35
Universal Digital Patch Panel, Low Level Send Circuit (with Timing from Data Sender to
Data Receiver), Schematic Diagram .................................................................................................... 2-37
Universal Digital Patch Panel, Low Level Receive Circuit (with Timing from Data Sender to
Data Receiver), Schematic Diagram .................................................................................................... 2-38
Universal Digital Patch Panel, Low Level +6VDC Send Circuit, Schematic Diagram ............................ 2-39
Universal Digital Patch Panel, Low Level +6VDC Receive Circuit, Schematic Diagram ........................ 2-41
Universal Digital Patch Panel, Low Level Balanced (+3VDC and -3VDC) Send Circuit, Schematic
Diagram .............................................................................................................................................. .2-42
Universal Digital Patch Panel, Low Level Balanced (+3VDC and -3VDC) Receive Circuit, Schematic
Diagram ............................................................................................................................................... 2-43
Universal Digital Patch Panel, Black Send Circuit (Modified Less Clock), Schematic Diagram ............. 2-45
Universal Digital Patch Panel, Black/Red Receive Circuit, Schematic Diagram .................................... 2-46
Wide Band Patch Panel, Front View ..................................................................................................... 2-47
Wide Band Patch Panel, Schematic Diagram ....................................................................................... 2-48
Quality Assurance Test Center, Equipment Connection Panel, Front View .......................................... .2-51
Quality Assurance Test Center, Equipment Connection Panel, Front View ............................................ 2-52
Typical Miscellaneous Patch Panel with 48 Lamps, Front View ............................................................ 2-54
Dc Interbay Patch Panel with 48 Lamps, Schematic Diagram ............................................................... 2-55
Voice Frequency Interbay Patch Panel, Schematic Diagram ................................................................ 2-56
Dc Power Systems, Block Diagram ...................................................................................................... 2-60
Alarm Systems, Block Diagram ........................................................................................................... .2-62
Miscellaneous Patch Panel With 10 Lamps, Schematic Diagram .......................................................... 2-63
Transfer of Circuit to Spare Channel ...................................................................................................... 3-5
Transfer of Circuit to Spare Cable Pair ................................................................................................... 3-6
Substitution of Equipment ....................................................................................................................... 3-7
Major-Minor Alarm System, Schematic Diagram .................................................................................... 4-7
Universal Alarm Panel, Schematic Diagram ........................................................................................... 4-9
CAU/CCU Alarm Panel, Schematic Diagram ........................................................................................ 4-11
Audible Alarm Panel, Schematic Diagram ............................................................................................. 4-13
Patch and Test Section of the Technical Control Facility, Floor Plan ..........................................................*
PTC Circuit Routing Diagram (part 1 of 2) ................................................................................................. *
PTC Circuit Routing Diagram (part 2 of 2) ................................................................................................. *
Typical Voice Frequency Circuit Diagram ...................................................................................................*
Voice Frequency Patch Panel, Schematic Diagram ................................................................................... *
Typical Black Digital Circuit IDF Connection Diagram ................................................................................*
Typical Red Digital Circuit Diagram ........................................................................................................... *
Universal Digital Patch Panel, Schematic Diagram .....................................................................................*
Typical Wide Band Circuit Diagram ............................................................................................................*
PTC Grounding System Diagram .............................................................................................................. *
* Fold-in pages located in back of manual.
iii
TM 11-5895-878-14&P
CHAPTER 1
INTRODUCTION
Section I. GENERAL
maintenance levels are listed in and prescribed by TM
38-750.
b. Report of Packaging and Handling Deficiencies.
Fill out and forward DD Form 6 (Packaging
Improvement Report) as prescribed in AR 70058/NAVSUPINST 4030.29/AFR 71-13/MCO P4030.29A,
and DLAR 4145.8.
c. Discrepancy in Shipment Record (DISREP) (SF
361). Fill out and forward Discrepancy in Shipment
Record (DISREP) (SF 361) as prescribed in AR 5538/NAVSUPINST
4610.33B/AFR
75-18/MCO
P4610.19C and DLAR 4500.15.
d. Station Operation and Maintenance. Also use
forms and records in accordance with instructions in the
station Standard Operating Procedures (SOP).
1-1. Scope
a. This manual describes the patch and test facility
(P&T) of the technical control facility (TCF) at the
Pentagon, Washington, DC. Included are description
and data; station application and equipment function;
station operation; and maintenance instructions.
b. Publications that cover individual equipment
and systems used with the P&T are listed in appendix A.
Appendix B defines abbreviations used in this technical
manual; appendix C provides a listing of P&T
components; and appendix D is a site repair parts
listing.
1-2. Indexes of Publications
a. DA Pam 310-4. Refer to the latest issue of DA
Pam 310-4 to determine whether there are new editions,
changes or additional publications pertaining to the
equipment.
b. DA Pam 310-7. Refer to DA Pam 310-7 to
determine whether there are modification work orders
(MWO's) pertaining to the equipment.
1-4. Administrative Storage
This P&T is expected to be incontinuous operation.
Therefore, procedures, forms and records, and
inspections required during periods of administrative
storage are not applicable.
1-5. Destruction of Army Materiel
Destruction of Army materiel to prevent enemy use shall
be as prescribed in TM 750-244-2.
1-3. Forms and Records
a. Reports of Maintenance and Unsatisfactory
Equipment. Maintenance forms, records, and reports
which are to be used by maintenance personnel at all
Section II. DESCRIPTION AND DATA
Access is provided to both the black (encrypted) and the
red (clear) sides of the circuits.
1-6. Purpose and Use
a. The Pentagon technical control facility is the
main Army TCF serving the Washington DC area. The
facility provides many high priority circuits to and from
various local government users to locations scattered
throughout the free world and to the Kremlin. Users and
connecting sites often change. Typical Pentagon users
are shown in figure 1-1.
b. The patch and test facilities of the TCF provide
access to each circuit for monitoring, rerouting, and
testing.
1-7. Tabulated Data
NOTE
See individual technical manuals
(appendix
A)
for
technical
characteristics of installed facility
components.
1-1
TM 11-5895-878-14&P
Figure 1-1. Typical Pentagon TCF Users.
a. VF Patching Facilities:
Red VF Jack Appearances (2-wire) ................264 ea
Black VF Jack Appearances (2-wire) ..............960 ea
Nominal Test Tone Signal Level ....................-2 dbm
Nominal Circuit Impedance ............................600 ohms
Normal Send Signal Level ..............................+8 dbm
Normal Receive Signal Level .........................-13 dbm
b. DC Patching Facilities:
Red DC Jack Sets ..........................................912 ea
Black DC Jack Sets ........................................1,296 ea
Nominal Signal Level .....................................±6 vdc
c. Video Patching Facilities:
Red Video Jack Appearances..........................160 ea
Black Video Jack Appearances ........................100 ea
Nominal Circuit Impedance .............................75 ohms
d. AC Power Requirements:
208/120 vac, 3 phase, 60 Hz.
e. DC Power Supplies:
6 VDC .......................................... 4 ea: 2 Red, 2 Black
24 VDC ........................................ .4 ea: 2 Red, 2 Black
48 VDC ....................................... .4 ea: 2 Red, 2 Black
1-2
TM 11-5895-878-14&P
1-8. Facility Components
The P&T components are listed in paragraph 1-13 by
major assemblies.
The test equipment listed and
discussed through this manual may be changed as
required by the P&T mission or due to the availability of
new equipment. The list includes all permanently wired
components and the number of plug-in items that may
be mounted in associated shelves.
with a push-button switch for unlocking the door is below
the monitors. There are five TWINAX wide band patch
panels in the bay. The remainder of the bay is used to
mount test equipment. Bay 1.9 is a TDS-2 Station
Clock Bay.
f. Black Digital Patch Bays (figs. 1-4 through 1-7).
Bays 1.11, 1.12, 1.13, 1.15, 1.16, 1.17, 1.19, 1.20, and
1.21 are the black digital patch bays. Each bay has a i
15 vdc meter mounted in a panel at the top. There are
six universal digital patch panels and a INT panel with
48 lamps in each bay. The bottom bay 1.11 mounts the
black -48 vdc power system; consisting of two 48 vdc
power supplies, an alarm panel, and a fused power
distribution panel. Bays 1.12 and 1.19 each contain an
order-wire panel. Bays 1.13 and 1.15 have writing
shelves with AN/FGG-80 teletypewriter sets mounted on
the shelves. One 24 vdc power supply is in bay 1.16
with a second unit in bay 1.17. Bay 1.16 contains the 24
vdc meter panel, alarm panel and fused power
distribution panel. Bay 1.17 also contains the black 6
vdc power system; consisting of two power supplies
(with alarms), meter panel, and fused power distribution
panel.
Bay 1.21 includes the black indicating
equipment; consisting of a MAJOR/MINOR alarm panel,
audible alarm panel and two crypto ancillary
unit/common control unit (CAU/CCU) alarm panels.
g. Black Digital Test Bays (figs. 1-5 and 1-6). Bays
1.14 and 1.18 are the black digital test bays. The bays
are similar in configuration. Each bay contains a ±150
vdc meter panel, a 601 Data Transmission Test Set,
HP180BR Oscilloscope with connection panel,
AN/GGM-15 (V) Telegraph Test Set, INT panel with 48
lamps, and a writing shelf.
1-9. General Description of P&T
a. The Patch and Test facilities of the TCF was
installed in accordance with Lexington-Blue Grass Army
Depot drawing list DL-54260. The equipment is housed
in two different rooms. All of the P&T components
(except the quality assurance (QA) equipment) are
located in TCF, room 5A910 (fig. FO-1). There are
three bays of QA equipment in the Electronic
Maintenance Room (para 1-12).
b. As shown in figure FO- 1, the P&T of the TCF
consists of two rows of equipment bays, a red cable
vault, and red and black ground and power distribution
boxes. In addition the room contains Crypto equipment,
modems, voice frequency carrier telegraph (VFCT)
equipment, etc. Equipment rows No. 1 and No. 2 are
described in paragraphs 1-10 and 1-11.
1-10. Description of Equipment Row No. 1
a. General. Equipment row No. 1 contains 21 bays
of P&T equipment and four bays of DCL/MOLINK
equipment. Bays 1.22 through 1.24 (DCL/MOLINK) are
covered in (C) PDEP 11-5895-832-14(2). Row No.1 is
called the black equipment row, because bays 1.1
through 1.21 connect to unsecure or encrypted circuits.
b. Black VF and Digital IDF Bays. Bay 1.1 consists
of two intermediate distribution frame (IDF) bays. Bay
1.10 consists of three IDF bays. Each bay contains a
front door to allow access to a patch cord type cross
connect matrix. The IDF's are similar and discussed in
chapter 2.
c. Black VF Patch Bays (figs. 1-2 and 1-3). Bays
1.2, 1.3, 1.4, 1.6, and 1.7 are the VF patch bays. Each
of these contains eight 2-wire audio patch panels and an
interbay patch (INT) panel. Bay 1.2 has an R-390 radio
receiver in the bay below the patch panels. Bays 1.3
and 1.7 each have a 60-station voice order wire panel,
that are furnished and maintained by the telephone
company. Bays 1.4 and 1.6 have dual speaker panels
and AM-911/FG audio frequency amplifiers mounted
below the patch panels.
d. Black VF Test Bay 1.5 (fig. 1-2). This bay
contains various test equipment as shown in figure 1-2.
There is a writing shelf with a miscellaneous (MISC) and
INT panel above the shelf. In addition there are two test
equipment connection panels. Test equipment without
rear test lead connectors are connected to the MISC
panel through the test equipment connection panels.
e. Video Monitor and Station Clock Bays 1.8 and
1.9 (fig. 1-3). Bay 1.8 has two video monitors at the top,
used to monitor the TCF door and outside hall. A panel
1-11. Description of Equipment Row No. 2
a. General. Equipment row No. 2 contains 20 bays
of equipment and four bays of IDF patch cord cross
connect matrixes (fig. FO- 1). The four IDF bays are all
numbered 2.21 and described in chapter 2. Row No. 2
is called the red equipment row, because the circuits
may carry secure information in clear text. Bays 2.1
through 2.20 are described in b through f below.
b. Special Intelligence Bay 2.1 (fig. 1-8). SI bay
2.1 is isolated from the rest of the P&T facility. The bay
contains a color video monitor at the top with eight video
distribution amplifiers, and three 75 ohms patch panels.
Between the monitor and amplifiers there are two
universal dc patch panels (digital patch panels) and
three 2-wire audio patch panels (VF patch panels). The
bay also has its own IDF consisting of two rows of patch
cord cross connect matrixes.
c. Red Digital Patch Bays (figs. 1-9 through 1-12).
The red digital patch bays are 2.3 through 2.6, 2.8
through 2.11 and 2.13 through 2.16. Each of these bays
has a ±15 vdc meter mounted in a panel at the top of
the bay. Below the meter panel there are six digital
patch panels and a INT panel with 48 lamps. Bays 2.11,
2.13,
1-3
TM 11-5895-878-14&P
MAJOR/MINOR alarm panel along with an associated
audible alarm panel. Video monitor bay 2.18 has a
monitor unit at the top with eight video distribution
amplifiers and a 1485R video waveform monitor below
the monitor unit. There are five 75-ohm video patch
panels in the bay along with an INT panel. The INT
panel has six jacks that are connected to the QA test
center (para 1-12).
f: Red VF Patch and Test Bays (fig. 1-14). Bay 2.19 is
the red vf patch panel. This panel contains eight 2-wire
audio patch panels and an INT panel. The red vf test
bay (2.20) contains an INT panel and a MISC panel.
Test equipment is mounted above the INT panel as
shown in figure 1-14. A writing shelf is below the MISC
panel and the station clock dual digital line isolators are
below the writing shelf.
and 2.14 each contain a writing shelf used to mount
AN/FGC-80 teletypewriter sets. Each bay has blank
panels below the patch panel. The blank panels may be
removed to allow installation of equipment as required.
d. Red Digital Test Bays (figs. 1-8, 1-10, and 1-12).
Bays 2.2, 2.7, and 2.12 are the red digital test bays.
Each of these test bays is used to mount test and
monitor equipment as shown in figures 1-8, 1-10, and 112. In addition, there is an INT panel with 48 lamps and
a writing shelf in each bay.
e. Red Power and Video Monitor Bays (fig. 1-13).
Bay 2.17 mounts six dc power supplies (two 48 volt, two
24 volt and two 6 volt), along with associated fused
distribution panels and alarm panels. The 6 vdc and 24
vdc supplies do not contain current and volt meters.
Therefore, a meter panel is provided to measure the
output of these supplies. At the top of this bay there is a
1-4
TM 11-5895-878-14&P
Figure 1-2. Black VF Patch Bays 1.2 Through 1.4 and Test Bay 1.5, Equipment Locations.
1-5
TM 11-5895-878-14&P
Figure 1-3. Black VF Patch Bays 1.6 and 1. 7, Video Monitor Bay 1.8 and Station Clock Bay 1.9,
Equipment Locations.
1-6
TM 11-5895-878-14&P
Figure 1-4. Black Digital IDF Bay 1.10 and Patch Bays 1.11 Through 1.13, Equipment Locations.
1-7
TM 11-5895-878-14&P
Figure 1-5. Black Digital Test Bay 1.4 and Patch Bays 1.15 and 1.16, Equipment Locations.
1-8
TM 11-5895-878-14&P
Figure 1-6. Black Digital Patch Bay 1.17 and Test Bay 1.18, Equipment Locations.
1-9
TM 11-5895-878-14&P
Figure 1-7. Black Digital Patch Bays 1.19, 1.20, and 1.21, Equipment Locations.
1-10
TM 11-5895-878-14&P
Figure 1-8. Red S.I. Bay 2.1 and Digital Test Bay 2.2, Equipment Locations.
1-11
TM 11-5895-878-14&P
Figure 1-9. Red Digital Patch Bays 2.3, 2.4, and 2.5, Equipment Locations.
1-12
TM 11-5895-878-14&P
Figure 1-10. Red Digital Patch Bays 2.6 and 2.8 and Digital Test Bay 2.7, Equipment Locations.
1-13
TM 11-5895-878-14&P
Figure 1-11. Red Digital Patch Bays 2.10, 2.11, and 2.13 and Digital Test Bay 2.12, Equipment Locations.
1-14
TM 11-5895-878-14&P
Figure 1-12. Red Digital Patch Bays 2.14, 2.15, and 2.16, Equipment Locations.
1-15
TM 11-5895-878-14&P
Figure 1-13. Red Power Supply Bay 2.17 and Video Monitor Bay 2.18, Equipment Locations.
1-16
TM 11-5895-878-14&P
Figure 1-14. Red VF Patch Bay 2.19, Test Bay 2.20, and IDF Bay
2.21, Equipment Locations.
1-17
TM 11-5895-878-14&P
Figure 1-15. Quality Assurance Test Center, Equipment Locations.
1-18
TM 11-5895-878-14&P
circuits are connected to the QA test center through the
black INT panel in bay 3.
1-12. Description of Quality.-Assurance Test Center
(fig. 1-15)
The QA test center consists of three bays located in the
Electronic maintenance room. The bays contain test
equipment and panels as shown in figure 1-15. The test
enter is connected to red circuits in the P&T through the
RED TRIAX 75 ohm INT TRUNK in bay 2. Black P&T
NSN/Part Number
LBAD-D-54374-1
LBAD-D-54374-2
LBAD-D-54374-3
LBAD-D-33674
LBAD-D-33679
LBAD-D-33700
LBAD-D-33684-3
LBAD-D-33440-3
LBAD-D-52178
LBAD-D-33161
LBAD-D-54393-2
LBAD-D-52158
LBAD-D-54393-3
LBAD-D-52170-5
LBAD-D-54327
5805-00-103-7136/
676D
LBAD-D-52731
# 218217
DCR 60-30
FP 40
FP 40
FP 40
LBAD-D-52170-1
281048
26 C
LBAD-D-52721
230-1858-01
LBAD-D-59292
5815-00-941-0063
5805-00-503-0914
3206-A1
5521RS12
TCTS-2A
TDS-2
97170004-00
COA-3C
87170000-000
8717001-000
Mark IV
TEK 1485R
TEK 655-1
6625-00-167-9861/
HP4800
HLI-48
TEK-R-7623
6625-00-140-7389/
TTS-58-AR
1-13. List of TCF Components
Table 1-1 is a listing of components installed in the
Technical Control, Patch and Test Facility, Pentagon,
Washington, DC:
Table 1-1. List of TCF Components
Item Description
Qty
Fig. No.
Rack assembly - EMCORE 127
Rack assembly - EMCORE 127
Rack assembly - EMCORE 127
Patch panel assembly - 2 wire audio
Patch panel assembly - interbay
Patch panel assembly - interbay w/48 lamps
Patch panel assembly - miscellaneous
Patch panel assembly - twinax w/b 75-ohm
Patch panel assembly - universal dc xmit/rec
Panel, major/minor
Alarm panel assembly, universal 48VDC
Alarm panel, audible
Alarm panel, 24VDC
Meter panel, 24VDC
Panel, speaker, dual, Engineering Devices, Lexington, Kentucky
Alarm panel assembly, CAU/CCU
Power supply - 6 VDC/PP-6062/G
9
25
2
52
8
27
4
12
128
2
2
2
2
2
4
2
4
1-2
1-2
1-4
1-2
1-3
1-4
1-7
1-4
1-7
1-5
1-13
1-2
1-7
1-6
Meter panel, volt & amp - PORM 0-150
Power supply - 24 VDC
Power supply - 48 VDC
Panel, distribution - 6 VDC
Panel, distribution - 24 VDC
Panel, distribution - 48 VDC
Meter panel - 6 VDC
Power supply - 48 VDC
MODEM
Intertrunk panel, 75-ohm Triax
Meter panel - FORM 15 VDC
Panel, connectorized crossconnect
Outlet, convenience ac
Teletypewriter - AN/FGC-80
VF Orderwire; 400 key, 60-button consol. Chesapeake-Potomac Telephone Co.
Amplifier, audio frequency - AM-911/FG
Amplifier, video distribution
Panel, attenuator
Monitor, video (control), monitor switches, outside & door release
Telegraph carrier test set
Station clock c/o
Power supply
Clock oscillator
Comparator & switch assembly
Divider assembly
Output assembly
Fans: 50/60 Hz, 115 VAC
Monitor, Waveform Dual Standard PAL/NTSC
Video Monitor
Vector Impedance Meter
Meter, Phase Jitter, Heklimian Laboratories Inc., Rockville, Maryland
Oscilloscope, Storage
Counter, Impulse Noise
1-19
3
3
4
2
2
2
2
1
1
1
21
74
38
6
3
2
16
1
3
1
1
1
3
1
1
5
2
2
2
1
1-6
1-5
1-4
1-6
1-5
1-4
1-6
1-15
1-15
1-15
1-4
2-1
1
1
1
1-15
1-15
1-15
1-3
1-2
1-2
1-8
1-2
1-3
1-2
1-3
1-3
1-3
1-3
1-3
1-3
1-3
1-3
1-8
1-15
TM 11-5895-878-14&P
Table 1-1. List of TCF Components-Continued
Item Description
NSN/Part Number
6625-00-411-9620/
HP 5050B
6625-00-799-8539/
HP 334A
HP3490A
6625-00-973-4837/
HP 5245L
6625-00463-(042
6625-00-464-2957
S-9903D
490B
6625-00-409-4572/
HP 302A
HP 183 BR
HP 180 D
6625-00-740-0344/
HP 3550
269
#601
6625-00-464-1702
152-10 (2 ft long)
152-10 (3 ft long)
5995-00-935-5135/
PJ-82 (2 ft)
5995-00-089-4500/
PJ-84 (4 ft)
5995-00-246-9792/
PJ-86 (6 ft)
230-1754-010
230-1754-020
230-1754-030
230-1754-040
230-1754-050
230-1754-060
230-1754-070
230-1753-010
230-1753-020
230-1753-030
230-1753-040
230-1753-050
230-1753-060
230-1753-070
230-1752-010
230-1752-020
230-1752-030
230-1752-040
230-1752-050
230-1752-060
230-1752-070
230-1751-010
230-1751-020
230-1751-030
230-1751-040
230-1751-050
230-1751-060
230-1751-070
Qty
Fig. No.
Recorder, Digital
1
1-15
Analyzer, Distortion, TS-2947
1
1-15
Multimeter, Digital
Counter, Frequency
1
1
1-15
1-15
Plotter, X-Y, RO-437/U
Recorder, Dual Channel, RO-460(V) I1/U
Speaker panel, Communications Electronic Inc. (CEI)
Panel, equipment connection
Measuring Set, Envelope Delay
Voltmeter, Frequency Selective, TS-1827(#)/U
1
1
1
1
1
1
1-15
1-15
1-15
1-15
1-15
1-15
Oscilloscope
Oscilloscope
Transmission Measuring Set
2
5
4
1-2
1-5
1-2
Digital Multimeter
Data Transmission Test Set
Analyzer, Digital Data AN/GGM-15(V)
Patchcord, twinax
Patchcord, twinax
Patchcord
3
6
5
30
30
200
1-2
1-5
1-5
Patchcord
200
Patchcord
200
Patchcord (orange)
Patchcord (red)
Patchcord (pastel blue)
Patchcord (yellow)
Patchcord green)
Patchcord (tan)
Patchcord (moss green)
Patchcord (orange)
Patchcord (red)
Patchcord (pastel blue)
Patchcord (yellow)
Patchcord (green)
Patchcord (tan)
Patchcord (moss green)
Patchcord (orange)
Patchcord (red)
Patchcord (pastel blue)
Patchcord mellow)
Patchcord (green)
Patchcord (tan)
Patchcord (moss green)
Patchcord (orange)
Patchcord (red)
Patchcord (pastel blue)
Patchcord (yellow)
Patchcord (green)
Patchcord (tan)
Patchcord (moss green)
150
150
200
200
200
200
200
100
100
100
100
100
100
100
200
200
200
200
200
200
200
75
75
75
75
75
75
75
1-20
TM 11-5895-878-14&P
CHAPTER 2
STATION APPLICATION AND EQUIPMENT FUNCTION
Section I. STATION APPLICATION
capabilities, typical circuits in and through the TCF and
the functions of equipment. Refer to DCS publications
to become familiar with other types of communication
circuits and links.
2-1. Introduction
(fig. FO-2(1) and FO-2(2))
a. Pentagon Telecommunications Center. The US
Army Communications Command (USACC) Pentagon
Telecommunications Center (ITC) is a terminal station
that provides a transmission system interface with the
Defense Communications Systems (DCS) for Army,
Department of Defense, and other Government
agencies located at the Pentagon and surrounding areas
near Washington DC. The PTC provides various users
with high priority voice, data, and video service, most of
which is encrypted. The transmission media utilized are
military-owned
microwave,
commercial-owned
baseband radio, and commercial cable. In addition, a
large number of "in-house" cables are used to provide
connectivity for the user locations throughout the
Pentagon building complex.
b. Technical Control Facility. The Army Technical
Control Facility (TCF) at the Pentagon provides
technical control over RED and BLACK-VF, DC,
DIGITAL, and VIDEO circuits appearing at the TCF.
These are comprised of military-owned VRCT systems
and leased DC and data circuits. The high speed data
circuits are in the !400 to 50K BAUD range. The low
speed circuits are pre/dominantly secure circuits. Test
and maintenance is also provided on Governmentowned lines and circuits.
2-3. Intermediate Distribution Frames
a. General. There are four IDF's in the P&T area.
They are an integral part of the technical control. As
shown in figures FO-2.1 and FO-2.2 each equipment's
signaling input and output connections are terminated at
an IDF. In addition, the input and output signals of each
patch panel and circuit line are also terminated at an
IDF. (Wide band circuits are not connected through
IDF's.)
b. Description. Each IDF (fig. 2-1) consists of a
matrix made up of rows of cross-connect panels. A
panel contains ten jack type patch modules (A through
H, and J and K). Each module (fig. 2-2) has six
multicolored rows of 26 jacks. The color of the jack
rows at the front of the modules, from left to right are:
Red (A), white (B), blue (C), yellow (D), black (E), and
orange (F). Each of the 156 jacks is connected to a pin
on one of three associated connectors mounted on the
rear of the panel. The first 48 jacks on the module are
connected to pins 1 through 48 on connector J1.
Module jacks 49 through 96 are connected to pins 1
through 48 on connector J2. Module jacks 97 through
144 are connected to pins 1 through 48 on connector J3.
Module jacks 145 through 156 are also connected to
connectors J1, J2, and J3.
Four jacks to each
connector. The connectors are cabled to patch panels,
land lines, and equipment. Circuits are built by crossconnecting between the jacks of the circuit component
modules with cross-connect patch cords.
c. Black VFIDF, Bay 1.1. Bay 1.1 (fig. 2-3) is
actually two bays. Each bay contains eight crossconnect panels (b above). Cable details (at the time of
installation) are shown in figures 2-4 and 2-5.
d. Black Digital IDF, Bay 1.10. Bay 1.10 (fig. 2-6)
consists of three bays of eight cross-connect panels (b
above). Cable details (at the time of installation) are
shown in figures 2-7, 2-8, and 2-9.
e. Red Digital and VF IDF, Bay 2.21. Bay 2.21
(fig. 2-10) consists of four bays of eight cross-connect
panels (b above).
Cable details (at the time of
installation) are shown in figures 2-11 through 2-14.
f. Special Intelligence IDF, Bay 2.1. There are two
cross-connect panels (fig. 2-15) at the bottom of the S.I.
bay.
2-2. Patch and Test Facility
a. The P&T function includes the monitoring of
circuits and equipment within a station, as well as the
selection and application of station facilities and
associated equipment, as needed to keep the station's
operating and standby communications links and circuits
at peak efficiency. The technical controller coordinates
changes in communications services at the station,
performs alternate routings, directs the correction of
malfunctions, restores service when outages occur, and
coordinates link and station tests. The P&T facility
within the station encompasses these areas which are
equipped with jacks, and test instruments to provide
access to the circuits for the purpose of performing
monitor, patch and test operations.
b. To efficiently perform the technical control
functions required to keep all communication links at
their peak operating condition, all personnel must be
thoroughly familiar with the station capabilities and the
functions of all /equipment in the station. In addition,
familiarization with circuit links of related technical
controls is required. This chapter discusses the station
2-1
TM 11-5895-878-14&P
Figure 2-1. Typical IDF Bay, Front View.
2-2
TM 11-5895-878-14&P
Figure 2-2. Connectorized Cross-Connect Panel, Module Wiring Diagram.
2-3
TM 11-5895-878-14&P
Figure 2-3. Black VF, IDF Bays, Front View.
2-4
TM 11-5895-878-14&P
Figure 2-4. Black VF, IDF Panels 1 Through 8, Cable Details.
2-5
TM 11-5895-878-14&P
Figure 2-5. Black VF, IDF Panels 9 Through 16, Cable Details.
2-6
TM 11-5895-878-14&P
Figure 2-6. Black Digital IDF Bays, Front View.
2-7
TM 11-5895-878-14&P
Figure 2-7. Black Digital IDF Panels 1 Through 8, Cable Details.
2-8
TM 11-5895-878-14&P
Figure 2-8. Black Digital IDF Panels 9 Through 16, Cable Details.
2-9
TM 11-5895-878-14&P
Figure 2-9. Black Digital IDF Panels 17 Through 24, Cable Details.
2-10
TM 11-5895-878-14&P
Figure 2-10. Red Digital and VF IDF Bays, Front View.
2-11
TM 11-5895-878-14&P
Figure 2-11. Red Digital and VF IDF Panels 1 Through 8, Cable Details.
2-12
TM 11-5895-878-14&P
Figure 2-12. Red Digital and VF IDF Panels 9 Through 16, Cable Details.
2-13
TM 11-5895-878-14&P
Figure 2-13. Red Digital and VFIDF Panels 17 Through 24, Cable Details.
2-14
TM 11-5895-878-14&P
Figure 2-14. Red Digital and VF IDF Panels 25 Through 32, Cable Details.
2-15
TM 11-5895-878-14&P
Figure 2-15. Special Intelligence Bay IDF, Front View.
Section II. TYPICAL VF CIRCUIT AND PATCH PANEL
module A on panel 1. Jacks 1 and 2 of module A, panel
1 are cabled to the send side of the line vf equipment.
c. Receive Circuit. The receive circuit is similar to
the transmit circuit, except the signals travel in the
opposite direction. The REC FROM VF EQUIP line, at
the top of the diagram, is cabled to pins 3 and 4 of
module A on panel 1. The second row of six jacks (7
through 12) of module A, panel 4 are cabled to the No. 2
set of jacks (REC) of patch panel No. 1 in bay 1.7.
These jacks are normal through wired to provide a
complete circuit from jacks 1 and 2 to jacks 3 and 4 of
module A, panel 4. The receive side of the equipment
(SEND TO) pair is cabled from jacks 3 and 4 of module
A, panel 8 to the receive side of the equipment. To
connect this circuit two dual-plug cross-connect patch
cords are used at the IDF. One from jacks 3 and 4 of
module A, panel 1 to jack 1 and 2, row 2 of module A,
panel 4. The second cross-connect patch cord, is
connected from jacks 3 and 4, row 2, module A, panel 4
to jacks 3 and 4, row 1, module A, panel 8.
2-4. Typical VF Circuit Connections
(fig. FO-3)
a. General. The circuit is one that is typical to the
P&T at the Pentagon. The box in the top left hand
corner of the diagram represents line connections to the
telephone company or multiplex equipment. The box in
the lower left hand corner, represents the equipment
side of the circuit. The circuit is a two-way (transmit and
receive) four-wire communications circuit.
b. Transmit Circuit. The transmit circuit begins
with the cable pair from the equipment at the bottom of
the diagram. The RECEIVE FROM pair is connected to
pins 1 and 2 of connector J-1 on the rear of IDF panel 8
of bay 1.1. These two pins are connected to jacks 1 and
2 on cross-connect module A of panel 8. The pair for
RECEIVE FROM wires are cross-mounted from panel 8
to jacks 3 and 4 of module A on panel 4, with a dual
plug cross-connect patch cord. The first six jacks of
module A on panel 4 are wired to jack set No. 1
(TRANS) of patch panel No. 1 in bay 1.7 as shown in
the diagram. The equipment jacks are connected to
jacks 3 and 4 of crossconnect module A in panel 4 of
bay 1.1. The line jacks of the same patch. panel are
connected to jacks 1 and 2 of the same cross-connect
module. The EQUIP and LINE patch panel jacks are
wired normal-through (para 2-5).
This provides a
complete circuit from jacks 3 and 4 of module A panel 4
to jacks 1 and 2 of the same module. To complete the
circuit to the line equipment, a second cross-connect
dual plug,, 1 and 2 of patch cord is connected from
jacks 1 and 2 of module A, panel 4 to jacks 1 and 2 of
2-5. VF Patch Panel
a. General. The VF patch panels are LexingtonBlue Grass Army Depot (LBAD) D-33674 Two-Wire
Audio Patch Panels (fig. 2-16). Each patch panel has
24 sets of four jacks. One set of jacks is used to access
a two-wire circuit. When a four-wire circuit (transmit and
receive) is built, two sets of jacks are used. The
description in b below covers the use of the panel in a
four-wire circuit similar to that discussed in paragraph 24.
2-16
TM 11-5895-878-14&P
are normal-through wired to allow breaking of the circuit
for testing and rerouting it via patch cords. The top
allows the operation to be performed on the portion of
the circuit toward the incoming or outgoing line, while
the second row allows the operation to be performed on
the portion of the circuit toward the local equipment.
The jacks in rows 3 and 4 are parallel wired to monitor
the jacks in rows 1 and 2 respectively. These jacks do
not interfere with the circuit. The patch panels have two
cable connectors mounted on the rear of the panel and
are used to bring the transmit and receive circuit leads
from the IDF into the panel.
b. Description and Circuits. Each patch panel
contains 12 channels. Each channel occupies a paired
jackset (a jackset consists of 4 jacks arranged vertically)
of the panel as shown in the schematic diagram, figure
FO-4. The transmit circuit occupies the left jackset (odd
numbered jacks) in each paired jackset, and the receive
jackset occupies the right jackset (even numbered
jacks); therefore, the jacks should be alternately labeled
"TRANS" and "REC." The top row of jacks are labeled
"LINE" and are electrically toward the line or away from
the TCF equipment. The Second Row is labeled
"EQUIP" and is electrically toward the local equipment.
The top two rows,
2-17
TM 11-5895-878-14&P
Figure 2-16. VF Patch Panel, Front View.
2-18
TM 11-5895-878-14&P
Section III. TYPICAL BLACK AND RED DIGITAL CIRCUITS
AND PATCH PANEL CONFIGURATIONS
2-6. Digital Circuits, General
The P&T of the TCF provides cross-connection,
monitoring, testing, circuit patching access, and timing
clock for black and red digital circuits. Black and red
circuits are discussed in paragraphs 2-7 and 2-8. As shown
in figures FO-2.1 and FO-2.2, black and red circuits may be
connected back to back at the P&T to bring a channel.
through the TCF. Station timing clock isolation circuits are
discussed in paragraph 2-9.
All digital circuits are
connected through a Universal Digital Patch Panel. The
patch panel and its different configurations are discussed in
paragraphs 2-10 and 2-11.
2-7. Typical Black Digital Circuit
(fig. FO-5)
a. General. In this example of a black digital circuit,
the Universal Digital Patch Panel jack sets are
programmed with a group 4 module in the send circuit and
a group 5 module in the receive circuit. Refer to paragraph
2-11e and f for patch panel circuit details. This circuit is
crossconnected in IDF bay 1.10. The local equipment
(EQUIP side of circuit) is cabled to module A of panel 6.
The line equipment (LINE side of circuit) is cabled to
module A of panel 1. The jack sets of the Universal Digital
Patch Panel are cabled to module A of panel 2. Optional
devices are not used, but connections that could be used
are shown.
b. Send Circuit. To complete the send circuit, dualplug, cross-connect patch cords are installed as follows:
(1) Patch cord No. 4, from jacks 1 and 2, module
A, panel 6 to jacks 1 and 2, row 2, module A, panel 2. This
connects the transmit data output of the local equipment to
pin 5 of patch panel connector C- 1. This is the jack sets
tip (1) lead, which is normal-through wired to pin 1 (tipT) of
patch panel connector C-1. Pin 1 of C-1 is cabled to jack 1
of row 1 in module A, panel 2. The transmit data return is
also cross-connected with patch cord No. 4, and is
connected to a common tie point.
(2) Patch cord No. 1, between jacks 1 and 2, row
1, module A, panel 2 and pins 1 and 2, row 1, module A,
panel 1 completes the transmit data and transmit data
return to the line equipment.
(3) Patch cord No. 5, from jacks 3 and 4, row 1,
module A, panel 6 to jacks 3 and 4, row 2, module A, panel
2 connects the transmit clock through the R1 and R leads
of the patch panel jack set, to jacks 3 and 4, row 1, module
A, panel 2 of the IDF. The transmit clock return is also
connected to the common tie point through patch cord No.
5.
(4) Patch cord No. 2, from jacks 3 and 4, row 1,
module A, panel 2 to jacks 3 and 4, row 1, module A, panel
1 completes the transmit clock and transmit clock return to
2-19
the line equipment.
c. Receive Circuit.
To complete the receive
circuit, dual cross-connect patch cords are installed as
follows:
(1) Patch cord No. 7, from jacks 1 and 2, row
2, module A, panel 1 to jacks 1 and 2, row 3, module A,
panel 2 connects the receive data line to the tip () lead
of the patch panel receive jack set. The T lead is
normal-through connected to the T1 lead of the patch
panel jack set and cabled to jack 1, row 4, module A,
panel 2 of IDF. The same patch cord connects the
receive data return line to a common tie point and to
jack 2, row 4, module A, panel 2 of the IDF.
(2) Patch cord No. 10, from IDF jacks 1 and
2, row 4, module A, panel 2 to jacks 1 and 2, row 2,
module A, panel, 6 completes the receive data
connection from the patch panel jack set to the receive
pair of the local equipment.
(3) Patch cord No. 8, from jacks 3 and 4, row
2, module A, panel 1 to jacks 3 and 4, row 3, module A,
panel 2 connects the receive clock to the ring (R) lead of
the patch panel jack set. The R lead is normal-through
wired to the R1 lead of the jack set and cabled to jack 3,
row 4, module A, panel 2 of the IDF. The same patch
cord also connects the receive clock return to a
common tie point and to jack 4, row 4, module A, panel
2 of the IDF.
(4) Patch cord No. 11, from jacks 3 and 4,
row 4, module A, panel 2 to jacks 3 and 4, row 2,
module A, panel 6 completes the receive clock circuit to
the local equipment.
2-8. Typical Red Digital Circuit
(fig. FO-6)
a. General. In this circuit the equipment and three
patch panel jack sets in bay 2.10 are cabled to IDF bay
2.21. The line equipment is connected to module A of
panel 1. The patch panel jack sets are wired to module
A of panel 2. The local equipment is connected to
module A of panel 8. Refer to paragraph 2-11 b, c, and
d for patch panel circuit details. A red digital circuit is
connected similar to a black digital circuit (para 2-7)
except: (1) The circuit is located in equipment row 2 in
place of equipment row 1; (2) A control jack set (third
jack set) may be used when control functions are
required (b below); (3) The station clock must be
connected through a line isolation circuit (c below); (4)
Timing clock circuits are not used.
b. Control Circuit. To complete the data inhibit and
synchronize circuits, dual-plug cross-connect patch
cords are installed as follows:
(1) Patch cord No. 13, from jacks 3 and 4, row 2,
TM 11-5895-878-14&P
module A, panel 1 to jacks 1 and 2, row 5, module A,
panel 2 connects the data inhibit line to the T lead of the
patch panel control jack set. The T lead is connected
normal-through the jack sets tips to the T1 lead. The T1
lead is cabled to jack 1, row 6, of module A in panel 2.
The data inhibit return is completed to jack 2, row 6 of
module A in panel 2 by a common tie point connection.
(2) Patch cord No. 16, from jacks 1 and 2,
row 6, module A, panel 2 to jacks 3 and 4, row 2,
module A, panel 8 completes the data inhibit circuit to
the local equipment.
(3) Patch cord No. 17, from jacks 5 and 6,
row 2, module A, panel 8 to jacks 3 and 4, row 6,
module A, panel 2 connects the synchronize initiate lead
to the R1 lead of the patch panel jack set. The R1 lead
is connected normal-through jack sets rings to the R
lead. The R lead is cabled to jack 3, row 5 of module A
in panel 2. The synchronize initiate return is completed
to jack 4, row 5 of module A in panel 2 by a common tie
point connection.
(4) Patch cord No. 14, from jacks 3 and 4,
row 5, module A, panel 2 to jacks 5 and 6, row 2,
module A, panel 1 completes the synchronize initiate
circuit to the line equipment.
2-9. Station Clock Isolation Circuit
(fig. 2-17)
a. The station clock outputs are cabled to the black
IDF. When timing signals from the station clock must
be used in a red circuit, isolation between the red circuit
and the black IDF is required.
b. Isolation is accomplished by cross-connecting
the clock to a digital line isolator input module (located
in bay 2.20). The digital line isolators output module is
crossconnected to the red circuit at the red IDF.
c. One way optical coupling prevents anything
from being fed from the red circuit back to the station
clock.
2-10. Universal Digital Patch Panel
a. Description. The front of the patch panel (fig. 218) contains 24 sets of four jacks with a switch and lamp
that is associated with each jack set. There are three
rows of identification (ID) card holders. The card
holders allow the circuit and equipment connected to the
circuit to easily be identified. The rear of each patch
panel (fig. 2-19), has two connectors (C1 and C2), that
are used to connect the jack set circuits (through
connectors J1 and J2) to the IDF.
Figure 2-17. Digital Line Isolators, Wiring Diagram
2-20
TM 11-5895-878-14&P
Figure 2-18. Universal Digital Patch Panel Front View.
2-21
TM 11-5895-878-14&P
Figure 2-19. Universal Digital Patch Panel Bay, Rear View.
2-22
TM 11-5895-878-14&P
Below the connectors are 24 program modules. Between
the connectors and program boards there is a jack set ID
strip indicating the jack set associated with each program
aboard.
b. Circuit Functions (fig. FO-7). Each jack set is
connected (through a flexible printed circuit board) to a
program board. The board is programmed by a program
module (containing jumpers) to set up an operation circuit.
The functions that may be performed by the circuits are
given in (1) through (6) below. The actual circuits for which
modules are available are given in paragraph 2-11.
(1) Provides a normal through path for digital
signals when no patches are made.
(2) When patching in a replacement sending
device, the patching configuration will terminate the
interrupted sending equipment in an impedance equal to the
input impedance of the receiving device.
(3) When patching in a replacement receiving
device the patching configuration will hold the interrupted
receiving equipment with a holding voltage or current equal
to the mark voltage or current transmitted by the sending
device.
(4) The patch panel will perform the above
functions for all the following types of digital signals:
(a) Low level ± 6 VDC send and receive.
(b) Low level ± 3 VDC send and receive.
(c) High level polar or neutral send and
receive.
(d) Low level receive with associated
timing.
(e) Low level send with timing from sending
to receiving device.
(f) Low level send with timing from
receiving to sending device.
(g) Low level send with timing from an
external standard to both sending and receiving devices.
(5) The patch panel also incorporates a special
function for those circuits utilizing either an external timing
standard or timing from a receiving device to a sending
device. When a transmitted signal is to be patched back to
the receiving portion of the same equipment for testing
purposes, a problem would normally arise. Since external
timing is necessarily introduced on the line side of a jack
field, a line-send-to-line-receive (back to back line) patch
required to perform the above test for equipment external to
the TCF contains two timing signals (one injected into the
send field and one received on the incoming line).
Conversely, an equipment send-to-equipment-receive (back
to back equip) patch required to perform the test for
equipment internal to the TCF contains no timing signal.
When timing is sent from a receiving device to a sending
device the same problem can occur (i.e., two timing signals
on a back to back line and none on a back to back equip). A
push button "back-to-back" switch allows the removal of one
of the two timing signals present in a back to back line patch
and the introduction of timing in a back-to-back equip patch.
An indicator light as well as switch position indicates the
activation of this function in all cases.
2-23
(6) The signal common "ring" lead of an
interrupted signal is never left open. It may be supplied
DC ground or another program elected termination.
2-11. Universal Digital Patch Panel, Programs
a. General.
There are 17 different program
modules provided to be used with the patch panel. The
modules are identified as PROGRAM MODULE
ASSEMBLY LBAD-D-52724 GP-1 through GP-17. The
circuit configuration for each group is shown in figures 220 through 2-36. The in module jumpers and jack
functions are given in b through r below. The function of
each group module is as follows:
Group No.
Function
1
Red Receive
2
Red Send
3
Red Control
4
Black Send
5
Black Receive
6
High Level Send
7
High Level Receive
8
Low Level Send W/Timing From External
Standard To Both Sender & Data Receiver
9 Low Level Send W/Timing From Data Receiver
To Data Sender
10 Low Level Send W/Timing From Data Sender To
Data Receiver
11 Low Level Receive W/Timing (Always From Data
Sender To Data Receiver).
12 Low Level ± 6 VDC Send
13 Low Level ± VDC Receive
14 Low Level Balanced (+3V and -3V) Send.
15 Low Level Balanced (±3V and -3V) Receive.
16 Black Send (Modified - Less Station Clock)
17 Black/Red Receive
NOTE
For terminal identification figures 220 through 2-36, refer to figure FO-7.
b. Red Receive Circuit, Program Module GP-1 (fig.
2-20).
(1) This programming module connects the
following terminals:
B2 to E1
B1 to J3
C1 to F3
B3 to J1
D2 to K3
L1 to J1
F2 to F3
M3 to J3
H3 to El
(2) When a patch cord plug is inserted into
the LINE jack, the following connections are made.
Terminal
Termination
T
To TCF plugged equipment
R
To TCF plugged equipment
T1
Unterminated
R1
Unterminated
(3) When a patch cord plug is inserted into
the EQUIP jack, the following connections are made.
TM 11-5895-878-14&P
Terminal
Termination
T
Unterminated
R
Unterminated
T1
From line equipment plugged
R1
From line equipment plugged
c. Red Send Circuit, Program Module GP-2 (fig. 2-
d. Red Control Circuit, Program Module GP-3 (fig.
2-22).
(1) This programming module connects the
following terminals:
B2 to E1
B1 to J3
C1 to F3
B3 to J1
L1 to J1
F2 to F3
M3 to J3
H3 to E1
D2 to K3
C2 to D2
C3 to D1
C3 to K3
(2) When a patch cord plug is inserted into
the LINE jack, the following connections are made.
Terminal
Termination
T
To TCF plugged equipment
R
To TCF plugged equipment
T1
Unterminated
R1
Unterminated
(3) When a patch cord plug is inserted into
the EQUIP jack, the following connections are made.
Terminal
Termination
T
Unterminated
R
Unterminated
T1
From plugged line equipment
R1
From plugged line equipment
21).
(1) This programming module connects the
following terminals:
B3 to J1
C1 to F3
B1 to 33
B2 to E1
D2 to K3
L1 to J1
F2 to F3
M3 to J3
H3 to E1
(2) When a patch cord plug is inserted into
the LINE jack, the following connections are made.
Terminal
Termination
T
To TCF plugged equipment
R
To TCF plugged equipment
T1
Unterminated
R1
Unterminated
(3) When a patch cord plug is inserted into
the EQUIP jack, the following connections are made.
Terminal
Termination
T
Unterminated
R
Unterminated
T1
To plugged line equipment
R1
To plugged line equipment
2-24
TM 11-5895-878-14&P
Figure 2-20. Universal Digital Patch Panel, Red Receive Circuit Schematic Diagram.
2-25
TM 11-5895-878-14&P
Figure 2-21. Universal Digital Patch Panel, Red Send Circuit, Schematic Diagram.
2-26
TM 11-5895-878-14&P
Figure 2-22. Universal Digital Patch Panel, Red Control Circuit, Schematic Diagram
2-27
TM 11-5895-878-14&P
E3 to M2
D3 to E2
M3 to J3
H3 to E1
L1 to J1
F2 to F3
G1 to F3
C3 to D2
D1 to C3
e. Black Send Circuit, Program Module GP-4 (fig.
2-23).
(1) This programming module connects the
following terminals:
B2 to E1
B1 to J3
C1 to F3
B3 to J1
C2 to N2
D2 to K3
D2 to M2
D3 to E2
M3 to J3
H3 to E1
L1 to J1
F2 to F3
H3 to N3
A1 to H1
A2 to M1
E3 to K1
H3 to N3
C3 to D1
C3 to K3
(2) When a patch cord plug is inserted into
the LINE jack, the following connections are made.
(2) When a patch cord plug is inserted into
the LINE jack, the following connections are made.
Terminal
Termination
T
To TCF plugged equipment
R
To TCF plugged equipment
T1
Unterminated
R1
Unterminated
(3) When a patch cord plug is inserted into
the EQUIP jack, the following connections are made.
Terminal
Termination
T
Unterminated
R
Unterminated
T1
From plugged line equipment
R1
From plugged line equipment
g. High Level Send Circuit, Program Module GP-6
(fig. 2-25).
(1) This programming module connects the
following terminals:
B3 to L1
C1 to F3
B1 to M3
B2 to El
D2 to L3
A3 to H1
D2 to M1
D1 toK1
J3 to H3
N1 to L2
J1 to F2
K2 to F1
(2) When a patch cord plug is inserted into
the LINE jack, the following connections are made.
Terminal
Termination
T
From TCF plugged equipment
R
From TCF plugged equipment
T1
High level termination
R1
Grounded
(3) When a patch cord plug is inserted into
the EQUIP jack, the following connections are made.
Terminal
Termination
T
From TCF plugged equipment
R
From TCF plugged equipment
T1
Unterminated
R1
External timing
(3) When a patch cord plug is inserted into
the EQUIP jack, the following connections are made.
Terminal
Termination
T
Unterminated
R
External timing
T1
To plugged line equipment
R1
To plugged line equipment
f. Black Receive Circuit, Program Module GP-5
(fig. 2-24).
(1) This programming module connects the
following terminals:
B2 to E1
B1 to J3
C1 to F3
B3 to J1
C2 to N2
D2 to K3
2-28
TM 11-5895-878-14&P
Figure 2-23. Universal Digital Patch Panel, Black Send Circuit, Schematic Diagram
2-29
TM 11-5895-878-14&P
Figure 2-24. Universal Digital Patch Panel Black Receive Circuit, Schematic Diagram
2-30
TM 11-5895-878-14&P
Figure 2-25. Universal Digital Patch Panel, High Level Send Circuit, Schematic Diagram
2-31
TM 11-5895-878-14&P
C2 to L3
D2 to K3
E3 to M2
D3 to E2
J2 to J3
G3 to E1
G2 to J3
H2 to E1
E1 to N3
Terminal
Termination
T
POS hold battery
R
Grounded
T1
To plugged line equipment
R1
To plugged line equipment
h. High Level Receive Circuit, Program Module
GP-7 (fig. 2-26).
(1) This programming module connects the
following terminals:
B1 to M3
B2 to E1
B3 to L1
C1 to F3
D2 to L3
D1 to H1
D2 to M1
A3 to K1
J3 to H3
N1 to L2
J1 to F2
K2 to F1
(2) When a patch cord plug is inserted into
the LINE jack, the following connections are made.
Terminal
Termination
T
To TCF plugged equipment
R
To TCF plugged equipment
T1
POS hold battery
R1
Grounded
(3) When a patch cord plug is inserted into
the EQUIP jack, the following connections are made.
Terminal
Termination
T
High level termination
R
Grounded
T1
From plugged line equipment
R1
From plugged line equipment
i. Low Level Send Circuit (with Timing from an
External Standard to both Sender and Data Receiver).
Program Module GP-8 (fig. 2-27).
(1) This programming module connects the
following terminals:
B3 to J1
C1 to F3
B1 to J3
B2 to E1
A1 to H1
D1 to K1
(2) When a patch cord plug is inserted into
the LINE jack, the following connections are made.
Terminal
Termination
T
From TCF equipment plugged
R
External timing to TCF
equipment plugged.
T1
Terminated across 56K
R1
External timing
(3) When a patch cord plug is inserted into
the EQUIP jack, the following connections are made.
Terminal
Termination
T
POS hold battery
R
External timing
T1
To line equipment plugged
R1
To line equipment plugged
j. Low Level Send Circuit (with Timing from Data
Receiver to Data Sender). Program Module GP-9 (fig.
2-28).
(1) This programming module connects the
following terminals:
B3 to J1
B2 to N2
B1 to J3
C1 to F3
C2 to L3
N3 to E1
A1 to H1
A2 to M1
D1 to K1
D2 to K3
E3 to M2
D3 to E2
J2 to J3
G3 to E1
G2 to J1
H2 to F3
2-32
TM 11-5895-878-14&P
Figure 2-26. Universal Digital Patch Panel, High Level Receive Circuit, Schematic Diagram.
2-33
TM 11-5895-878-14&P
Figure 2-27. Universal Digital Patch Panel, Low Level Send Circuit (with Timing from an External Standard to Both Sender and Data Receiver),
Schematic Diagram.
2-34
TM 11-5895-878-14&P
Figure 2-28. Universal Digital Patch Panel, Low Level Send Circuit (with Timing from Data Receiver to Data
Sender), Schematic Diagram.
R1
From line equipment plugged
k. Low Level Send Circuit (with Timing from Data
Sender to Data Receiver), Program Module GP-10 (fig.
2-29).
(1) This programming module connects the
following terminals:
B3 to J1
C1 to F3
B1 to J3
B2 to F1
C2 to M1
A1 to L3
A2 to H1
D1 to K1
D2 to K3
(2) When a patch cord plug is inserted into
the LINE jack, the following connections are made.
Terminal
Termination
T
From TCF equipment plugged
R
To TCF equipment plugged
T1
Terminated across 56K to
ground
R1
External timing
(3) When a patch cord plug is inserted into
the EQUIP jack, the following connections are made.
Terminal
Termination
T
POS hold battery
R
Terminated across 56K to
ground
T1
To line equipment plugged
2-35
TM 11-5895-878-14&P
E3 to M2
D3 to E2
J2 to J3
G3 to E1
G2 to J1
H2 to F3
E3 to M2
D3 to E2
J2 to J3
G3 to E1
G2 to J1
H2 to F3
(2) When a patch cord plug is inserted into
the LINE jack, the following connections are made.
Terminal
Termination
T
From TCF plugged equipment
R
From TCF plugged equipment
T1
Terminated across 56K to
ground
R1
Terminated across 56K to ground
(3) When a patch cord plug is inserted into
the EQUIP jack, the following connections are made.
Terminal
Termination
T
POS hold battery
R
External timing
T1
To plugged line equipment
R1
To plugged line equipment
l. Low Level Receive Circuit (with Timing from
Data Sender to Data Receiver), Program Module GP-11
(fig. 2-30).
(1) This Programming Module connects the
following terminals:
B1 to J3
B2 to E1
B3 to J1
C1 to F3
C2 to N2
C2 to L3
D1 to H1
Al to M1
A2 to K1
D2 to K3
(2) When a patch cord plug is inserted into
the LINE jack, the following connections are made.
Terminal
Termination
T
To TCF plugged equipment
R
To TCF plugged equipment
T1
POS hold battery
R1
External timing
(3) When a patch cord plug is inserted into
the EQUIP jack, the following connections are made.
Terminal
Termination
T
Terminated across 56K
R
Terminated across 56K
T1
From line equipment plugged
R1
From line equipment plugged
m. Low Level +6 VDC Send Circuit, Program
Module GP-12 (fig. 2-31).
(1) This programming module connects the
following terminals:
B1 to J3
B2 to E1
B3 to J1
C1 to F3
D2 to L3
A1 to H1
D2 to M1
D1 to K1
J2 to J3
G3 to E1
G2 to J1
H2 to F3
2-36
TM 11-5895-878-14&P
Figure 2-29. Universal Digital Patch Panel, Low Level Send Circuit (with Timing from Data Sender to Data Receiver), Schematic Diagram.
2-37
TM 11-5895-878-14&P
Figure 2-30. Universal Digital Patch Panel, Low Level Receive Circuit (with Timing from Data Sender to Data
Receiver), Schematic Diagram
2-38
TM 11-5895-878-14&P
Figure 2-31. Universal Digital Patch Panel, Low Level +6VDC Send Circuit, Schematic Diagram.
2-39
TM 11-5895-878-14&P
o. Low Level Balanced (+3V and- V) Send Circuit,
Program Module GP-14 (fig. 2-33).
(1) This programming module connects the
following terminals:
B3 to J1
C1 to F3
B1 to J3
B2 to E1
A3 to L3
A1to H1
A2 to A1
C3 to M1
D1 to K1
J2 to J3
G3 to E1
G2 to J1
H2 to F3
(2) When a patch cord plug is inserted into
the LINE jack, the following connections are made.
Terminal
Termination
T
From TCF equipment plugged
R
From TCF equipment plugged
T1
Terminated across 28K
R1
Terminated across 27K
(3) When a patch cord plug is inserted into
the EQUIP jack, the following connections are made.
Terminal
Termination
T
POS hold battery
R
NEG hold battery
T1
To line equipment plugged
R1
To line equipment plugged
p. Low Level Balanced (+3V and - 3V) Receive
Circuit, Program Module GP-15 (fig. 2-34).
(1) This programming module connects the
following terminals:
B1 to J3
B2 to E1
B3 to J1
C1 to F3
C3 to L3
D1 to H1
A3 to M1
A1 to K1
A2 to A1
J2 to J3
G3 to E1
G2 to J1
H2 to F3
(2) When a patch cord plug is inserted into
the LINE jack, the following connections are made.
Terminal
Termination
T
From plugged TCF equipment
R
From plugged TCF equipment
T1
Terminated across 56K
R1
Grounded
(3) When a patch cord plug is inserted into
the EQUIP jack, the following connections are made.
Terminal
Termination
T
POS hold battery
R
Grounded
T1
To plugged line equipment
R1
To plugged line equipment
n. Low Level +6 VDC Receive Circuit, Program
Module GP-13 (fig. 2-32).
(1) This programming module connects the
following terminals:
B1 to J3
B2 to E1
B3 to J1
C1 to F3
D2 to L3
D1 to H1
D2 to M1
H1 to K1
J2 to J3
G3 to E1
G2 to J1
H2 to F3
(2) When a patch cord plug is inserted into
the LINE jack, the following connections are made.
Terminal
Termination
T
To
TCF
plugged
equipment
R
To
TCF
plugged
equipment
T1
POS hold battery
R1
Grounded
(3) When a patch cord plug is inserted into
the EQUIP jack, the following connections are made.
Terminal
Termination
T
Terminated across 56K
R
Grounded
T1
From line equipment plugged
R1
From line equipment plugged
2-40
TM 11-5895-878-14&P
Figure 2-32. Universal Digital Patch Panel, Low Level +6VDC Receive Circuit, Schematic Diagram.
2-41
TM 11-5895-878-14&P
Figure 2-33. Universal Digital Patch Panel, Low Level Balanced (+3VDC and - 3VDC) Send Circuit Schematic Diagram
2-42
TM 11-5895-878-14&P
Figure 2-34. Universal Digital Patch Panel, Low Level Balanced (+3VDC and - 3 VDC) Receive Circuit, Schematic Diagram
2-43
TM 11-5895-878-14&P
Terminal
Termination
T
Unterminated
R
External timing
T1
To plugged line equipment
R1
To plugged line equipment
r. Black/Red Receive Circuit, Program Module
GP-17 (fig. 2-36).
(1) This programming module connects the
following terminals:
B2 to E1
B1 to J3
C1 to F3
B3 to J1
C2 to N2
C2 to L3
E3 to H1
A1 to M1
A2 to K1
D2 to K3
D2 to M2
D3 to E2
J3 to M3
E1 to H3
J1 to L1
F3 to F2
G1 to F2
C3 to D1
C3 to K3
(2) When a patch cord plug is inserted into
the LINE jack, the following connections are made.
Terminal
Termination
T
To TCF plugged equipment
R
To TCF plugged equipment
T1
Unterminated
R1
Unterminated
(3) When a patch cord plug is inserted into
the EQUIP jack, the following connections are made.
Terminal
Termination
T
Unterminated
R
Unterminated
T1
From plugged line equipment
R1
From plugged line equipment
(2) When a patch cord plug is inserted into
the LINE jack, the following connections are made.
Terminal
Termination
T
To TCF equipment plugged
R
To TCF equipment plugged
T1
POS hold battery
R1
NEG hold battery
(3) When a patch cord plug is inserted into
the EQUIP jack, the following connections are made.
Terminal
Termination
T
Terminated across 28K
R
Terminated across 27K
T1
From line equipment plugged
R1
From line equipment plugged
q. Black Send Circuit (Modified Less Clock),
Program Module GP-16 (fig. 2-35).
(1) This programming module connects the
following terminals:
B2 to E1
B1 to J3
C1 to F3
B3 to J1
C2 to N2
D2 to K3
E3 to M2
D3 to E2
M3 to J3
H3 to E1
L1 to J1
F2 to F3
L3 to N3
(2) When a patch cord plug is inserted into
the LINE jack, the following connections are made.
Terminal
Termination
T
From TCF plugged equipment
R
From TCF plugged equipment
T1
Unterminated
R1
External timing
(3) When a patch cord plug is inserted into
the EQUIP jack, the following connections are made.
2-44
TM 11-5895-878-14&P
Figure 2-35. Universal Digital Patch Panel, Black Send Circuit (Modified Less Clock), Schematic Diagram
2-45
TM 11-5895-878-14&P
Figure 2-36. Universal Digital Patch Panel, Black/Red Receive Circuit, Schematic Diagram.
2-46
TM 11-5895-878-14&P
Section IV. WIDEBAND CIRCUITS AND PATCH PANEL
2-12. Wideband Circuits, General
a. There are three locations where wideband
circuits may be accessed in the P&T. The black side of
circuits are accessed at five patch panels in bay 1.8 (fig.
1-3). Special intelligence circuits are accessed at three
patch panels in -bay 2.1 (fig. 1-8).
b. Wideband circuits may contain video signals or
vf group signals. A typical wideband circuit is discussed
in paragraph 2-13. The wideband patch panel is
discussed in paragraph 2-14.
(3) The KG-24 is used to connect the
encrypted signals to clear text.
2-14. Wideband Patch Panel
a. Description (fig. 2-37). The wideband patch
panel contains 20 sets of 3 associated 75-ohm Twinax
jacks. Each jack set is used for one circuit (send or
receive). The send circuit jack set is usually on the left
of the receiver circuit jack set. The top row of jacks are
LINE jacks. The second row of jacks are EQUIP jacks.
The bottom row of jacks are MON jacks.
An
identification card holder strip is mounted across the
bottom of the jack sets.
b. Circuit Function (fig. 2-38). The equipment
cable is connected to the EQUIP jack. When there is no
plug in the EQUIP jack, closed contacts in the EQUIP
jack connect that jack in series with the LINE jack. The
LINE jack is similar to the EQUIP jack and completes a
through circuit to the line cable connector. When a plug
is inserted into the EQUIP jack the normal through
circuit to the line connector is broken. The equipment
cable is connected to the plug in the EQUIP jack and the
line cable is terminated across a 75-ohm resistor (the
impedance of the cable). When a plug is inserted into
the LINE jack, the normal through is also broken. The
line cable is connected to the plug in the LINE jack. The
equipment cable is terminated across the 75-ohm
resistor. A MON jack. is parallel connected across the
line cable connection, through two 560ohm isolation
resistors and a 75-ohm termination resistor. The
isolation. resistors provide a monitoring signal that is 30
dB below the line signal.
2-13. Typical Wideband Circuit (fig. FO-8)
a. General. The cable connecting equipment to
the patch panels is 75-ohm Triax type cable. The patch
panels are 75-ohm Twinax type. Therefore, Triax-toTwinax adapters are used to connect the Triax cables to
the patch panels.
b. Send Circuit.
The send signals from the
Pentagon user are in clear text, and connected to the
LINE jack of a jack set in red patch bay 2.18. The jack
set is wired normal through the LINE and EQUIP jacks
of the jack set. The signals out of the jack set are from
the EQUIP jack and connected to the input of a KG-24
crypto equipment. The *output signals from the KG-24
are encrypted and connected to the EQUIP jack of a
jack set in black patch bay 1.8. The jack set is normal
through wired. The output from the LINE jack is
connected to the commercial radio send input.
c. Receive Circuit. The receive circuit is similar to
the send circuit except for the following:
(1) Signals are received from the commercial
radio in a secure crypto form.
(2) Receive jack sets are used in both the
black and red patch bays.
Figure 2-37. Wide Band Patch Panel, Front View.
2-47
TM 11-5895-878-14&P
Figure 2-38. Wide Band Patch Panel, Schematic Diagram.
Section V. TEST EQUIPMENT AND MISCELLANEOUS INTERNAL SUBSYSTEMS
coordination, coordination with other sites, fault
reporting and display, administration, and power
requirements. The various internal, nontraffic handling
subsystems include the ac power system, dc power
system, station grounding systems, alarm system, and
interbay trunking system.
The subsystems are
discussed in paragraphs 2-16 through 2-20.
2-15. Scope
a. Test Equipment.
A major responsibility of
Technical Control personnel is that of monitoring and
testing circuits passing through the station to determine
circuit quality and to determine operating conditions.
Additionally, they are responsible for the rapid
identification and isolation of faulty equipment in order
to
achieve
optimum
operating
effectiveness.
Accordingly, assorted test and monitor equipment inputs
are strategically located throughout the Technical
Control facility to provide an efficient means for
performing these operations. The functions of the P&T
test equipment are given in paragraph 2-16.
b. Internal Subsystems. Many items of equipment
are required to perform nontraffic missions within the
station. Some of these missions include intersite
2-16. Test Equipment
a. Attenuator Panel (fig. 1-2). The attenuator
panel contains two variable pads. The pad on the left
has a range of 45 dB. The pad on the right has a range
of 60 dB.
b. Digital Multimeter, Model 269.
The 269
multimeter provides a digital readout of measurements
given below. The accuracy of the multimeter is .02%.
2-48
TM 11-5895-878-14&P
Type measurement
Scale range
Dc volts
Iv to 1,000v
Ac volts
Iv to 750v (50 Hz to 20 KHz)
Dc current
100µ to 1,000ma
Ac current
100µa to 1,000ma (50 Hz to 5 KHz)
Dc resistance 0 ohm to 10 Meg ohm
c. Telegraph Carrier TestSetKS-19935.
This
model of the KS-19935 consists of Control Unit L5 and
Electronics S Unit L1. The test set measures the level
and frequency (steady-state) of the tones used in
telegraph carrier and low speed data systems.
(1) AC level Meter. The Test Set allows
selection and level measurement of any individual
channel of a standard multiplex carrier system where a
normal signal level of 0, - 10, - 17, or -26dBm (singlewidth) or +3, -7, -14, or -23dBm (double-width) exists
per channel. Channel separation of 40dB is provided,
and tone levels may be measured with an overall
accuracy of ±1 dB.
The level measurement is
presented on a dB meter as the deviation in level, of the
channel under observation, from the selected normal
level stated above (-17, -26, etc.).
(2) Frequency Meter. The Mark or Space
frequency error of the selected carrier channel (when in
a steady Marking or Spacing condition) is measured and
indicated in Hz deviation on a front-panel meter.
Overall accuracy of the frequency measurement is
within ±.0.5 cps.
(3) Universal Demodulator. At the same time
that the level of the selected carrier channel is being
measured, the tone signals (AM or FM) are
demodulated and are available to drive a telegraph
output circuit for monitor TTY machine printout or as a
test point to provide an indication of distortion. Thus,
troubles in a carrier system can be quickly and easily
localized to sending or receiving terminal equipment.
The output signals are standard electronic hub (+60/30v) drive; as an option, neutral output loop keying can
be provided for use in the neutral TLT testboard.
NOTE
Generally, distortion measurements
made at the demodulator output will
be higher, by a few percent, than the
true measurements made on the
circuit under observation.
d. Transmission Measuring Test Set, HP-3550AR.
The Hewlett-Packard model 3550AR is used to measure
transmission line and system characteristics such as
attenuation, frequency response, or gain. It contains a
wide range oscillator, a voltmeter, and a patch panel to
match both the oscillator and the voltmeter to 135-, 600, and 900-ohm lines.
e. Dual Speaker Panel.
Speaker panels are
mounted in the bottom of various patch bays in the P&T.
These panels are used for oral monitoring of VF circuits
carrying voice signals for the purpose of determining
continuity and/or the quality of the speech traffic. The
panel includes two amplifier/speaker combinations. This
allows two independent inputs and outputs. Both inputs
are wired to jacks in TM 11-5895-878-14&P the
miscellaneous panel of a test bay. For monitoring
purposes, either of these two inputs may be patched via
interbay trunk jacks to the MON (Monitor) jacks in the
VF circuit patch panels without degradation or
interruption of circuit operation.
f. Oscilloscopes. The oscilloscopes provide dual
visual displays of electrical signals and parameters.
Plug-in units provide wide ranges of measurement
capability.
g. Video Waveform Monitor 1485R (fig. 1-3). The
Tektronix 1485R Video Waveform Monitor is a
specialized oscilloscope with triggering and vertical
characteristics designed for accurate measurement of
the composite video signal. The monitors' vertical
amplifiers have very carefully controlled responses
necessary for video system signal fidelity.
The
waveform monitor, monitors 525/60 and 625/50
systems.
h. Electronic Counter HP-5245L.
The counter
provides a digital readout of the frequency of the signal
being measured. The frequency range is from dc to 50
MHz.
i. Data Transmission Test Set 601 (fig. 1-5). The
Frederick Electronics Corp.
Model 601 Data
Transmission Test Set is designed specifically for
testing circuits utilizing Bell Data Transmission Sets by
means of error counting techniques. The Model 601
consists of the following modules: (1) A Pattern
Generator which is the source of test signals for
comparison with received signals from the system under
test; (2) A Synchronizer which establishes and maintains
bit and pattern sychronization, recognizes pattern errors,
and develops error pulses for storage and subsequent
readout; (3) An Error Counter which counts the number
of errors in the incoming data and registers the total
count on a front panel mechanical counter. The Error
Counter includes a visual and aural alarm system which
warns the operator whenever the error rate exceeds the
storage capacity; (4) A Power Supply which provides all
operating voltages for the Model 601; (5) A second
Pattern Generator which is the source of test signals for
transmission to the system under test. Two Pattern
Generator modules are incorporated into the Model 601
so that a single unit can be used to perform error rate
tests on data subsets connected back-to-back. For this
method of testing, one Pattern Generator transmits the
test pattern to the system and the other Pattern
Generator provides a synchronized pattern for
comparison with the pattern at the output of the system.
j. Signal Distortion Analyzer Group ANIGGM1S(V). This set provides a capability for measuring
signals in DC teleprinter/data loops and for transmitting
digital test messages over these loops. The Digital
Distortion Analyzer Set includes three major
components, that is, a signal generator, a signal
distortion analyzer and an oscilloscope.
(1) Signal Generator SG-860/GGM-15(V).
This unit generates data and telegraph signal outputs
with controlled distortion at speeds up to 9600 baud.
Various message options are available for Baudot or
ASCII codes
2-49
TM 11-5895-878-14&P
of 80 or 128 characters.
(2) Signal Distortion Analyzer TS-28621GGM15(V). This unit performs three major functions:
Distortion analysis, distortion monitoring,
and error rate determination.
(3) Oscilloscope OS-20/GGM-15(V).
This
unit is used to display the signal under analysis.
k. Phase Jitter Meter, Model 48 (fig. 1-15). The
model 48 phase jitter meter measures the following:
(1) Peak to peak phase jitter.
(2) Phase, amplitude, coincident hits and
dropouts.
(3) Meters input/output levels and input
frequency.
(4) External jitter, frequency offset, and
totalizer outputs.
I. Impulse Noise Counter. The impulse noise
counter is a Northeast Electronics Corporation Model
TSS58AR.
The unit counts the number of impulses
exceeding three different selected levels for a selected
length of time. The unit provides three indications, each
giving the number of times an impulse exceeds the
associated adjusted level.
m. Dual-Channel Recorder, HP-7702B and 7034A.
The recorders are used for simultaneous recording of
two related variables when the variables are to be
analyzed with respect to each other and with respect to
time, and when any variable needs to be permanently
recorded.
n. Digital Recorder HP-5050B. The digital recorder
provides a versatile method for recording time with 0.1
second resolution along with other data measurements
being recorded by a printer. In addition the recorder
serves as an automatic measuring-recording system
programmer by allowing printing at preselected time
intervals.
o. Vector Impedance Meter, HP-4800A. The HP4800A is used to make fast measurements of
impedance to 10 megohms and phase to ±90°. The
measurement can be made at a particular frequency or
over a continuous range from 5Hz to 50kHz.
p. Distortion Analyzer HP-334A. The HP-334A
measures total distortion down to 0.1 percent of full
scale at any frequency between 5 Hz and 600 KHz.
Harmonics are indicated up to 3 MHz.
Noise is
measured as low as 50 microvolts and voltages may be
measured up to 3MH: with 300/-V to 300 full scale.
q. Wave Analyzer HP-302A. The Model 302A
Wave Analyzer separates a complex input signal into
individual frequency components such as harmonic,
intermodulation
products,
and
other
spectral
components. By tuning the 302A across the spectrum,
the components can be individually measured and
evaluated. Frequency is read in Hz from the dial, and
amplitude is read in volts, percent or dB from the meter.
The 302A is also an oscillator-tune voltmeter
combination. This feature is particularly useful for
measuring input-output characteristics of filters,
amplifiers, and active devices. The oscillator output
(BFO) and the analyzer's input tuning track together
over the entire range of 20 Hz and 50 kHz and is
controlled by the tuning dial. Because one control tunes
both the oscillator output and the analyzer input
simultaneously, on-estep response measurements are
made simply, quickly and conveniently. And, since the
analyzer has a very narrow bandpass, any signal
distortion has negligible effect on the meter reading,
making measurements highly accurate even at very low
levels.
r. Multimeter HP-3490A.
The HP-3490A
Multimeter is a five-digit integrating digital voltmeter.
The basic instrument measures dc voltages, ac
voltages, and resistances. Additional measurement
capability is achieved by the addition of low cost
options. The HP-3490A uses a C dual slope integrating
technique and is fully guarded, providing excellent noise
immunity at five readings per second on all dc ranges.
Ranging is automatic over all ranges on all functions.
DC measurements can be made with 1µ V of ac voltage
resolution. Ohms measurements can be made, utilizing
the four-wire conversion technique which eliminates
errors due to test lead resistances. Six ranges of ohms,
including a 10,000 Kohm range, are provided. All
functions and ranges include 20% overranging except
the 1000 V range.
2-50
TM 11-5895-878-14&P
Figure 2-39. Quality Assurance Test Center, Equipment Connection Panel, Front View.
2-51
TM 11-5895-878-14&P
Figure 2-40. Typical Miscellaneous Patch Panel, Front View.
2-52
TM 11-5895-878-14&P
(3) Black vf (c below).
(4) Red vf.
(5) Red QA (d below).
b. Digital Interbay Trunking Systems. The black
and red systems use INT panels with 48 jacks and 48
lamps (fig. 2-41). The panel has two rows of 24 jacks
and two rows of 24 in-use lamps. The first 20 sets of
jacks and lamps in each row (1 through 20, and 25
through 45) are connected in a parallel configuration at
the IDF. That is, all No. 1 jacks are paralleled to each
other, all No. 2 jacks are paralleled to each other etc.
The in-use lamps (fig. 2-42) are wired to their associated
jacks so that when a patch cord plug is inserted into the
jack, all the same No. lamps in that system light. This
indicates which interbay trunks are in use. The last four
sets of jacks and lamps in each panel (21 through 24,
and 45 through 48) are provided for use as
miscellaneous jacks.
c. VF Interbay Trunking Systems. The interbaying
capability in the VF area is provided by the interbay
patch panels which are mounted in the bottom of every
VF patch and test bay. The panel has two rows of 24
jacks per row for a total of 48 interbay trunk
appearances per bay. The front view of the panel
resembles that shown in figure 2-40; however, there are
no lamps in the panel. The schematic is that shown in
figure 2-43. Terminal blocks C1 and C2 of each panel
are cabled to the IDF where the panels are crossconnected to form a "series" interbay trunking system.
The cross-connecting is done such that each circuit is
private. That is one jack in a bay is only crossconnected to one jack in the other bay. The first three
sets of jacks in bays 1.2 through 1.7 in the black system
are labeled 1.1. Bay 1.1 is an IDF and does not have an
INT panel. These six jacks in each bay are crossconnected to the black INT panel in bay 3 of the QA
Test Center (fig. 1-15). The red vf system consists of
two INT panels, bays 2.19 and 2.20 (fig. 1-14).
s. QA Test Center, Equipment Connection Panel.
Bay 1 of the QA Test Center (fig. 1-15) contains an in
house uilt equipment connection panel (fig. 2-39).
The panel provides connection to equipments with out
front panel connection.
Also, a single-pole-singlethrough switch is provided to connect the HP-3490A
multimeter to the IP-5050B digital recorder. In addition,
the switch may also be set to connect the HP-5245L
electronic counter (FREQ COUNTER) to the HP-5050B
digital recorder. All connectors on the panel are BNC
type. BNC to banana jack adapters are used on all
connectors except the 601 BIT ERROR TEST SET
connector. This connection requires an AMP, 25-pin
type.
t. Miscellaneous Patch Panels (fig.
2-40).
Miscellaneous patch panels are located in the patch and
test facilities to provide the flexibility required for test
and monitoring operations. The jacks are wired and
cross-connected as desired by the site personnel.
Figure 2-40 provides a typical function arrangement for
a miscellaneous. panel with 10 lamps in a TCF. Figure
2-46 provides the panel schematic and block
terminations. The panel provides such desirable jack
arrangements and functions as 600 Ohms load, parallel
jacks, line reversing (top-to-ring, ring-to-tip), and test
equipment connections.
u. Interbay Patch Panels. Each patch and test bay
contains an INT Panel. Interbay trunks are used to
route circuits to other patch bays in the station. The
various types of INT patch panels in the P&T are
discussed in paragraph 2-17.
2-17. Interbay Trunking Systems
a. General. The P&T has five different interbay
trunking systems. The systems are designed to allow
sufficient trunking of circuits from one patch or test bay
in a system to other bays in that system. The trunking
systems are not interconnected and come together only
at the intermittent test stations. The systems are listed
below.
(1) Black digital (b below).
(2) Red digital.
2-53
TM 11-5895-878-14&P
Figure 2-41. Dc Interbay Patch Panel with 48 Lamps, Front View
2-54
TM 11-5895-878-14&P
Figure 2-42. Dc Interbay Patch Panel with 48 Lamps, Schematic Diagram.
2-55
TM 11-5895-878-14&P
Figure 2-43. Voice Frequency Interbay Patch Panel, Schematic Diagram.
2-56
TM 11-5895-878-14&P
power sources, A, C, & D. The critical PTC load is 154
KVA and the noncritical load is 249 KVA. Source A is
the main source of power feeding the PTC. It is
commercial power generated at the local power
company. Source C consists of two 250 KW diesel and
two 936 KVA rated gas turbine generators. Source D is
an UPS power source capable of delivering 156 KVA of
power to the critical load. The batteries in the UPS
system consist of 163 lead calcium batteries, that are
good for 15 minutes of operation when other power
systems fail. Red and black P&T power distribution
from their associated distribution boxes (fig. FO-1) is
given in b and c below.
b. Red AC Power Distribution. All AC power to the
red side of the P&T is connected with 14 AWG wire,
except the two 24 vdc and the two 48 vdc power
supplies. Single phase, 120 volts, 50 Hz AC power is
connected with three wires to all outlets and equipment
as listed below.
d. Red QA Interbay Trunking System. The red
Quality Assurance system is made up of a TRIAX
TRUNK panel in bay 2 of the QA test center. There are
six TRIAX cables connected from dual banana jacks on
the QA panel to six TWINAN jacks in bay 2.18 (fig. 113). These connections are to the first six bottom
connectors on the red QA TNT panel. Above each jack
is an in-use lamp. Lamps are also located on the TRIAX
TRUNK panel (fig. 1-15). The lamps are powered by a
48 vdc power supply in the bottom of bay 3. The red
QA panel (fig. 1-13) has two vf tie trunks to the first two
lamp jacks in the MISC in bay 2.20 (fig. 1-14) for vf
patching.
Trunks are also provided to each odd
numbered digital bay in row two for patching red digital
circuits to the QA test center.
2-18. AC Power System
a. General. The PTC operates on 208/120 VAC, 3
phase, 60 Hz power. There are four 50,000 circular mil
feeders feeding the PTC from one of three available
Ckt No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30-40
Amperes
15
15
15
15
15
15
15
15
15
15
30
30
15
15
15
15
15
15
15
15
15
15
15
15
30
15
30
15
20
Phase
X
Y
Z
X
Y
Z
X
Y
Z
X
Y
Z
X
Y
Z
X
Y
Z
X
Y
Z
X
Y
Z
X
Y
Z
Y
Equipment
Convenience outlets, bays 2.1, 2.3, 2.5 and 2.7.
Convenience outlets, bays 2.2, 2.4, 2.6, and 2.8.
Convenience outlets, bays 2.9, 2.11, 2.13 and 2.15.
Convenience outlets, bays 2.10, 2.12, 2.14 and 2.16.
Convenience outlets, bays 2.17 and 2.19.
Convenience outlets, bays 2.18 and 2.20.
Plug strip digital test bay 2.2.
Plug strip digital test bay 2.7.
Plug strip digital test bay 2.12.
6V power supply, plug strip, bay 2.17.
48V power supply No. 1, bay 2.17.
48V power supply No. 2, bay 2.17.
24V power supply No. 1, bay 2.17.
24V power supply No. 2, bay 2.17.
Plug strip VF test, bay 2.20.
Plug strip video monitor, bay 2.18.
Plug strip, bay 2.1, 2.3, 2.5 and 2.9.
Plug strip, bay 2.4, 2.6 and 2.8.
Plug strip, bay 2.11, 2.13, 2.15 and 2.19.
Plug strip, bay 2.10, 2.14 and 2.16.
Duplex receiver,. rack No. 64 and 69.
Wall video circuit.
Philco test set.
Left PTC lights.
Philco Receiver.
Right PTC lights.
Philco transmitter.
Spare.
26C Modem, rack No. 62.
Spare.
supplies. Single phase, 120 volts, 60 Hz AC power is
connected with three wires to all outlets and equipment
listed below.
c. Black AC Power Distribution. All AC power to
the black side of the P&T is connected with 14 AWG
wire, except the two 24 vdc and the two 48 vdc power
Ckt No.
1
2
3
4
5
Amperes
15
15
15
15
15
Phase
X
Y
Z
X
Equipment
Convenience outlets, bays 1.3, 1.7 and 1.9.
Convenience outlets, bays 1.2, 1.4, 1.6 and 1.8.
Convenience outlets, bays 1.11, 1.13, 1.15, 1.17 and 1.19.
Convenience outlets, bays 1.12, 1.14, 1.16, 1.18 and 1.20.
Spare.
2-57
TM 11-5895-878-14&P
Ckt No.
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30-40
Amperes
15
15
15
15
15
30
30
15
15
15
15
15
15
15
15
15
20
15
20
20
15
15
15
15
Phase
X
Y
Z
X
Y
Z
X
Y
Z
X
Y
Z
X
Y
Z
X
Y
Z
X
Y
Z
X
Y
Equipment
Spare.
Station clock plug strip, bay 1.9.
Vf test plug strip, bay 1.5.
Video monitor plug strip, bay 1.8.
6V power supply plug strip, bay 1.17.
48V power supply No. 1, bay 1.11.
48V power supply No. 2, bay 1.11.
24V power supply No. 1, bay 1.16.
24V power supply No. 2, bay 1.16.
Digital test plug strip, bay 1.14.
Digital test plug strip, bay 1.18.
Plug strip, bay 1.3, 1.7, 1.11, 1.19 and 1.21.
Plug strip, bay 1.2, 1.4, 1.6, 1.12, 1.16, and 1.20.
MOLINK Convenience outlet and plug strip, bay 1.24.
MOLINK Convenience outlet and plug strip, bay 1.25.
Plug strip, bay 1.13.
Plug strip, bay 1.15.
DCL Convenience outlet and plug strip, bay 1.22.
DCL Convenience outlet and plug strip, bay 1.23.
TAR-SAC-COM printer door lock & PTC FM tuner.
8.5 corridor ac circuit.
8.5 corridor ac circuit.
Door buzzer.
Typewriter floor outlet.
Spare.
Ckt NO.
8
9
10
11
12
13
14
15
16
2-19. DC Power Systems
(fig. 2-44)
a. General. The P&T has six DC power systems.
Three systems are in the black equipment row (No. 1),
the other three systems are in the red equipment row
(No. 2). The systems provide -48 vdc (b below), 24 vdc
(c below) and 6 vdc (d below).
b. -48 VDC Power Systems. The items that make
up the black power systems are mounted in bay 1.11
(fig. 1-4). The items in the red power system are in bay
2.17 (fig. 1-13). As shown in. figure 2-44A, there are
two power supplies that are parallel connected through
an alarm panel. The power supplies are powered by
120 vac (para 2-17). Each power supply's voltage
output and current drain is indicated on meters that are
on the front of each supply. The dc negative output of
each power supply is fed through an isolation diode in
the alarm panel and then to a fused distribution panel
((1) and (2) below). The alarm panel also provides a
failure alarm output for each power supply to the
associated (black or red) alarm system (para 2-19).
(1) -48 VDC Black Power Distribution. Upon
installation of the P&T the black 48 vdc distribution
panel (fig. 1-4) provided 17 outputs fused with two
ampere fuses. The distribution is as follows:
Ckt NO.
1
2
3
4
5
6
7
Equipment
Digital patch bay 1.12.
Digital patch bay 1.13.
Digital patch bay 1.14.
Digital patch bay 1.15
Digital patch bay 1.16.
Digital patch bay 1.17.
Digital patch bay 1.18.
Digital patch bay 1.19.
Digital patch bay 1.20.
(2) -48 VDC Red Power Distribution. Upon
installation of the P&T the red 48 vdc distribution panel
(fig. 1-13) provides 20 outputs fused with two ampere
fuses. The distribution is as follows:
Ckt NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Equipment
VF patch bay 1.2.
VF patch bay 1.3.
VF patch bay 1.4.
VF patch bay 1.5.
VF patch bay 1.6.
VF patch bay 1.7.
Digital patch bay 1.11.
2-58
Equipment
S I patch bay 2.1.
Digital test bay 2.2.
Digital patch bay 2.3.
Digital patch bay 2.4.
Digital patch bay 2.5.
Digital patch bay 2.6.
Digital patch bay 2.7.
Digital patch bay 2.8.
Digital patch bay 2.9.
Digital patch bay 2.10.
Digital patch bay 2.11.
Digital patch bay 2.12.
Digital patch bay 2.13.
Digital patch bay 2.14.
Digital patch bay 2.15.
Digital patch bay 2.16.
Power bay 2.17.
Video monitor bay 2.18.
VF patch bay 2.19.
VF test bay 2.20.
TM 11-5895-878-14&P
c. 6 and 24 VDC Power Systems. The 6 and 24
vdc power systems are similar to the -48 vdc systems (b
above) with the following differences: (1) The items that
'make up the black system are in bays' 1.16 and 1.17
(figs.1-5 and 1-6); (2) The power supplies do not contain
their own meters, so a meter panel (fig. 2-44B) is
provided. The 6 and 24 vdc output is distributed from
the black and zed fuse distribution panel as given in (1)
and (2) below.
(1) 6 and 24 VDC Black Power Distribution.
Upon installation of the P&T the black 24 vdc
distribution panel (fig. 1-5) provided nine outputs, fused
with five ampere fuses. The 6 vdc outputs are fused
with 0.75 ampere fuses. The distribution is as follows:
Ckt. NO.
1
2
3
4
5
6
7
Ckt. NO.
8
9
Equipment
Digital patch bay 1.20.
Digital patch bay 1.21
(2) 6 and 24 VDC Red Power Distribution.
Upon installation of the P&T the red 24 vdc distribution
panel (fig. 1-13) provides 13 outputs, fused with five
ampere fuses. The distribution is as follows:
Ckt. NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
Equipment
Digital patch bay 1.11.
Digital patch bay 1.12.
Digital patch bay 1.13.
Digital patch bay 1.15.
Digital patch bay 1.16.
Digital patch bay 1.17.
Digital patch bay 1.19.
2-59
Equipment
Digital patch bay 2.1.
Digital patch bay 2.3.
Digital patch bay 2.4.
Digital patch bay 2.5.
Digital patch bay 2.6.
Digital patch bay 2.8.
Digital patch bay 2.9.
Digital patch bay 2.10.
Digital patch bay 2.11.
Digital patch bay 2.13.
Digital patch bay 2.14.
Digital patch bay 2.15.
Digital patch bay 2.16.
TM 11-5895-878-14&P
Figure 2-44. Dc Power Systems, Block Diagram.
60 causes the outage of two equipments performing the
same function. Minor alarms include equipment alarms
where on-line back-up equipment is available. Red
lights on the alarm panels indicate major alarms while
amber lights indicate minor alarms. The major/minor
panel is capable of giving a major or minor alarm
indication on a single pushbutton lamp for a single piece
of equipment. The audible alarm (in the audible alarm
panel) can be silenced by pressing the lighted
pushbutton on the major/minor alarm panel.
The
various alarm circuits are normally open contacts which
provide a ground to the major/minor alarm panel for a
fault indication.
2-20. Alarm Systems
(fig. 2-45)
Two alarm systems (red and black) are provided in the
P&T (a and b below).
a. Red Alarm System.
The alarm system is
designed to alert the technical controller and
maintenance personnel of equipment degradation
and/or failures by giving both an audible and visual
alarm. Equipment covered by this alarm system are DC
distribution and fuse panels and DC power supplies
through their associated alarm panel.
The red
major/minor alarm panel is in bay 2.17 (fig. 1-13). A
major alarm indicates a failure or degradation which 2-
2-60
TM 11-5895-878-14&P
box.
These grounds are jumpered common and
extended to the building ground systems buried
externally. The three grounds are the shield, DC, AC
grounds.
a. AC Ground.
The AC ground is extended
throughout the TCF where it serves the AC ground
requirements as well as bonding all the iron work within
the site to common.
b. Shield Ground. The shield ground is extended
to both the VF and DC IDF's, where it is commonly used
to terminate the shields or armor of cables.
c. DC Ground. The DC ground runs from the
ground box to the power supplies and distribution
boards, where it is distributed to power boxes and alarm
panels throughout the site.
b. Black Alarm System. The black alarm system is
similar to the red system (a above). The major/minor
panel is mounted in bay 1.21 (fig. 1-7). In addition, the
.AU/CCU and station clock alarms are connected into
the system.
2-21. Grounding System
Grounding systems are connected separately to the red
and black equipment and circuits (fig. FO-9). Each
grounding system consists of three separate and
isolated grounds. The shield and DC systems are tied
together only at the station ground box. Each ground
provides a fixed ground reference for the various
equipments and systems within the building. The
grounds are isolated from one another to minimize
ground current loops and, therefore, reduce unequal
ground potentials throughout the site. Each ground
cable is tied to a separate isolated ground bar within the
2-61
TM 11-5895-878-14&P
Figure 2-45. Alarm Systems, Block Diagram.
2-62
TM 11-5895-878-14&P
Figure 2-46. Miscellaneous Patch Panel With 10 Lamps, Schematic Diagram.
2-63
TM 11-5895-878-14&P
CHAPTER 3
STATION OPERATIONS
Section I. OPERATION PRACTICES AND METHODS
of this manual should be made to ensure familiarity with
the facilities provided. Most of the day-today technical
control operations require a thorough understanding of
the complete station.
Rapid response to CCOC
directives can only be accomplished by technical
controllers who have this understanding.
3-1. System Management
a. The Pentagon station is an important part of a
vast, worldwide military communications network
handling voice and electronic data communications. Its
specific operational function in this network is to provide
a wideband relay service and circuit relay service
between other technical control sites, and to provide a
central access point in the Washington, DC area into the
communications network. This mission encompasses
all of those actions necessary to maintain flexibility in
traffic and circuit routing, reliability of through and
terminating circuits, and peak efficiency in transmission
quality.
This capability can be realized only by
employing approved management principles and by
strict adherence to proven standard operating
procedures at all stations.
b. Overall system management direction resides
with the Communications Command Operations Center
(CCOC) and the Defense Communications Agency
(DCA). The discussions which follow are based upon
the facilities provided at the site. Specific operating
procedures will be published by the CCOC, and in case
of conflict between information contained in this manual
and the COC-DCA procedures, the latter will govern.
Although the management of the system resides with
the CCOC, the implementation of the operational
direction, quality of service, and rapid restoration of
service in the event of failure is the responsibility of
each individual operator in the system. Unless there is
thorough cooperation and mutual respect among the
personnel manning the stations, even a perfectly
designed and well managed operation will fail to provide
an effective communications service.
Adequate
facilities are provided at all stations and a management
and control structure is available. The proper use of the
station's facilities and equipment will assure a station
operating capability which is effective, reliable, and
efficient.
3-3. Station Management Facilities and Usage
Effective management and specific assignment of
responsibilities are essential elements for successful
operation of the station. The station design provides the
tools and operational concepts necessary for effective
station management. The effective assignment of
responsibilities by the station manager then depends on
his ability to match the capabilities of operational
personnel to the station machine.
A functional
description of man/machine operational interfaces is
provided here as an aid in this matching process. More
specific operating functions of individual equipments are
described in detail in the equipment technical manuals
and handbooks.
a. Patching Functions. Patching is accomplished
at two areas on site.
(1) Video and Group Interface. The video
and group inputs and outputs are connected directly to
video patch facilities. Rerouting of the multiplexed
groups is readily accomplished at this point by patching.
(2) VF and Digital Channel Interface. Black
and Red circuits are wired to the associated patch bays
in the P&T area. The patching facilities in this area
provide access to the circuits.
b. Monitoring and Testing Functions.
(1) Monitor and Test Point Interface. All VF
and digital jack sets include a monitor jack appearance.
These jacks are arranged to permit monitoring and
testing without interrupting the circuit.
(2) Test Bay Interface. The test bays contain
transmission measuring equipment and other test items
to facilitate maintenance, fault isolation, analysis, and
correction.
c.
Status Reporting and Coordination
Functions. Operating personnel at the station are the
primary users of the supervisory subsystem which
provides orderwire communications. This subsystem
provides communications with other stations as
required. Reporting requirements are established by the
station SOP.
3-2. Station Management Approach
The technical control subsystem has been specifically
designed as the station control center and is equipped to
permit effective station management. All operational
orders, circuit activation and deactivation functions,:
system reporting, alternate routing procedures,
emergency procedures, and any other actions affecting
the operation of this station will be directed to, or
performed by the technical control operators. Much of
the' content of this chapter is therefore addressed
specifically to the station technical controllers and is
intended to be used as a working guide in conjunction
with station SOP's, records, and individual equipment
manuals and handbooks (app A). Since the circuit
configuration is subject to operational changes, a
detailed study of the equipment descriptions in chapter 2
3-4. Duties of the Technical Controller
a. General.
The principal functions of the
technical controller are to monitor, test, and patch, as
required, to ensure operation at peak efficiency and
quality. The technical
3-1
TM 11-5895-878-14&P
controller has access to all circuits entering or leaving
his station by means of the various jackfields in the
patch and test areas. Test equipment is provided in the
test bays. to permit measurement. of levels and circuit
quality. In the course of his duties, the technical
controller frequently has a need to coordinate with, or
assist, maintenance personnel. This requirement occurs
during trouble isolation, patching out equipment for
maintenance, test and analysis, and other similar tasks.
b. Tasks. The technical controller has, as his
responsibility, tasks which are routine, as well as priority,
in nature. A task list is maintained by the technical
controller. Priorities of tasks are assigned, and are
accomplished. in order of priority. Precedence work
tasks may develop from equipment alarms, signal
alarms, fuse alarms, on-call patch, requests from distant
controllers, user complaints, direction from higher
authority, or return of equipment from maintenance.
The tasks of the technical controller are categorized as
follows:
(1) Assign priorities to work task in
accordance with circuit priority and action precedence.
(2) Monitor
station
equipment,
circuit
performance and act on alarms.
(3) Evaluate circuit/equipment status.
(4) Coordinate with. users, other technical
controllers, maintenance personnel, and investigate any
other factors affecting service.
(5) Test and analyze equipment/circuit
capability.
(6) Substitute
facilities/alternate
route
circuits.
(7) Record status.
(8) Report status to affected parties.
(9) Restore facilities after maintenance or
testing.
c. Order of Priority. The technical controller, at the
start of the shift, reviews the previous shift log entries
and receives from the relieved technical controller a list
of tasks, arranged in order of priority, which were not
completed during the preceding shift. The relieving
technical controller proceeds with the accomplishment
of these tasks. When a task is completed, the next
highest priority task is started, or if the list is completed,
routine monitoring of circuits is begun. Any alarm, or
other precedence item, interrupts the routine activity of
the technical controller. Precedence occurrences are as
follows:
(1) Equipment alarm.
(2) Signal alarm.
(3) Request for an on-call patch.
(4) User complaint.
(5) Request for assistance from a distant
technical control.
(6) Direction from a higher authority.
(7) Completion of maintenance activity.
d. Coordination.
The technical controller
investigates all user complaints, cooperates with other
technical controllers in rectifying troubles, and in the
case of problems affecting service, keeps the users
informed of the status of their circuits. A considerable
amount of coordination is required between the
technical controller and station maintenance personnel.
In-station patching during trouble isolation, release to
maintenance, return from maintenance, equipment
substitution, and other similar activities requires
cooperation among operators and maintenance,
technicians. Use of the jackfields and test instruments,
located in the patch and test area, for monitoring and
testing very often requires the assistance of the
maintenance technician to set up the test and analyze
the results. Procedures for patching operations, testing
and monitoring, and some examples of each are
described in the following paragraphs.
Section II. PATCHING OPERATIONS
3-5. Purpose of Patching
Patching is defined as the rearrangement of the
electrical interconnections among items of station
equipment by means of patchcords and jackfields.
a. Service Restoration.
The various patching
facilities provided in the station technical control area
enable the technical controller to take positive action to
restore service when a circuit failure has been localized
to his station. Such restoration action consists of
bypassing the defective equipments and substituting like
equipments from the complement of operational spares
and, similarly, substituting spare, or lower priority,
channels for those degraded or inoperative.
The
substitution of equipment usually involves only a local
patching operation, while substitution of channels
requires a coordinated patching operation at the distant
terminal.
b. Fault Isolation by Substitution, Substitution of
station equipment and channels by patching operations
is a valuable fault isolation technique.
A logical
procedure of successive substitutions of equipment
and/or channels usually locates the fault. Often, it is
possible to patch out all station equipment is one
patching operation, establishing quickly whether the
fault is in any of the local station's equipments. Once a
channel or equipment has been patched out, test
equipment is employed to evaluate circuit performance
and to localize the fault.
c. Service
Continuity
During
Maintenance.
Preventive maintenance routines require periodic quality
control tests (section V) and adjustments of channels
and station equipment. When it is necessary to conduct
such tests on assigned channels or equipments, service
is
maintained
by
a
patching
substitution.
Troubleshooting and corrective maintenance (section III)
requires that the defective equipment be disconnected
from the circuit and a spare substituted.
This
substitution is accomplished by patching.
d. .Operational Spares.
Operational spare
facilities consist of spare multiplex channels and
selected items of equipment cross-connected into
specific spare configurations.
3-2
TM 11-5895-878-14&P
Whenever such spare equipment is available, spare
circuits, which correspond to the DCA options in use at
'he station, may be established to permit rapid
restoration X circuits by in-station patching.
coordinated procedure, the plugs should be
simultaneously pushed all the way into the NORMALTHROUGH jacksets at two locations that constitute the
end of the substitution path.
3-6. Patching Precautions
a. Temporary Measure. The use of patchcords to
set up rearrange circuits is intended as a temporary
measure. Service restoration patches should be taken
down as soon s the fault condition has been corrected.
In some cases, circuit orders may be issued which
specify that patchcords be used to set up or rearrange a
circuit to fill an emergency or temporary requirement.
Such orders may specify, for instance, that circuits be
established without delay by patching, and later be
cross-connected at the IDF to make a permanent
configuration. The patch is to be taken down as soon as
the normal circuit is arranged. The operational objective
is to keep the jackfields as free of patchcords as
possible.
A multiplicity of patches in a jackfield
frequently results in confusion as to the purpose and
authority of the patches, and whether they are still
required. To preclude such confusion, identification tags
should be attached to any patchcord setup which is to
be left in place at the end of the technical controller's
duty shift. The identification tag should contain the
following minimum information:
Circuit number,
terminal locations, using agency, mode of operation,
authority, and time to be taken down.
b. Patching Technique and Sequence.
When
patching -operational circuits, it is essential that
interruption, or service outage resulting from the actual
patching procedure, e kept to an absolute minimum
duration. In most patching operations, it is possible to
limit the effect' on a VF circuit to a momentary click and
on a digital circuit to a few garbled characters. This
minimum effect can be realized, however, only when the
technical controller selects and follows the correct
sequence in inserting the plugs in the jacks. The order
in which this is done is important. Each of the many
possible patching operations must be considered
individually to determine the optimum order of events in
the patching procedure.
Experienced technical
controllers always take a moment to think out the whole
patching procedure before plugging into the jacksets. In
general, the spare or alternate signal path should be set
up first. The plugs should then be loosely set in the
proper NORMAL-THROUGH jacksets, located in the
signal path of the circuit to be transferred. Finally, in a
b. Representative VF Patching Operations.
Objective
Situation
At black patch jackfield Test maintenance substitution
(fig. 2-16), transfer of
of a. spare channel (No. 2)
circuit to spare
for online (No. 5).
channel (Fig. 3-2).
3-7. Reporting Patching Operations
Patching operations which result in reconfiguration of
channels, re-routing of circuits, or cause interruption of
service must generally be reported to higher
headquarters. The specific reporting procedures to be
followed are contained in the current station SOP.
a. Equipment Substitution. No operations reports
are required for the substitution of equipment during
routine maintenance operations. A failure report must
be completed, however, if an equipment failure has
occurred.
b. Group Patching. Except as authorized in the
current SOP, group patches may not be performed at
the site without prior coordination with, and approval of,
the CCOC and/or DCA following completion of the
group patching procedure.
c. Channel Substitution. The CCOC and/or DCA
must be informed when a circuit is transferred to a spare
channel, or to a channel of lower priority circuit. The
notice should specify the time, circuit number, channel
designator, reason, and expected duration of the
rearrangement. This report is normally submitted afterthe-fact, since the technical controller must take
immediate action when patching is required to restore
service. When it is necessary to preempt a lower
priority circuit to obtain a substitution channel, the using
agency must also be informed. When the circuit is
restored, the using agency and higher headquarters
must be notified.
3-8. Patching Operations Conducted at the
VF and Digital Patching Facilities
a. General. The jackfields associated with the VF
patching facilities are used to gain access to signals in
the voice-frequency range (300 to 3400 Hz) and low
level dc circuits for monitoring purposes, and to perform
circuit rerouting, test measurements, level adjustments,
and restoration of service by equipment substitution.
Representative patching operations are given in b
below. The patch panels and jacks used are discussed
in chapter 2. The patching operations are shown in
figures 3-1, 3-2, and 3-3. Install control patches in red
circuits as required.
Procedure
a. Place two patch cord
plugs loosely into channel
No. 2 RECLINE and
TRANS LINE jacks.
b. Place plugs on other end
of patch cords loosely into
channel No. 5 REC
EQUIP and TRANS
EQUIP jacks respectively.
3-3
Notes
a. Identical procedures
required at both terminals
b. Procedures must be
performed
simultaneously.
TM 11-5895-878-14&P
Objective
Situation
Procedure
c. Set all plugs into jacks
simultaneously.
d. Place a 600-ohm term. Plug
in the channel No. 5
TRANS LINE jack.
Notes
At red patch jackfield
(fig. 2-3), transfer of
active circuit to spare
cable pairs (fig. 3-3).
Test maintenance substitution
of spare cable circuit (No. 2)
for the on-line circuit (No. 5).
a. Cable pair change must
be made at local station
and second location before
subscriber equipment
b.
Procedures must be
performed simultaneously
at both locations
At both black and red
patch jackfields (fig. 216), substitution of
crypto
equipment
strings (fig. 3-4).
Test maintenance substitution
of spare crypto equipment
(channel No. 2) for on-line
equipment (channel No. 5).
a. Place two patch cord plugs
loosely into channel No. 2
REC LINE and TRANS LINE
jacks.
b. Place plugs on other end of
patch cords loosely into the
channel No. 5 REC EQUIP and
TRANS
EQUIP
jacks
respectively
c.
Set all plugs into jacks
simultaneously.
a. At black patch bay:
(1) Place two patch cord
plugs loosely into channel No. 5
REC LINE and TRANS LINE
jacks.
(2) Place plugs on other end
of patch cords loosely into
channel No. 2 REC EQUIP and
TRANS
EQUIP
jacks
respectively.
b. At red patch bay:
(1) Place two patch cord
plugs loosely into channel No. 2
REC EQUIP and TRANS
EQUIP jacks.
(2) Place plugs on other end
of patch cords loosely into
Channel No. 5 REC LINE and
TRANS LINE jacks respectively.
c.
Set all plugs in jacks
simultaneously.
d. Place a 600-ohm terminal
plug in the TRANS LINE jack of
channel 2.
3-4
TM 11-5895-878-14&P
Figure 3-1. Transfer of Circuit to Spare Channel.
3-5
TM 11-5895-878-14&P
Figure 3-2. Transfer of Circuit to Spare Cable Pair.
3-6
TM 11-5895-878-14&P
Figure 3-3. Substitution of Equipment.
3-7
TM 11-5895-878-14&P
Section III. TROUBLESHOOTING
the remote stations or the cognizant master station, for
rendering assistance in restoring service.
d. Maintenance Personnel. After faults have been
located and identified, maintenance personnel are
responsible for effecting necessary repairs and
maintenance in accordance with appropriate technical
manuals pertinent to the particular item of faulty
equipment.
3-9. Troubleshooting Responsibilities
a. Technical Controller.
(1) The technical controller at the station
receiving a fault notification is responsible for
determining the source of channels outages or
interruptions, and for the expeditious restoration of
channels to minimize the loss of effective operating
time.
(2) When a degraded condition or other
trouble is encountered at a given station, the technical
controller of that station coordinates with distant
stations, local users, and associated transmitting and
receiving elements in his efforts to isolate and locate the
fault. He has primary responsibility for this action, and
must receive full cooperation from all other station
technical controllers involved. When it is determined
that the fault is located at a distant station, or in a link
serving an area beyond that station, responsibility for
locating and correcting the fault is transferred to, and
assumed by, the station technical controller primarily
concerned.
b. User. The user is responsible for notifying the
responsible technical controller of all instances of
service degradation evidenced by high data error rates,
occasional noise bursts into the voice channels serving
him, or other indications of unsatisfactory conditions.
The user renders free cooperation to the technical
controller in the correction of service degradation.
c. Communications Command Operations Center
(CCOC).
(1) The CCOC monitors the progress of the
station technical controllers in their troubleshooting
efforts, but under normal circumstances, does not
actively engage in the isolation of a fault. If however,
the station technical controllers encounter difficulties
and cannot restore service within a reasonable period of
time, the CCOC is responsible for assuming the overall
direction of the corrective actions, for providing a
workable solution to the problem, and for keeping circuit
outage time to an absolute minimum.
(2) Troubles encountered on multichannel or
multilink circuits often are of an accumulative nature
and present a complicated condition for resolution. To
determine the cause, or causes of such a condition,
special link and segment tests may be required. The
CCOC is responsible for determining the requirements
for such special tests on the basis of station reports.
The CCOC coordinates the tests, collects and analyzes
the results, and directs remedial actions as necessary.
(3) Unless there are definite indications of a
major abnormality the CCOC normally does not take
immediate action to inquire about circuit conditions,
since continuous inquiries by the CCOC impedes the
troubleshooting and fault correction actions of the
station technical controller and maintenance personnel.
The CCOC is responsible, however, for investigating
outages which have not been cleared after a reasonable
period off time, or if no explanation has been made by
3-10. Troubleshooting Practices
a. Fault Notification. Technical controllers are
alerted to actual, or impending circuit outages by means
of alarm indicator displays, by notification from the user
of circuit deterioration or failure by a distant station
technical controller, and as the result of testing and
monitoring.
(1) The supervisory alarm subsystem provides
an alarm when failure occurs in various equipment and
systems at the site, as a CAU, CCU, station clock, fuse
panels, or the dc power system. When alerted to an
abnormal condition by an alarm, the technical controller
and maintenance personnel must perform systematic
step-by-step monitoring, or testing of the system
segments into, through, and out of the station, in order
to isolate the fault(s) to specific areas and/or
equipments.
Once the trouble is defined, faulty
equipment can be repaired, adjusted, or replaced, as
necessary.
(2) In other instances, user service is affected
by degraded circuit conditions. Such conditions do not
activate the supervisory alarms, and consist of sporadic
noise bursts in the circuit data error rates, or incorrect
channel levels. Usually, these problems are brought to
the attention of the technical controller by the user. The
technical controller performs monitoring and testing
routinely, as circumstances permit. However, when
notified of degrading circuit conditions by the user, other
technical controllers, or maintenance personnel,
monitoring and testing of the degraded circuit should be
initiated immediately in order to isolate and correct the
cause of the trouble. For this purpose, the patch bays
(test and monitor jack appearances) located in the Patch
and Test areas, provide a means of sequential access to
circuits and patching of the circuits to the QA test
center.
b. Service Restoration. The technical controller
must use every means at his disposal to restore
disrupted service as expeditiously as possible. These
means, when available, should be used in the following
order of priority:
(1) If a spare channel is available, the
technical controller should patch the user circuit or
group into the spare (figs. 3-1 through 3-3) while
isolating and correcting the defective equipment.
(2) If a fault is identified within an item of
equipment for which a standby or spare is available, the
substitute
3-8
TM 11-5895-878-14&P
equipment should be used to restore disrupted service
while the defective equipment is being restored.
(3) During prolonged, or projected extended
out-ages, the technical controller should request
alternate routing instructions. Rerouting and preempting
is obtained from a list in SOP.
(4) As a last resort, the technical controller
should preempt lower priority circuits in order to restore
service for high priority users. Every circuit, including
switchboard trunks as well as allocated circuits, is
assigned a priority of restoration which must be adhered
to in channel restoration.
Establishment of these
priorities is performed on a worldwide basis by the
Defense Communications Agency.
c. Records and Reports. The technical controller
who first determines that a fault exists or to whom a
fault is reported by a user, is responsible for
coordinating the fault isolation activities with distant
station controllers, and he is responsible for appropriate
log entries and reports. When a fault has been isolated,
an explanation of the nature of the trouble must be
entered in the reporting station log, and the distant
technical controller must be notified so that the entries
for both stations coincide. All circuit outages must be
recorded on the appropriate station logs, regardless of
the duration of the outages time or the cause of the
fault. Specific instructions for reporting of stations are
contained in Standard Operating Procedures. Trouble
reports (work orders) must be prepared for each
equipment or circuit failure. This work order will notify
maintenance of the faulty or substandard equipment.
Only by-strict adherence to this procedure can proper
records be maintained. Prompt, efficient repair of faulty
equipment often depends upon the completeness and
accuracy of the symptoms described on the written work
order.
d. Catastrophic Failure. Normally, the technical
controllers keep the CCOC and DCA informed of
anticipated or existing service failures or degraded
conditions which are beyond the local capability to
restore within a tolerable delay or outage time period. In
an exceptional case, a catastrophic failure condition
may be encountered in which the alarm indicator display
may depict a number of simultaneous alarms or provide
an indication of a second major alarm condition within
the same station before the first alarm has been cleared.
In these cases, the SOC may provide alternate routing
instructions, or other solutions, as applicable.
channel or group is not operating satisfactorily, the
station technical controller proceeds in the following
manner:
(1) He determines if a single channel, a group
of channels, or the entire area is affected.
(2) The controller isolates the area of
malfunction.
(3) He then endeavors to restore service as
quickly as possible by selecting the most expeditious of
the following methods: By substituting in-station spare
equipment of identical configuration by patching to a
spare channel between stations (figs. 3-1 through 3-3)
and/or by requesting that station maintenance personnel
perform the necessary testing and equipment repairs.
(4) In the event that the malfunction involves
a priority channel, and service cannot be restored
expeditiously by the above methods, he preempts a
channel from the lowest priority user by patching.
b. Single Channel. When it is determined that a
single voice channel is unserviceable, the station
technical controller takes the following action:
(1) If the fault notification has been received
from a connected subscriber, the controller should check
the local subscriber loop to determine the serviceability
of the subscriber terminal equipment and of the
transmission facilities between the subscriber and the
station. If it is found to be unserviceable, he should
notify station maintenance personnel.
(2) If the subscriber loop is determined to be
functional, he should check the serviceability of the instation circuit path, including a check made in
conjunction with microwave personnel, of the multiplex
channel modem assigned to the circuit.
If any
component is found to be unserviceable, he should
change cable pairs or request microwave personnel to
restore service.
(3) If the in-station circuit path is determined
to be serviceable, the controller should request that the
technical controller, at the next station where the circuit
appears, check the serviceability of the subscriber
circuit within its station. The fault isolation mission
should be continued, as necessary by coordination with
other technical controllers until the fault has been
isolated and corrected.
(4) If the malfunction occurred at a distant
station or between station, he directs and assists the
distant technical controller in the restoration of the
circuit, as requested.
c. Multichannel. When it is determined that an
entire group of 12 channels or supergroup of 60
channels is unserviceable, the station technical
controller should take the following action:
(1) In conjunction with the station microwave
personnel, he should check the serviceability of the
station multiplex terminal equipment associated with the
affected circuits. If any component is found to be
defective, he should restore service in accordance with
the service restoration guidelines (SOP). In the event
that a spare group or supergroup is not available to
correct the deficiency
3-11. Fault Isolation Procedures
a. General. The technical controller must keep in
mind that the fault isolation procedures which follow
serve only as a guide for efficient technical control
operations and do not represent a rigid sequence of
steps which must be followed to solve a problem. The
site SOP should be adhered to if not in agreement with
the following. The technical controller is urged to
bypass any unnecessary steps in order to achieve the
most expeditious fault location and service restoration.
When an equipment alarm is activated, a fault notice is
received from a user, or routine checks indicate that a
3-9
TM 11-5895-878-14&P
which includes his mux system. He should check other
circuits in the same mux group to determine if the fault
is confined to the circuit under test. If an entire group
proves to be at fault, he should call in maintenance
personnel to check multiplex group equipment, inform
the responsible technical controller and prepare to
coordinate with the station at the other end of the faulty
link. Group patching may be required. If only the circuit
under test is faulty, the responsible technical controller
should be informed that this station is not the fault
source and the isolation procedure should be continued
at points closer to the signal source. He should also
request the station maintenance personnel to check the
channel modem associated with the subscriber circuit.
(2) If noise was not encountered, the fault
then lies in the mux and radio link between the patch
bay at this site and the distant site. This can be
assumed since this distant station would have previously
established that the fault was not in his TCF and the
local technical controller has established that the fault is
in his direction. The station responsible for the circuit
should be informed, maintenance people should be
requested to check the channel modem equipment, and
the controller should prepare to patch around the faulty
channel.
(3) He should standby for notification by
maintenance of the distant technical controller that the
fault has been identified.
(4) If the faulty circuit has not already been
patched A out of service by stations at the distant
terminals, and an extended outage is indicated, he
should assist in patching to a spare mux channel.
(5) Upon notification that the equipment
malfunction has been corrected, he coordinates with
stations involved to restore the circuit to the normalthrough configuration.
(6) He then completes station records, logs,
and trouble reports.
b. Noise Burst on a Local Subscriber Circuit. The
technical controller is notified by a connected (local)
subscriber that frequent noise bursts are being received.
The controller realizes that he is responsible for
coordinating fault isolation procedures at distant stations
which may be involved; however, he first determines if
the fault is in his own TCF. He may decide to
immediately patch to a spare channel by coordinating
with the TCF which originates the signal, depending on
circuit priority and space availability. He should check
the circuit in his P&T area by following a procedure
similar to that below:
(1) The technical controller should attempt to
clear his site and subscriber loop by patching a speaker
panel into the "REC MON" jack of the panel where the
subscriber's circuit enters the P&T from the Mux system.
If the noise is encountered, the fault is at some point
closer to the signal source and away from the
subscriber. It is the local technical controller's duty to
coordinate further
temporarily by patching, and high priority circuits are
disrupted, he should request authority from the CCOC or
DCA to preempt lower priority circuits.
(2) In the event that the malfunction can be
cleared only by corrective maintenance, he should
request that the distant technical controller(s) involved
hold traffic, pending completion of the repairs, and
ensure that all users of the affected circuits are advised
of the temporary disruption of traffic.
(3) If the fault occurred at a distant station, he
should assist the distant technical controller in the
restoration of the circuits, as required.
d. Baseband. When it has been determined that
an entire baseband is unserviceable, the station
technical controller should:
(1) Request that station microwave personnel
check the serviceability of the radio equipment assigned
to the link, and the serviceability of the associated
multiplex terminal equipment.
(2) In the event that the malfunction can be
cleared only by corrective maintenance, he should
immediately contact the (CCOC and DCA and request
rerouting instructions for any high priority circuits that
may be involved.
(3) If the fault occurred at a distant station, he
should assist the distant technical controller in
restoration of the baseband circuits, as required.
3-12. Examples of Voice Channel Fault
Isolation Procedures
There are a number of acceptable methods of isolating
a faulty link in a communications channel.
Two
methods are explained in this paragraph. The first
method (discussed in a and b below) requires the
isolation procedure to begin at the point of fault
recognition.
Each site clears his TCF of any
responsibility for the fault by working in order along the
communication chain. The second method (discussed
in c) allows the responsible TCF to isolate the fault over
the whole communications chain by having his own
signal looped back and tested at various points in
succession along the chain.
a. Noise Burst on Mux Through Circuit. The local
technical controller is notified by a distant technical
controller that noise bursts are being encountered by
one of his local subscribers. He had cleared his station
and wishes the local technical controller to do the same.
Since the circuit is relayed through this P&T, the local
technical controller is responsible for simply checking
the circuit through his site to determine if the fault
source is in his station, reporting back to the distant
station, and correcting the fault, if necessary. The
technical controller could take the following action:
(1) At the Patch Bay electrically closer to the
signal source and away from the complaining
subscriber, he should patch a speaker panel into the
monitor jack of the "LINE REC" appearance of the
circuit. If noise is encountered, the degradation must
originate at some point closer to the signal source,
3-10
TM 11-5895-878-14&P
isolation procedures at other TCF's which handle the
defective circuit.
(2) If the noise is not encountered in (1)
above, then the fault is in the subscriber's terminal
equipment or cable. Maintenance should be notified
and an alternate cable pair should be sought.
(3) If patching was necessary in some leg of
the circuit, the technical controller, upon notification that
the / malfunction has been corrected, coordinates with
technical controllers or subscribers involved to restore
the circuit to the normal-through configuration.
(4) He then completes station records, trouble
reports, and log entries.
c. Fault Isolation of a VF Subscriber Circuit by the
Loop-Back Method. The technical controller is notified
by a local subscriber that the circuit level is not correct.
The technical controller decides to patch the circuit out
of service since a spare is available to the originating
subscriber or switch. The technical controller clears his
own station and then proceeds to isolate the fault, step
by step toward the distant end (toward the end
originating the signal).
The following procedure could be used:
(1) From the subscriber through the local
TCF can be cleared as discussed in b above.
(2) The next TCF toward the signal source
should be notified to loop back the circuit under test.
That distant station patches the 0 dBm Rec to the 0
dBm Send of the same channel under test at the EL
patch bay. When the local technical controller inputs a
1000 Hz test tone on the Send Circuit at a level of 0
dBm, he will receive the same test tone back on that
channel's receive circuit. If the level is correct (0 dBm),
that leg of the channel is cleared. If the level is wrong,
the fault has been isolated between the two TCF's.
(3) If the tone looped back was received at
the proper level of 0 dBm, the distant TCF should be
requested to remove the loop back patch and the next
TCF further toward the signal source should be
requested to perform a similar patch. In this way, the
trouble can be isolated between any two EL patch bays
in the channel.
associated alarm output) to verify that no failure has
occurred in the loop current distribution system serving
the subscriber loop. If a blown fuse alarm is received,
the line should be checked for a short circuit.
(2) Open connection at subscriber terminals.
If no failure in the loop battery supply is detected, the
station technical controller should:
(a) Locate the jack appearances of the
subscriber circuit at the DC Patch bay and patch a
voltmeter into a monitor jack appearance of the
Transmit circuit (Receive circuit of Subscriber) to
measure the loop voltage.
(b) If a zero reading is obtained, by
patching a voltmeter into the subscriber circuit "REC
MON" jack appearance at the DC (Low Level) patch
bay, the technical controller will be checking to
determine that a steady mark condition is not being
received from the VFCT. Refer to maintenance.
(c) If a steady mark indication is
obtained, he should isolate the subscriber loop from the
in-station circuitry by inserting a shorting-type dummy
plug-in the line transmit jack appearance at the DC
Patch Bay. A + 6 vdc will be applied to the line.
(d) If the receiving device continues to
run open, request that user maintenance personnel
check the continuity of the subscriber loop.
(e) Upon verification by maintenance
that the trouble has been located at the subscriber
terminal (for example, an open connection), and has
been corrected, he should ensure that the normal
interface equipment has been returned to the
subscriber's receive channel. Remove the dummy plug
from the line jack appearance at the DC Patch bay to reinstall the subscriber loop into the in-station circuitry.
(f) Complete station records, trouble
reports, and log entries.
(3) Defective cable. The station Technical
Control activity is notified by maintenance that the
failure in the subscriber loop is caused by a break in the
cable between the station and the subscriber location.
The report indicates that the cable will be out of service
for some period of time. The area circuit records have
been reviewed by the station technical controller and
they indicate that an alternate link is not available, or
feasible, between the two locations. He has further
determined that it is not practicable to copy the
incoming traffic at the station for use by the subscriber.
The station technical controller should:
(a) Contact the distant VFCT terminal
and request that the technical controller stop traffic to
the subscriber until the fault has been cleared.
(b) Insert a dummy plug in the line jack
appearance of the subscriber's receive circuit ("Line
Trans" Jack) at the DC Patch bay to isolate the
subscriber loop from the in-station circuitry.
(c) Upon notification by maintenance
personnel that the cable has been repaired, he should
remove the dummy plug from the line jack appearance
at the DC
3-13. Examples of DC Circuit Fault
Isolation Procedures
a. Open Circuit Condition. The station Technical
Control activity is notified by a connected telegraph
subscriber that incoming traffic has been interrupted and
that the page printer has started to run open. Circuit
layout record cards at the station indicate that the
subscriber circuit is connected by cable to a nearby
military installation. The technical controller, based on
his knowledge that a break in the DC loop is the most
likely reason for the condition reported, reasons that the
communications failure could be caused by a failure of
the loop battery, an open connection at the subscriber
terminal, a defect in the cable, or an electrical failure of
the receiving device.
(1) Loop battery check.
The technical
controller should check the appropriate fuse panel (or
3-11
TM 11-5895-878-14&P
Patch Bay.
(6) Upon correcting of the defective channel
equipment, he should coordinate with the distant VFCT
terminal to return the subscriber circuit to the normal
VFCT tone channel by simultaneously removing the
patchcords at both stations (if a spare channel has been
used).
(7) Complete station records, trouble reports,
and' log entries.
c. Failure at Distant Terminal. If no signals are
detected during the check in b(2) above, a failure in the
VFCT system at a distant station is indicated. The
station technical controller should:
(1) Contact the technical controller at the
distant VFCT terminal through the orderwire and request
that he continue the fault isolation procedure through his
station. This procedure should be continued by all
technical controllers involved until the fault has been
isolated.
(2) Upon isolation of the fault at a distant
station, and as requested by the responsible controller,
he should coordinate efforts to restore service to the
subscriber. This may involve a temporary transfer to a
spare channel.
(3) Upon notification that the necessary
repairs have been made, he should assist the distant
technical controller(s) in the restoration of normal
service to the subscriber.
(4) Complete station records, trouble reports,
and log entries.
d. Channel Degradation. The Technical Control
activity is notified by a connected subscriber that a
teletypewriter machine has started to produce garbled
page copy. The report states that the error rate is
serious enough to render incoming messages largely
unintelligible.
(1) Subscriber loop check.
The station
technical controller, upon receipt of this fault notification,
should patch a monitor Teleprinter into a MONITOR jack
appearance of the subscriber receive channel at the DC
Patch bay to determine the quality of the signals passing
through the subscriber loop. (As an alternative, the
technical controller may patch a Distortion Analyzer into
the subscriber circuit at this point to determine the type
of distortion causing the signal degradation). This
information is most useful in many instances in
identifying the origin of a fault condition. Illustrations of
normal and distorted teletype signals are contained in
the instruction manual for the Distortion Analyzer.
(2) Range setting check. If the telegraph
signals are copied without garbling during the subscriber
loop check, the reported fault condition may be caused
by an improper range setting of the subscriber teletype
machine and this should be checked. The station
technical controller should:
(a) Request the subscriber to stand by
for a test transmission to evaluate the adjustment of his
teletype machine.
(d) Notify both the subscriber and the
distant VFCT technical controller that the circuit is ready
for the passing of traffic.
(e) Complete station records, trouble
reports and log entries.
(4) Defective subscriber terminal equipment.
The station Technical Control activity is notified by
maintenance personnel that an electrical failure has
occurred in the page printer at the subscriber terminal.
The station technical controller should:
(a) Insert a dummy plug in the line jack
appearance of the subscriber's receive channel at the
DC Patch bay to isolate the subscriber loop from the instation circuitry.
(b) Upon notification by maintenance
personnel that the equipment failure has been corrected,
he should remove the dummy plug from the line jack
appearance in the Patch bay to restore the subscriber
loop to the in-station circuitry.
(c) Perform a Fox test as required, to
ascertain that the printer is properly adjusted.
(d) Complete stations records, trouble
reports, and log entries.
b. Defective VFCT Channel Equipment.
The
Technical Control activity is notified by a connected
subscriber that service appears to have been interrupted
on his receive circuit. The technical controller initiates
his fault isolation procedures. A zero reading is shown
when a voltmeter is inserted in a monitor jack of the
subscriber receive channel at the DC, (low level) patch
bay. The station technical controller then actuates the
cut-key (if available, if not, inserts a dummy plug) of the
receive channel at the DC bay to apply hold battery to
the loop. To determine if a fault exists in the VFCT
channel equipment, either in the station or at a distant
terminal, the station technical controller should:
(1) Consult the station circuit file and identify
the voice frequency (VF) and tone channel assignments
of the DC subscriber circuit.
(2) Place the selector switch of the Teletype
Carrier Test Set to the designated tone channel, and
connect the unit to the V]F Patch bay "LINE TRANS"
jack serving that channel of the VFCT terminal.
(3) Patch the DC output of the VFCT at the
DC Patch bay either to the Distortion Analyzer Set,
Distortion Test Set or to a Monitor Teleprinter. The jack
appearances are located in. the MISC/INT jackfields of
the DC test bays. If teletype signals are not received at
this point, a failure in the station VFCT channel
equipment is indicated. If the VFCT passes the test
signal, then the fault lies in the VF area or distant
terminal (refer to c below).
(4) Request that station maintenance check
the VFCT channel equipment serving the subscriber
loop.
(5) The technical controller should call the
distant VFCT terminal and coordinate the transfer of the
subscriber circuit to a spare channel (para 3-8) if
required, because of anticipated circuit outage.
3-12
TM 11-5895-878-14&P
unclassified information concerning circuit restoral,
quality control circuit engineering and other information
needed to maintain and build circuit integrity. Voice
orderwire should be used for what they were intended
since the maximum efficiency of the control operation is
through adherence to orderwire procedures.
a. In answering the phone, you say (speaking
assertively) Pentagon Technical Control, Specialist
(give last name) speaking sir, may I help you (unless
otherwise directed by local SOP's).
b. On voice orderwire be courteous, speak slowly
and enunciate clearly. These simple practices will
alleviate unnecessary and costly (both in time and
money) call backs to better explain the problem or to
correct misunderstandings. Always close with your
initials or call sign and request the same from the party
you are speaking to. This last practice might someday
protect you from personal error.
(b) Patch the Pattern Generator output
(EST MESSAGE jack) into the LINE jack appearance of
the subscriber receive circuit at the DC patch bay, and
transmit the Fox test message to the subscriber station.
The range control of the subscriber teletype machine
should be adjusted by maintenance personnel to the
midpoint of the range over which perfect page copy is
obtained.
(c) Upon correction of the reported fault
condition, he should complete station records, trouble
reports, and log entries.
3-14. Orderwire Procedures
Effective operation of DCS Transmission facilities
requires frequent coordination between Technical
Control Facilities. The voice orderwire, the telephone
and the intercom system to the various users
maintenance personnel are used to rapidly disseminate
Section IV. IMPLEMENTATION OF COMMUNICATIONS SERVICES REQUIREMENTS
3-15. Origination of Requirements
Communications services requirements can be
originated at any command level, but must be
coordinated with, and approved by the command
echelon responsible for the operation of the system, or
at the level exercising control over the communications
facilities in a particular area.
Communications
requirements affecting the Pentagon station are
determined by DCA, processed through ACC and are
implemented under the direction and supervision of
ACC.
identifying the circuitry, channels, links, jacks, IDF
connections, panels and equipments used. The stations
must also forward all detailed record data needed by
DCA and ACC to keep the system records completely
current at all times.
c. The cross-connect instructions that constitute a
Circuit Order are issued directly to the stations
concerned, by the agency responsible for circuit design
and channel allocation. ACC, however, must receive an
information or record copy and has overall responsibility
for the correct implementation of the Circuit Orders.
ACC furnishes technical advice to the stations, upon
request, and directs the stations in testing newly
established or rearranged circuits. It also maintains
centralized records of equipment assignments, cable
pairs, channelization, routing, and complete statistical
data on the entire system operation.
3-16. Circuit Activation
When a request for circuit activation is initiated, all
known or determinable data pertaining to the service
requirement normally accompanies the request. This
data will include the applicable items of circuit priority,
type of service required, number and locations of
subscribers or extensions involved, circuit time element
(full time, part time common user, trunk tributary), and
desired activation date.
a. Upon receipt of the activation order, ACC, from
records on hand, determines: Any technical
requirements which must be satisfied; the stations
enroute; and types and amounts of equipments or
materials involved. Depending upon time availability
prior to the activation date, ACC processes the
activation order to the appropriate station or unit
concerned, either by normal administrative distribution
or over the teletype orderwire facilities.
b. Each station supervisor verifies that the order is
applicable to his station and schedules the work to
completion. At the indicated time, station personnel
install the required cross-connections at the IDF and
associated equipments, and adjust appropriate patches,
controls and equipments to optimum operating
efficiency. As soon as the circuits are aligned and in
operation, the stations complete in-station records
3-1 7. Circuit Deactivation
At such time as requirements for a particular
communications service no longer exists, the circuits,
channels, equipments and facilities employed in
providing that service are deactivated, and a status
change of the facilities and equipments involved is
entered on all applicable records.
Normally, the
termination of requirements is foreseen in sufficient time
that the deactivation requests and orders can be
scheduled for inclusion in the normal system workload.
The sequence of authority for circuit deactivation is the
same as for establishing new services. ACC issues the
termination orders to include dates, times, and facilities
or equipments involved. The station supervisor includes
the work in appropriate work schedules and, on
completion, all station records are updated and a
detailed report forwarded to ACC. ACC records are
then updated and all of the required change information
which is included in the station report is forwarded
3-13
TM 11-5895-878-14&P
or portion of the circuit or system. The magnitude of
failure will determine the degree of emergency attached
to each service interruption. A majority of the service
troubles encountered can be attributed to failure of a
minor item of in-station equipment; in this case, the
station personnel are able to restore service
expeditiously by patching in spare equipment or
components. As soon as maintenance personnel repair
or replace the failed items, the circuit is restored to its
normal path. All troubles must be logged and reported,
but the use of installed spares need not be coordinated
with ACC prior to getting the circuits back in service.
Any nonpatching type rerouting actions required to
restore service to less than highest priority critical
circuits must be first coordinated with or have the
approval of DCA or ACC.
c. Catastrophic Failures.
The failure of link
equipment, transmitters or multichannel equipments
involving critical highest priority circuitry, either by error
or intent of man, or by natural forces, are considered
catastrophic failures. Under these conditions, the
restoration of service to critical and high priority circuits
is of paramount importance. Of equal importance at this
time is the need to notify ACC of the failure event, the
point of failure, extent of damage, estimate of work,
equipment, and time involved in correcting the failure,
and what has been done or is being done to restore
service.
Station supervisors and station technical
controllers immediately take action to reroute
predetermined critical and high priority circuits to the
maximum degree possible over available spares
wherever alternate routing links are available. As
services are restored, DCA and ACC are notified. DCA
or ACC evaluates initial reports and all subsequent
status reports and initiates necessary instructions to
station supervisors and technical controllers detailing
additional circuits to be rerouted and routes to be used.
DCA or ACC also indicates which, if any, lesser priority
circuits will be preempted in order to maintain a
maximum service balance throughout the entire system
until the failures can be completely restored to normal
service.
to the command headquarters, and/or high command
echelons, as directed.
3-18. Circuit Rerouting
Circuit rerouting is normally accomplished on a planned
(scheduled) basis on orders from DCA or ACC. System
planning and growth, circuit priorities, link or equipments
reliability, subscriber population density, party line or
command net configurations, and system maintenance
may be major system operating factors which generate
circuit rerouting requirements. In addition, system or
equipment failures may necessitate emergency circuit
rerouting.
a. Normal Circuit Rerouting. All normal circuit
rerouting requirements are determined by ACC or higher
authority and are primarily based on satisfying customer
demands or improving communication services in a
particular area of the system. In the latter case, the
determination or requirement is the result of study and
analysis of system operating and service conditions.
The information is taken from the daily technical control
and maintenance logs and reports which are submitted
by all stations to satisfy system operating statistics, and
record requirements at ACC and/or higher headquarters.
When a normal circuit rerouting requirements is
established, ACC issues the work directive which
combines the information needed for a circuit activation
and a circuit deactivation. The station supervisors verify
the details of the directive, check that all required
equipments and/or facilities are available for use, and
schedule the work for completion. As soon as the work
is completed, and the circuit verified in service, the
station records are updated and details promptly
forwarded to ACC in order that the system master files
and records can be maintained current at all times.
b. Emergency Circuit Rerouting.
Any circuit
rerouting necessitated by system, equipment, or
facilities failure can be identified as an emergency
requirement.
Emergency circuit rerouting is
accomplished, insofar as possible, by temporary cord,
plug and jack patching arrangements at or through the
Technical Control Facility using installed spare
equipments or channels to bypass the failed equip ment
Section V. QUALITY CONTROL TESTING
composite signal transmission level test will be run in
service. The total peak distortion test may be run inservice or out-of-service.
(2) Out-of-Service Quality Checks. Out-ofservice checks require the release of the circuit by the
user. These checks verify the technical parameters of
the circuit end-to-end. The procedures used to make
out of service quality checks are the same as those
used when DCA circuits are activated.
(3) Communications Equipment.
Quality
control testing is require on all operational and spare
communications equipment and should be conducted on
a regularly
3-19. Introduction
a. In order to meet the requirements of the DCA
and provide effective service, the technical control
facility must be operated and maintained in peak
operating condition.
b. In order to maintain the TCF in peak condition,
in-service quality checks, out-of-service quality checks,
and communications equipment checks should be
performed on a regularly scheduled basis.
(1) In-Service Quality Checks.
In-service
checks are made on all channels within the P&T.
Measurements are made on a high impedance bridging
basis that will not effect user service.
Only the
3-14
TM 11-5895-878-14&P
scheduled basis.
These tests are located in the
manufacturers' technical manuals.
c. Failing Circuits. If circuits fail to meet the
required, specifications during a test, the deficiency
should be located and corrected as soon as traffic
conditions warrant interruption of the circuit for the
required period
3-20. Testing Procedures
a. Quality Assurance tests should be made in
accordance with the latest DCA QA testing schedule.
b. Patch the circuit to be tested to the QA test
center via the Interbay trunking system (para 2-16).
c. Perform testing as given in DCA circulars listed
in appendix A.
3-15
TM 11-5895-878-14&P
CHAPTER 4
MAINTENANCE
Section I. ORGANIZATION MAINTENANCE, GENERAL
4-1. Scope of Organization Maintenance
This
chapter
contains
instructions
covering
organizational maintenance of the P&T. It includes the
following functions:
a. Daily and weekly preventive maintenance
checks and services (para 4-5).
b. Monthly preventive maintenance checks and
services (para 4-6).
c. Quarterly preventive maintenance checks and
services (para 4-7).
d. Cleaning (para 4-8).
e. Touchup painting (para 4-9).
f. Building and changing circuits (paras 4-10
through 4-12).
g. Troubleshooting permanently connected circuits
and equipment (sec IV).
4-2. Tools, Materials, and Test Equipment
Required for Organizational Maintenance
a. Tools. Tool kit, Weco # 168.
b. Materials.
(1) Lint-free cloth.
(2) Lubricating
oil,
general
purpose,
preservative (PL Special) (NSN 9150-00-185-0629).
(3) Fine sandpaper, No. 000.
(4) Tile panel lifter.
c. Test Equipment.
(1) All rack mounted test equipment listed in
appendix C.
(2) Multimeter, Simpson 260.
Section II. PREVENTIVE MAINTENANCE PROCEDURES
4-3. Preventive Maintenance
Preventive maintenance is the systematic care,
inspection, and servicing of equipment to maintain it in
serviceable condition and assure maximum operational
capability. Preventive maintenance is the responsibility
of the P&T maintenance NCOIC and maintenance
personnel.
a. Systematic Care. The procedures given in
paragraphs 4-4, 4-5, 4-6, and 4-7 cover routine
systematic care and cleaning essential to proper upkeep
and operation of the equipment.
b. Preventive Maintenance Checks and Services.
The preventive maintenance checks and service charts
(para 4-5 through 4-7) outline functions to be performed
at specific intervals (para 4-4). These checks and
services are to maintain equipment in good general
(physical) condition and in good operating condition. To
assist maintenance personnel in maintaining the
equipment in peak condition, the charts indicate what to
check, how to check, and the normal conditions. The
reference column lists the paragraphs or manuals that
contain detailed repair or replacement procedures. If a
defect is noted that cannot be remedied by the TCF
maintenance personnel, a higher category of
maintenance or repair is required.
a. Patch and Test Facility (Daily)
Sequence No.
Item to be inspected
1
Alarms and lamps.
4-4. Preventive Maintenance Checks and
Service Periods
Preventive maintenance checks and services of the
TCF are required on a daily, weekly, monthly, and
quarterly basis unless otherwise directed by the station
commander.
a. Paragraph 4-5 specifies checks and services
that must be accomplished weekly and under the special
conditions listed below.
(1) When the equipment is initially installed.
(2) When the equipment is reinstalled after
removal for any reason.
(3) At least once each month if the equipment
is maintained in standby condition.
b. Paragraphs 4-6 and 4-7 specifies additional
maintenance checks and services that must be
performed monthly and quarterly respectively.
4-5. Daily and Weekly Preventive
Maintenance Checks and Service Charts
Perform the maintenance functions indicated in the daily
and weekly preventive maintenance checks and service
charts below daily and weekly respectively. Adjustment
of the maintenance interval must be made to
compensate for any unusual operating conditions.
Procedure
Press test button on alarm panels.
4-1
References
TM 11-5895-878-14&P
b. Patch and Test Facility (Weekly).
Sequence No.
Item to be inspected
1
Grounding system.
Procedure
Verify that the grounding system is properly installed
with good electrical
connections throughout.
2
Cables, wires, and cords.
Remove dirt from cable insulation and connections.
Tighten loose connections at all accessible connectors
and jacks.
3
Lighting system.
Replace defective lamps.
4
Walls, ceilings, and floors. Report any discrepancies to Post Maintenance.
c. Equipment Racks, Equipment, and Power Distribution Panel (Weekly).
Sequence No.
Item to be inspected
Procedure
1
Cleanliness.
Remove dirt, dust, and other foreign matter from all
exposed exterior surfaces.
2
3
4
Connectors.
Mounting.
Operation.
5
Lamps.
References
None.
Para 4-8.
None.
None.
Check cables and connectors for secure fit.
Check to be sure that the units are securely mounted.
During normal operation, observe that the mechanical
action of each switch
and control is smooth and free of binding.
Check all indicating lamps. Replace defective lamps.
References
Para 4-8.
None.
None.
None.
App A.
maintenance interval must be made to compensate for
any unusual operating conditions.
Equipment
maintained in a standby condition must have monthly
preventive checks and service. Equipment in limited
storage requires services before operation but not daily
and weekly preventive maintenance.
4-6. Monthly Preventive Maintenance
Checks and Service Charts
Perform the maintenance functions indicated in the
monthly preventive maintenance checks and service
chart below once each month. A month is defined as
approximately 30 calendar days. Adjustment of the
a. Patch and Test Facility (Monthly).
Sequence NO.
Item to be inspected
1
Grounding system.
2
Movable parts.
3
Cables, wires, and cords.
4
Electrical system conduits and
5
Equipment mountings.
6
Fuses.
Procedure
Verify the station grounding system is adequately
throughout.
Check all hinges, latches, and metal to metal
sary:
a. Clean and paint bare metal parts.
b. Tighten loose screws, nuts, and bolts.
c. Lubricate.
d. Clean. all air filters.
a. Tighten screws, clamps, and nuts that secure
b.
Repair insulation cuts and abrasions with
tape.
Tighten loose screws, bolts, and clips. Repair or
switches, switchplates, outlets, and receptacles.
a. Tighten all loose bolts, nuts, screws, and clamps
equipment racks, frames, shelves, braces, and
ware. Replace missing hardware.
b. Check to see that equipment mounting racks,
braces, and clamps are not bent, broken, or out of
danger equipment or personnel.
Check fuses at fuse panel and equipment. Replace
Verify that all operating fuses are of the correct
fuses for proper value and quantity.
References
None.
Para 4-8
Para 4-9.
a. None.
b. None.
None.
None.
None.
Para 2-18.
Quarterly preventive maintenance checks are required
on the P&T. Periodic, daily, weekly and monthly
services constitute a part of the quarterly preventive
maintenance checks and services and must be
performed concurrently. All deficiencies will be recorded
and corrected.
b. Equipment (Monthly). Perform periodic checks
and services on each equipment in the facility (App A).
4-7. Quarterly Preventive Maintenance
Checks and Service Charts
4-2
TM 11-5895-878-14&P
a. Patch and Test Facility (Quarterly).
Sequence NO.
Item to be inspected
Procedure
1
Publications.
Check to see that all publications are complete,
rent.
2
Mounting.
Verify that all bolts, nuts, and washers are correctly
properly tightened. Check for cracked, bent, or broken
3
Spare parts.
Check all spare parts for general condition and method of
There should be no evidence of overstock, and all
on requisition.
4
Power supplies.
Remove power and dust inside.
References
None.
None.
App A.
Manufacturer's
b. Equipment.
1
2
Sequence NO.
Item to be inspected
Completeness.
Preservation.
3
Connections.
4
Pluck-out items.
5
Knobs, dials, and switches.
Procedure
See that the equipment is complete.
Check all surfaces for evidence of fungus. Remove rust
bare spots.
Verify that plugs, sockets, and jacks are clean, intact,
Intact, and not loose fitting.
Inspect clamps and seating of pluckout items. Check for
Check for wrong, bent, or broken parts.
While making the operating checks, observe that the
mechanical action of each knob, dial and switch is
is smooth and free of external or internal binding.
4-8. Cleaning
a. Remove dust and loose dirt from the exterior
surfaces with a clean soft cloth.
WARNING
The fumes of TRICHLOROETHANE
are
toxic.
Provide
thorough
ventilation whenever it is used; avoid
prolonged or repeated breathing of
vapor. Do not use near an open
flame or hot surface; trichloroethane
is nonflammable but heat converts
the fumes to a highly toxic phosgene
gas. The inhalation of this gas could
result in serious injury or DEATH.
Prolonged or repeated skin contact
with trichloroethane can cause skin
inflammation. When necessary, use
gloves, sleeves and aprons which
the solvent cannot penetrate.
b. Remove grease, fungus, and ground-in dirt from
the equipment. Use a cloth dampened (not wet) with
trichloroethane.
CAUTION
Do not press on the indicator face
(glass) when cleaning; the indicator
may be damaged.
c. Clean indicator glass; use a soft clean cloth.. If
difficulty in removing dirt occurs, dampen the cloth with
water. Mild soap may be used to make cleaning more
effective.
d. A panel lifter furnished with the raised floor and
supplied by Liskey Aluminum Inc. is used to gain
References
App A.
Para 4-8.
None.
None.
None.
access to the crawl space under the floor for cleaning
and repair.
4-9. Touchup Painting Instructions
When the finish on the exterior of the equipment has
been scarred or damaged, corrosion may be prevented
by touching up the surfaces as follows:
a. Refer to Federal Standard No. 595a for a
matching color. SB 11-573 lists painting tools and
miscellaneous supplies required for painting.
b. Refer to TB 43-0118 for instructions on-painting
and preserving Electronics Command equipment.
When touchup painting, a perfect match with the original
paint surface may not be possible, because of a change
in the original pigment as a result of oxidation and
differences in manufacture. The prevention of corrosion
and deterioration is the. most important consideration in
touchup painting; appearance is secondary. However,
this does not mean that appearance of the equipment is
not important Touchup painting should be accomplished
neatly and competently. Inspection personnel in the
field should make allowances for slight color mismatch
where minor touchup has been done, but not for neglect,
unskillful manner, or in cases where the need for
refinishing is obvious.
c. Use No. 000 sandpaper to clean the surface
down to the bare metal; obtain a bright clean finish.
Sand the area back to solid paint and feather the paint
edge that leads to exposed metal. Wipe the area clean.
d. Apply to the bare metal surface one coat of zinc
chromate metal primer, and two thin finish coats of the
matching color enamel.
Section III. BUILDING AND CHANGING CIRCUITS
4-10. Telecommunications Service Orders' (TSO's)
The basic circuit design information for all new or
changed
circuits
is
provided
in
DCA
Telecommunications Service Orders (TSO's). The TSO
is the authorization from DCA Headquarters or a DCA
area to activate, change, or deactivate
4-3
TM 11-5895-878-14&P
circuits or trunks; to amend previously issued TSO's,
and to effect administrative changes. The TSO gives
the following information:
a. Issuing office.
b. The year it is issued.
c. TSO serial number.
d. Circuit identification.
e. The sequential action being taken on the circuit.
(1) Coordinating the restoration of assigned circuits
to include coordination with the appropriate DOCC
element when rerouting of a circuit is necessary to
restore j service.
(2) Directing the troubleshooting effort when
necessary to clear the trouble of the disrupted segment.
(3) Reviewing the record of temporary path
changes on a regular basis and taking action to have the
regular path restored.
(4) Keeping the appropriate DOCC and O&M
elements, subscriber, and concerned TCF's advised of
the progress of restoration work or of any conditions that
may effect service availability.
(5) Establishing procedures for handling and
recording service interruptions.
(6) Bringing unsatisfactory conditions which
are beyond the authority or capabilities of the TCF to the
attention of the appropriate DOCC and O&M element.
d. As an intermediate TCF, the Pentagon P&T is
responsible for:
(1) Ensuring timely completion of all actions
required to activate, change, or deactivate circuits
terminating in or passing through the station.
(2) Restore or reroute disrupted circuits over
available facilities on the basis of the predetermined
National Communications System (NCS) restoration
priority. The technical control that first becomes aware
of the outage is responsible for initiating the restoration
and the follow through actions concerning the
restoration until service is restored.
(3) Reporting to the DOCC all information
required concerning an outage in accordance with
reporting procedures in the appropriate DCA directive.
(4) Review the record of the temporary path
changes on a regular basis, and take the necessary
steps to restore the regular path. Take action to remove
locally authorized circuits promptly and consult with the
appropriate control concerning action on other patches.
(5) Notify the circuit control office when a
circuit has been materially altered or routed over a new
path or restored after a prolonged outage (e.g. 72
hours) in order that the circuit can be retested end-toend.
(6) Respond to the technical supervision of
the Facilities Control Office (FCO), SCCO, or
Intermediate Control Office (ICO) in all matters
concerning the fault location, rerouting, and restoration
of the circuit.
(7) Activate on-call and overload circuits in
accordance with established procedures.
(8) Review the facility and equipment
situation periodically and make recommendations for
beneficial changes. This includes any facilities and
equipment that becomes available when service is
discontinued.
(9) Publish and post notices as appropriate to
technical controllers. These notices will contain the
following information:
(a) Additions, deletions, or changes in circuitry.
4-11. Patch and Test Facilities
a. In order to effect the very close coordination
required to activate circuits in the DCS, the P&T may be
assigned the responsibility for activating a circuit from
end-to-end (circuit control office (CCO)) or only as an
intermediate DCS station TCF with the responsibility for
coordinating all action necessary to activate the circuit
within the TCF.
b. The Circuit Control Office (CCO) or Special
Circuit Control Office (SCCO) is designated by the DCA
Circuit Engineering office on each TSO.
When
designed as the CCO of a circuit, the TCF has the
following responsibilities:
(1) Scheduling and coordinating activation of
the circuit, out-of-service quality control testing, and all
other actions of the TSO for the life of the circuit.
(2) Ensure that each TCF, PTC, user
terminal, and commercial agency involved is ready to
provide the required service 72 hours prior to the
service date.
(3) Complete overall line-up test, direct
necessary adjustments, and ascertain that the circuit
meets the specified technical schedule before
acceptance.
(4) Advise the appropriate DCA Operations
Control Complex (DC)CC) and Operation and
Maintenance (O&M) element of any conditions,
incomplete line-ups, or exceptions which might affect
service. This would include such as operating a through
circuit for terminal use only or operating with one-way
transmission capability on a normal two-way circuit.
(5) Prepare and implement out-of-service
quality control test schedules for routine testing in
harmony with traffic conditions and user requirements.
(6) Record and file the required test
summary.
(7) Initiate localization and correction of
trouble that is discovered during the quality control tests.
(8) Test or coordinate testing of any circuit,
end-to-end, that has been materially altered or rerouted
over a new path or restored after an extended outage
(e.g. 72 hours).
(9) Ensure that all TCF's on the circuit patch
are advised to take down patches and cross-connects
when a circuit is discontinued.
(10) Report immediately to the appropriate
DOCC element all instances of negative or untimely
response from patch and test facilities, TCF's, or
commercial agencies during circuit activation.
c. In addition to the functional responsibilities of a
CCO, the SCCO is responsible for:
4-4
TM 11-5895-878-14&P
NOTE
Refer to site cable run drawings for
IDF to equipment cabling details.
b. Change cross-connection or make new
connections on the associated IDF's (paras 2-3 through
2-9) to obtain the desired jack appearances and mux,
cable or VFCT assignments as necessary.
c. Record cross-connections on circuit record card.
d. Perform the necessary in-house equipment
tests.
e. Remove patches or plugs installed in (a) above.
f. Perform the necessary QA station-to-station
tests (para 3-20).
(b) Special tests on circuits or equipment.
(c) Changes in frequency assignments.
(10) Advise the CCO, SCCO, or ICO when:
(a) Any circuit has been restored or rerouted
over new facilities and must be tested from end-to-end.
(b) A service will not be able to start on date
and time specified in the TSO.
4-12. Procedure for Changing and Building Circuits
a. Patch around the in-house portion of the
existing circuit (fig. 3-4), or terminate the circuit legs on
the line side of the patch panels with 600 ohm terminal
plugs.
Section IV. TROUBLESHOOTING PERMANENTLY CONNECTED CIRCUITS AND EQUIPMENT
refer to the "Trouble Symptom" column in the chart.
Perform the checks and corrective measures indicated
in the "Check and Corrective Maintenance" column to
locate and clear the trouble.
4-13. Use of Troubleshooting Charts
Troubleshooting of this facility is based upon
malfunctions that may occur during normal operation of
the equipment in the system. When a trouble occurs,
4-14. Troubleshooting Chart, Major/Minor Alarm Panel
(fig. 4-1)
Item
Trouble Symptom
1
No audible tone from audible
alarm panel with a Tellite
Illumination.
Probable trouble
a. Tellite has been depressed, locking
out audible tone.
b. Gnd from alarm panel not being extended to audible alarm panel.
c. Gnd not being extended through
alarm panel.
Check and corrective maintenance
a. Check for trouble as indicated by
Tellite.
b. Remove the appropriate cross-connect.
from IDF and check for ground from
alarm panel output on the IDF block.
(1) If ground is found, check for -48 vdc
on the audible alarm input lead. If
battery is not present replace the
patch and check the operation of
the audible alarm panel (para 4-17).
(2) If no ground is found, remove the
connector from rear of alarm panel.
Make a continuity check from pin 91
of the connector (cable end) to the
IDF. After check is satisfactorily
completed, replace the crossconnection patch cord.
c. If no ground is found on pin 91 it will
be necessary to remove the alarm
panel from the bay to allow access
to the component parts. With the
top and bottom covers removed
make a continuity check, using a
VOM TS-352 or equal, from the pin
number that corresponds to the
illuminated lamp to Tellite pins NC1
and COM1. Refer to appendix D,
symbol number SW3, for Tellite
location. If continuity is obtained on
COM1 but not NC1 this indicates a
defective Tellite.
NOTE Care must be taken to
ensure that the (+) lead of the VOM
is connected to the corresponding
pin 1-45. This will forward bias the
diode in the circuit thus ensuring a
valid VOM reading.
4-5
TM 11-5895-878-14&P
Item
Trouble Symptom
Probable trouble
Check and corrective maintenance
If continuity is not obtained at either NC1
or COM1, check associated diode.
Refer to appendix D, symbol CR1, for
parts location.
2
Audible tone from audible
alarm panel without any
indication on alarm panel
Defective lamp.
a. Depress switch SW1 and then SW2.
All Tellites should glow. If any Tellite
fails to illuminate, replace bulbs.
b. If all Tellites fail, check circuit
breakers (CB1) located on front panel
(reset if found deactivated).
3
Equipment is known to be in
an alarm condition with
no alarm indication given.
Gnd not being extended from
equipment to alarm panel.
Remove the appropriate patch from IDF
and check for gnd on the lead coming
from the defective equipment. If ground
is not present, check for open circuit
working toward defective equipment. If
ground is found, replace the jumper and
remove connector from rear of alarm
panel. Check appropriate pin number
(1 through 90), on the cable connector,
assigned to extend ground from the
defective equipment to the alarm panel.
If ground is not present, make a
continuity check from the connector to
the IDF block. After the check is
satisfactorily completed, replace the
IDF patch.
4
Audible: alarm interrupted only
while Tellite is depressed.
Tellite hold coil open.
In order to check the Tellite coil, it will
be necessary to remove the panel from
the bay to gain access to the
component parts. With the top and
bottom covers removed, a reading of
approximately 340 ohms across pins 4.
and 5 indicates a good coil while an
open reading will require the
replacement of the Tellite.
4-6
TM 11-5895-878-14&P
Figure 4-1. Major/Minor Alarm System, Schematic Diagram.
4-15. Troubleshooting Chart, Universal Alarm Panel
(fig. 4-2)
Item
1
Trouble Symptom
Probable trouble
Audible tone sounding with.
L1 illuminated
Check and corrective maintenance
(1) Check the input terminal of CR1 for
supply voltage.
a. Power Supply No. 1 failure.
4-7
a. If voltage is not found, check the
associated power supply for output
voltage.
TM 11-5895-878-14&P
Item
2
Trouble Symptom
No audible alarm when a
power supply is known to be
defective.
Probable trouble
Check and corrective maintenance
b. K1 relay coil open.
b. If voltage is found on the CR1 terminal,
check K1 relay for a possible open coil
Use a multimeter set on the 1000 scale,
check the coil relay of K1. An ohm
reading of approximately 700 ohms is
normal. It will be necessary to ensure
that the voltage is removed from K1
before making this check.
a. CR1 shorted.
a. Use a multimeter, adjusted to 10 scale,
reverse bias CR1. This test should
show to an open circuit. Any reading
on the multimeter will indicate a
defective diode.
b. Ground not being extended through
K1 contacts.
b. See (1) and (2) below.;
(1) Check TB 1 pin 1 for signal ground.
This ground is extended to the
Power Supply Alarm panel from the
distribution panel.
(2) Check K1 relay contacts 5 and 6 for
continuity by checking for ground of
contacts 5 and 6. If ground is found
on 5 but not 6 the contacts need to
be burnished and adjusted in
accordance with manufacturer's
specifications.
3
Audible Alarm sounding without L1 being illuminated.
a. Lamp L1 burned out.
b. Ground not being extended through
K1 relay contacts.
a. Using a lamp extractor tool (WECO
553A or equal) remove L1 from its
socket and check for continuity, using
a multimeter adjusted to the 10 scale.
b. Remove the wire frame TB1 pin 5.
Check K1 relay contact pins 8 and 9 for
ground. If ground is found on pin 8 but
not 9 the contacts need to be burnished
and adjusted in accordance with
manufacturer's specifications.
Circuit Number -two on this panel can be checked in a manner similar to 1, 2, and 3 above.
4-8
TM 11-5895-878-14&P
Figure 4-2. Universal Alarm Panel, Schematic Diagram
4-16. Troubleshooting Chart, CAU/CCU Alarm Panel
(fig. 4-3)
Item
1
Trouble Symptom
No alarm (gnd) output with
a known alarm signal on
TB1 or TB3.
Probable trouble
Check and corrective maintenance
a. Loss of 120 VAC input power.
a. Check for 120 vac at TB2 terminals 3
and 4 and at the 6 vdc power supply.
Apply power to unit or repair wiring as
required.
b. Ground not connected to panel.
b. Check for ground potential at terminal 2
of TB2. Repair wiring as required.
4-9
TM 11-5895-878-14&P
Item
2
Trouble Symptom
No alarm (gnd) output with
known alarm signal on TB1.
Probable trouble
Check and corrective maintenance
c. Defective Major/Minor or Audible
Alarm panel.
c. Check Alarm Panels (paras 2-14 and
2-17).
d. Defective 6 vdc power supply.
d. Remove panel from rack and check for
+ and-6 vdc outputs from power supply.
Replace defective power supply.
a. Ground alarm signal not applied to Ma- a. Check for ground at CAU alarm signal
jor/Minor Alarm panel.
output at terminal 1 of TB2. If ground is.
present, check at assigned pin on Major/Minor Alarm Panel. If ground is not
at Major/Minor Alarm Panel, check and
repair circuit wiring.
b. Defective Major/Minor Alarm Panel.
b. If ground is found on the circuit input
pin, check the Major/Minor Alarm Panel
circuit (para 2-14).
c. Defective diode CB21 through CB40.
c. Replace defective diode.
d. Defective relay K2.
d. Remove relay K2 and substitute a
known good relay. Replace a defective
relay.
e. Defective resistor R4.
e. Disconnect power from panel and check
resistance of R4. Replace and open
resistor or one that has a high
resistance.
f. Defective transistor Q2.
f. With power disconnected, remove relay
K2 from its socket. Check transistor Q2
with ohmmeter. Replace defective
transistor.
3
No alarm (gnd) output with
known alarm signal on TB3.
Same as item 2 above, with trouble in Q1 Same as item 2 above. Check for ground
circuit components and exterior circuit.
at CCU alarm signal output at terminal
5 of TB2. Check diodes CR1 through
CR20, relay K1, resistor R2 and
transistor Q1.
4
A CAU or CCU alarm sounds
with no alarm signal applied
to TB1 or TB3.
Defective transistor Q1 or Q2.
4-10
Check for shorted transistor. Replace
defective transistor.
TM 11-5895-878-14&P
Figure 4-3. CAU/CCU Alarm Panel, Schematic Diagram.
4-11
TM 11-5895-878-14&P
4-17. Troubleshooting Chart, Audible Alarm Panel
(fig. 4-4)
Item
1
Trouble Symptom
Probable trouble
No alarm indication with ground a. Power not applied to panel.
on terminal 2 of TB1 or when
test switch SW1 is depressed.
b. Defective time delay relay.
Check and corrective maintenance
a. Check to see that -48 vdc is between
terminal 1 and 2, and 1 and 3. Replace
bay -48 vdc fuse or check wiring if -48
vdc is not present.
b. Replace relay K1 with a known good
relay.
2
Continuous audible alarm and
Defective time delay.
lamp flashing with SW1 is
depressed or alarm signal
(ground) is applied to terminal
2 of TB1.
Replace relay K1.
3
Lamps flash but no audible
alarm when SW1 is depressed
alarm signal (ground) is
applied to terminal 2 of TB1.
a. Defective resistor R1.
b. Defective sonarlert.
a. Check resistor R1. Replace R1 if open.
b. If resistor (a above) is good, replace
sonarlert.
4
Audible sound is normal, but
lamps do not flash or lamps
remain on during audible
sound.
a Defective flasher.
b. Defective lamps DS1 and DS2.
a. Replace flasher.
b. Replace lamps DS1 and DS2 if lamps
remain off and new flasher (a above)
did not help.
5
Normal operation, except lamp
DS1 or DS2 does not light.
Defective lamp.
Replace lamp DS1 or DS2 as required.
6
Normal. operation with alarm
signal applied, but no alarm
when test button SW1 is
depressed.
a. Ground not applied to terminal 3 on
TB1.
b. Defective test switch.
a. Check for ground on terminal 3 of TB1.
Repair wiring if required.
b. Replace switch SW1.
4-12
TM 11-5895-878-14&P
Figure 4-4. Audible Alarm Panel, Schematic Diagram
4-13
TM 11-5895-878-14&P
CHAPTER 5
FUNCTIONING OF ALARM EQUIPMENT
audible alarm is not enabled during the test.
e. Panel Circuit Breaker. The panel circuit breaker
is located on the left side of the assembly with the reset
button appearing on the front panel. Power is brought
into the panel through connector pins 97 through 100.
The breaker, if tripped, will give a ground-out alarm
through pin 92.
5-1. Scope
This chapter describes the major/minor alarm panel, the
universal alarm panel, CAU/CCU alarm panel, and the
audible alarm panel. This chapter is made available to
aid in the operation and repair of the equipment. The
equipment is LBAD fabricated; therefore, no
manufacturer's literature is available. The alarm system
is discussed in paragraph 2-19. Parts location and
identification for the assemblies discussed are given in
appendix D.
5-3. Universal Alarm Panel, Functional Description
The universal alarm panel is designed to connect two
redundant power supplies in parallel while providing the
necessary isolation between power supplies. The unit
also senses the loss of power from one or both power
supplies and gives an alarm indication. The schematic
of the panel is shown in figure 5-2. The redundant
power supplies are isolated from one another by CR1
and CR2. if voltage is lost from PS # 1, the power
supply side of diode CR1 goes to ground potential, relay
K1 goes to a de-energized state, and an alarm indication
is given through TB1, pin 3 or 4. If voltage is lost from
PS # 1, CR2 and K2 operate similarly to CR1 and K1.
5-2. Major/Minor Alarm Panel, Functional
Description
(fig. 4-1)
a. Major Alarm Circuit. A remote contact gives a
major alarm by presenting a ground at one of the odd
numbered pins on the panel connector (odd pins for
major alarms and even pins for minor alarms). This
places a ground, through the diode, on terminal 1 of one
of the Tellites. Since -48 VDC is supplied to Pin 2, the
red Tellite lights. The ground is also extended to the
COM1 terminal of the same Tellite. The relay contacts
in the Tellite are normally closed; therefore, this ground
appears at the NC1 pin of the Tellite and pin 91 of the
panel connector. The ground on pin 91 causes an
audible alarm at the audible alarm panel (para 5-5).
b. Minor Alarm Circuit. In a similar fashion, a
remote contact gives a minor alarm by presenting a
ground at one of the even numbered pins on the panel
connector. The operation is the same as a major alarm
except the amber light is lit by placing the ground on pin
3 of the Tellite.
c. Acknowledge Circuit. The alarm, whether major
or minor, is acknowledged by pressing the Tellite. This
action manually operates the relay contact thus
removing the ground from NC1 and puts it on the NO1
of the Tellite. This removes the ground from Pin 91;
therefore, the audible alarm is silenced. Due to the
jumper from NO1 to Pin 4, the ground is placed on a
locking coil within the Tellite. Since -48 VDC is wired to
pin 5, this coil is energized, locking the Tellite relay in its
present state, once the Tellite is no longer depressed.
Once the fault is cleared and the ground is removed
from the Tellite, the light goes out and the relay unlocks.
d. Test Buttons. All major alarms may be tested
by depressing the red button on the front of the alarm
panel. The minor alarms may be tested by depressing
the black button. These buttons place a ground on the
appropriate pins on all the Tellites, thus causing the
lights to energize. The diodes located between the
Tellites and the connector prevent the ground from
being placed on COM1 and Pin 91; therefore, the
5-4. CAU/CCU Alarm Panel, Functional Description
(fig. 4-3)
a. The CAU/CCU Alarm Panel provides a common
alarm signal (ground) for as many as 20 Crypto Ancillary
Units and 20 Common Control Units. A separate alarm
connection is provided for each type of equipment.
b. The panel is powered by 120 vac, which is
connected through terminals 3 and 4 of TB2 to a 6 vdc
power supply. The + and -6 volt output of the power
supply is used to power two transistor circuits (Q1 and
Q2) and operate two relays (K1 and K2).
c. Up to 20 CCU alarm outputs may be connected
to TB3. Each input is isolated from other equipment
alarm circuits by diodes CR1 through CR20. When 0
vdc is applied to all inputs (on TB3) transistor Q1 is held
cut off. When + 6 vdc is applied through an isolation
diode to the base of Q1, the transistor conducts current
through the coil of relay K1, closes its contacts, placing
ground on the panels CCU alarm output (terminal 5 of
TB2).
d. The panel also provides connections for up to
20 CAU alarm inputs. Due to the difference in the alarm
logic, the isolation diodes are connected in the opposite
direction as they are for CCU operation. The circuit
operates similarly to the CCU circuit, except for the
following: (1) The transistor (Q2) is a PNP in place of a
NPN; (2) An alarm from a CAU is +6 vdc; (3) Relay K2
contacts provide ground at the CAU panel alarm output
(terminal 1 of TB2).
5-1
TM 11-5895-878-14&P
0.1 to 10 seconds.) When the contacts are closed -48
vdc is applied through a 1.5 Kohm dropping resistor to a
sonarlert, the electronics flasher, and alarm lamps DS1
and DS2.
c. The solaralert provides an audible sound. The
electronic flasher operates, opening and closing
contacts 4 and 7. When contacts 4 and 7 are closed,
alarm lamp DS1 and DS2 light.
d. When relay K1 contacts open the -48 vdc is
removed, and the audible sound along with the flashing
lights stop. The panel may be tested by depressing
switch SW1. The switch is connected to the panel
ground (+48 vdc) through terminal 3 of TB1.
5-5. Audible Alarm Panel, Functional Description
(fig. 4-4)
a. There are two audible alarm panels, one
connected to the black: Major/Minor Alarm Panel, the
other connected to the red Major/Minor Alarm Panel.
The panel is powered by the - 48 vac power system of
the associated side of the P&T.
b. The -48 vdc power is connected through
terminal 1 of TB1 to pin 7 of series solid state recycle
time relay K1. When an alarm is sensed, ground (+48
vdc) is applied through terminal 2 of TB1 to pin 2 of
relay K1. The relay is activated, and its time delay
action begins closing and opening contacts 1 and 3.
(The contact close and open times are adjustable from
5-2
TM 11-5895-878-14&P
APPENDIX A
REFERENCES
The following publications are available to the maintenance personnel of the Pentagon Patch and Test Technical Control
Facility:
DA Pam 310-4
DA Pam 310-7
DCAC 310-70-1
DECEO H500-12-64
MIL-STD-188-310
SB 11-573
TB 11-6625-602-35
TB 43-0118
TM 11-5815-306-12
TM 11-5815-306-34P
TM 11-5815-306-35
TM 11-6625-602-12
M 11-6625-602-12-1
TM 11-6625-602-20P
TM 11-6625-602-20P-1
TM 11-6625-602-40-1
TM 11-6625-602-40P
TM 11-6625-602-40P-1
TM 11-6625-602-45
TM 11-6625-1548-15
TM 11-6625-1668-12
TM 11-6625-1668-45-1
TM 11-6625-1668-45-2
TM 11-6625-1668-45-3
Index of Technical Publications Technical Manuals, Technical Bulletins, Supply
Manuals (types 7, 8, and 9), Supply Bulletins, and Lubrication Orders.
US Army Equipment Index of Modification Work Orders.
Volume I, DCS Technical Control Policy and Facilities; Volume II, DCS Technical
Control Procedures; Volume IV, DCS Technical Control Glossary.
DCS Technical Control Engineering Criteria.
Subsystems Design and Engineering Standards for Technical Control Facilities.
Painting and Preservation Supplies Available for Field Use for Electronics Command
Equipment.
Calibration Procedure for Telephone Test Set AN/USM-181A (NSN 6625-00-7400344) and AN/USM-181B (NSN 6625-00-740-0344).
Field Instructions for Painting and Preserving Electronics Command Equipment Including
Camouflage Pattern Painting of Electrical Equipment Shelters.
Operator's and Organizational Maintenance Manual (Including Repair Parts and Special
Tools Lists): Teletypewriter Set AN/FGC-80.
Direct Support and General Support Maintenance Repair Parts and Special Tools Lists
(Including Depot Maintenance Repair Parts and Special Tools): Teletypewriter Set
AN/FGC-80 (NSN 5815-00-941-0068).
Direct Support, General Support, and Depot Maintenance Manual: Teletypewriter Set
AN/FGC-80.
Operator's and Organizational Maintenance Manual Including Repair Parts and Special
Tools Lists: Test Set, Telephone AN/USM-181 and Hewlett-Packard Model 3550B.
Operator's and Organizational Maintenance Manual: Test Set, Telephone
AN/USM-181B.
Organizational Maintenance Repair Parts and Special Tools Lists for Test Sets,
Telephone AN/USM-181 and AN/USM-181A (NSN 6625-00-740-0344).
Organizational Maintenance Repair Parts and Special Tool Lists for Test Sets,
Telephone AN/USM-181B and AN/USM-181C (NSN 6625-00-740-0344).
General Support Maintenance Manual: Test Set, Telephone AN/USM-181B.
GS Maintenance Repair Parts and Special Tools Lists (Including Depot Maintenance
Repair Parts and Special Tools) for Test Sets Telephone AN/USM-181 and
AN/USM-181A (NSN 6625-00-740-0344).
General Support Maintenance Repair Parts and Special Tools List (Including Depot
Maintenance Repair Parts and Special Tools) for Test Set, Telephone
AN/USM-181B and AN/USM-181C (NSN 6625-00-740-0344).
General Support and Depot Maintenance Manual Including Repair Parts List: Test Set,
Telephone AN/USM-181 and Hewlett-Packard Model 3550B.
Organizational, DS, GS, and Depot Maintenance Manual: Counter, Electronic, Digital
CP-772 Hewlett-Packard Model 5245L.
Operator and Organizational Maintenance Manual (Including Repair Parts and Special
Tools Lists): Test Sets, Telegraph AN/GGM-15(V)1 (NSN 6625-00-424-1702)
and AN/GGM-15(V)2 (NSN 6625-00-442-6131).
General Support and Depot Maintenance Manual (Including Repair Parts and Special
Tools List): Test Sets, Telegraph AN/GGM-15(V)1 and AN/GGM-15(V)2;
Generator, Signal SG-860/GGM-15(V) and Dolly Test Equipment
V-434/GGM-15 (V).
General Support and Depot Maintenance Manual (Including Repair Parts and Special
Tools List): Test Sets, Telegraph AN/GGM-15(V)1 and AN/GGM-15(V)2;
Analyzer, Signal Distortion TS-2862/GGM-15(V).
General Support and Depot Maintenance Manual Including Repair Parts and Special
A-1
TM 11-5895-878-14&P
TM 11-66725-1794-15
TM 38-750
Tools List: Test Sets, Telegraph AN/GGM-15(V) 1 (NSN 6625-00-464-1702) and
AN/GGM-15(V)2 (NSN 6625-00-442-6131); Oscilloscope OS-206/GGM-15(V).
Operator's, Organizational, Direct Support and Depot Maintenance Manual: Impulse
Noise Counter, Northeast Electronics Model TTS-58A.
The Army Maintenance Management System (TAMMS).
COMMERCIAL LITERATURE
Instruction Manual
Instruction Manual
Instruction Manual
Instruction Manual
Instruction Manual
Instruction Manual
Instruction Manual
Instruction Manual
Instruction Manual
Instruction Manual
Instruction Manual
Instruction Manual
Instruction Manual
Instruction Manual
Instruction Manual
Instruction Manual
Instruction Manual
Instruction Manual
Technical Manual
Technical Manual
Distortion Analyzer Hewlett-Packard Model 334A.
Multimeter Hewlett-Packard Model 4390A.
DC Power Supply, Sorenson (-48 VDC supply), DCR-60-30B.
DC Power Supply, Solar Electric. (24 VDC), 282127-1.
DC Power Supply, Tele-Signal Corp. # 676D (+6 VDC).
Model 601 Data Transmission Test Set (Frederick Electronics Corp).
Measuring Set, Envelope Delay, Acton 490.
Electronics Counter, Hewlett-Packard Model 5245L.
Oscilloscope, Storage, Tektronix Model R7623.
Oscilloscope Hewlett-Packard 183BR.
Tektronix Model RM-527.
Vector Impedance Meter, Hewlett-Packard Model 4800A.
Video Waveform Monitor, Tektronix Model 1485R.
Wave Analyzer Hewlett-Packard Model 302A.
X Y Recorder Hewlett-Packard Model 7034A.
X Y Recorder Hewlett-Packard Model 7702B.
Phase Jitter Meter, Hekimian 48.
Multimeter, Digitech Model 269.
Dual Speaker Panel (Engineering Devices).
CTM-2021 Iss. 4 Telegraph Carrier Test Set KS-19935 (Stelma Inc.).
A-2
TM 11-5895-878-14&P
APPENDIX B
ABBREVIATIONS
The following is a listing of abbreviations used throughout this technical manual:
Abbreviation
Definition
Abbreviation
AC
Alternating current
LBAD
ACC
Army Communications Command
MAJ
ALM
Alarm
MIN
AMP
Ampere
MISC
AMPL
Amplifier
MOB
AQRMS
Automatic Quality Reporting, Monitoring System
MOD
AUTO
Automatic
MODEM
AUTOVON Automatic Voice Network
MON
BATT
Battery
Mux
CAU
Crypto Ancillary Unit
MWO
CCO
Circuit Control Office
NC
CCOC
Communications Command Operations Center
NCS
CCU
Common Control Unit
NO
CH
Channel
NT
CKT
Circuit
OL
COM
Common
O&M
CR
Diode
OSC
dB
Decibel
O/W
dBm
decibel (referenced to 1 mw across 600 ohms)
PBX
dBmO
dBm referenced and measured from any relative .
PC
transmission level
PS
dBrn
decibels above the standard reference noise level of
P&T
-90 dbm
Q
dBrnc
decibels above the reference noise level when the noise QA
is weighted with a standard "C message" filter
QC
dBrncO
dBrnc referenced and measured from any relative noise R
level
REC
DC
Direct current
RX
DCS
Defense Communication System
RMS
DEMOD
Demodulator
SCCO
DL
Drawing list
SG
DOCC
DCA Operations Control Complex
SOP
EL
Equal level
T
EQ
Equipment
TCF
Equip
Equipment
TMS
FREQ
Frequency
TRANS
GND
Ground
TSO
GP
Group
TTY
HF
High frequency
TX
HP
Hewlett-Packard
VAC
Hz
Hertz
VDC
ICO
Intermediate Control Office
VF
IDF
Intermediate Distribution Frame
VFCT
INT
Interbay
VFTC
INT P&T
Intermediate Patch and Test Bay
VM
KV
Kilovolts
VTVM
KVA
Kilovolt-amperes
XMIT
B-1
Definition
Lexington-Blue Grass Army Depot
Major
Minor
Miscellaneous
Mobile
Modulator
Modulator-Demodulator
Monitor
Multiplex
Modification Work Order
Normally closed
National Communication System
Normally open
Normally through; no transition
Open loop
Operation and Maintenance
Oscillator
Orderwires
Private Branch Exchange
Printed circuit
Power supply
Patch and test facility
Integrated circuit or transistor
Quality assurance
Quality control
Resistor, a ring lead
Receive
Receiver
Root mean square
Special Circuit Control Office
Signal ground
Standard Operating Procedures
Tip lead, or transformer
Technical Control Facility
Transmission measuring set
Transmit
Telecommunications Service Order
Teletypewriter
Transmit
Volts alternating current
Volts direct current
Voice frequency
Voice frequency carrier telegraph
Voice frequency telegraph circuit
Voltmeter
Vacuum tube voltmeter
Transmit
TM 11-5895-878-14&P
APPENDIX D
ORGANIZATIONAL, DIRECT SUPPORT, AND GENERAL SUPPORT
MAINTENANCE REPAIR PARTS AND SPECIAL TOOLS LISTS
Section I. INTRODUCTION
NOTE
Cannibalization or salvage may be
used as a source of supply for any
items source coded above except
those coded XA and aircraft support
items as restricted by AR 700-42.
(2) Maintenance code. Maintenance codes
are assigned to indicate the levels of maintenance
authorized to USE and REPAIR support items. The
maintenance codes are entered in the third and fourth
positions of the Uniform SMR Code format as follows:
(a) The maintenance code entered in the
third position will indicate the lowest maintenance level
authorized to remove, replace, and use the support item.
The maintenance code entered in the third position will
indicate one of the following levels of maintenance:
Code
Application/Explanation
O
-Support item is removed, replaced, used at the
organizational level.
F
-Support item is removed, replaced, used at the
direct support level.
H
-Support item is removed, replaced, used at the
general support level.
(b) The maintenance code entered in the
fourth position indicates whether the item is to be
repaired and identifies the lowest maintenance level with
the capability to perform complete repair (i.e., all
authorized maintenance functions). This position will
contain one of the following maintenance codes:
Code Application/Explanation
F
-The lowest maintenance level capable of
complete repair of the support item is the
direct support level.
H
-The lowest maintenance level capable of
complete repair of the support item is the
general support level.
D
-The lowest maintenance level capable of
complete repair of the support item is the
depot level.
Z
-Nonreparable. No repair is authorized.
(3) Recoverability code. Recoverability codes
are assigned to support items to indicate the disposition
action on unserviceable items. The recoverability code is
entered in the fifth position of the Uniform SMR Code
format as follows:
Recoverability codes
Definition
Z
-Nonreparable item.
When unserviceable,
condemn and dispose at the level indicated in
position 3.
F
-Reparable item.
When uneconomically
reparable, condemn and dispose at the direct
support level.
H
-Reparable item. When uneconomically
D-1. Scope
This appendix lists spares and repair parts; special tools;
special test, measurement, and diagnostic equipment
(TMDE), and other special support equipment required
for performance of organizational, direct support, and
general support maintenance on Technical Control, Patch
and Test Facility. It authorizes the requisitioning and
issue of spares and repair parts as indicated by the
source and maintenance codes.
D-2. General
This Repair Parts and Special Tools List is divided into
the following sections:
a. Section II Repair Parts List. A list of spares and
repair parts authorized for use in the performance of
maintenance. The list also includes parts which must be
removed for replacement of the authorized parts. Parts
lists are composed of functional groups in numeric
sequence, with the parts in each group listed in figure
and item number sequence.
b. Section III. Special Tools List. Not applicable.
c. Section IV. National Stock Number and Part
Number Index. A list, in National item identification
number (NIIN) sequence, of all National stock numbers
(NSN) appearing in the listings, followed by a list, in
alphameric sequence, of all part numbers appearing in
the listings. National stock numbers and part numbers
are cross-referenced to each illustration figure and item
number appearance.
D-3. Explanation of Columns
a. Illustration. This column is divided as follows:
(1) Figure number.
Indicates the figure
number of the illustration on which the item is shown.
(2) Item number. The number used to identify
item called out in the illustration.
b. Source, Maintenance, and Recoverability (SMR)
Codes.
(1) Source code. Source codes indicate the
manner of acquiring support items for maintenance;
repair, or overhaul of end items. Source codes are
entered in the first and second positions of the Uniform
SMR Code format as follows:
Code
Definition
PA
-Item procured and stocked for anticipated or
known usage.
MD
-Item to be manufactured or fabricated at the
depot maintenance level.
XD
-A support item that is not stocked. When
required, item will be procured through normal
supply channels.
D-1
TM 11-5895-878-14&P
that no specific quantity is applicable (e.g., shims,
spacers, etc).
Recoverability
codes
Definition
reparable, condemn and dispose at the
general support level.
D
-Reparable item. When beyond lower level
repair
capability,
return
to
depot.
Condemnation and disposal not authorized
below depot level.
D-4. Special Information
National stock numbers (NSN's) that are missing from P
source coded items have been applied for and will be
added to this TM by future change/revision when they
are entered in the Army Master Data File (AMDF). Until
the NSN's are established and published, submit
exception requisitions to: Commander, U S Army
Communications and Electronics Materiel ReadinessCommand, ATTN: DRSEL-MM, Fort Monmouth, NJ
07703 for the part required to support your equipment.
c. National Stock Number. Indicates the National
stock number assigned to the item and will be used for
requisitioning purposes.
d. Part Number. Indicates the primary number
used by the manufacturer (individual, company, firm,
corporation, or Government activity), which controls the
design and characteristics of the item by means of its
engineering drawings, specifications, standards, and
inspection requirements to identify an item or range of
items.
NOTE
When a stock numbered item is
requisitioned,
the
repair
part
received may have a different part
number than the part being replaced.
e. Federal Supply Code for Manufacturer (FSCM).
The FSCM is a 5-digit numeric code listed in SB 708-42
which is used to identify the manufacturer, distributor, or
Government agency, etc.
D-5. How to Locate Repair Parts
a. When National stock number or part number is
unknown.
(1) First.
Using the table of contents,
determine the functional group within which the item
belongs.
This is necessary since illustrations are
prepared for functional groups and listings are divided
into the same groups.
(2) Second. Find the illustration covering the
functional group to which the item belongs.
(3) Third. Identify the item on the illustration
and note the illustration figure and item number of the
item.
(4) Fourth. Using the Repair Parts Listing,
find the figure and item number noted on the illustration.
f. Description. Indicates the Federal item name
and, if required, a minimum description to identify the
item.
b. When National stock number or part number is
known.
g. Unit of Measure (U/M). Indicates the standard
of the basic quantity of the listed item as used in
performing the actual maintenance function.
This
measure is expressed by a two-character alphabetical
abbreviation (e.g., ea, in, pr, etc). When the unit of
measure differs from the unit of issue, the lowest unit of
issue that will satisfy the required units of measure will
be requisitioned.
(1) First. Using the Index of National Stock
Numbers and Part Numbers, find the pertinent National
stock number or part number. This index is in NIIN
sequence followed by a list of part numbers in
alphameric sequence, cross-referenced to the
illustration figure number and item number.
(2) Second. After finding the figure and item
number, locate the figure and item number in the repair
parts list.
h. Quantity Incorporated in Unit. Indicates the
quantity of the item used in the breakout shown on the
illustration figure, which is prepared for a functional
group, subfunctional group, or an assembly. A "V"
appearing in this column in lieu of a quantity indicates
D-6. Abbreviations
Not applicable.
(Next printed page is D-4)
D-2
TM 11-5895-878-14&P
Figure D-1. Patch Panel Assembly, 2/Wire Audio, Parts Location.
D-4
TM 11-5895-878-14&P
SECTION II. REPAIR PARTS LIST
(1)
ILLUSTRATION
(a)
(b)
FIG
ITEM
NO.
NO.
(2)
SMR
CODE
(3)
NATIONAL
STOCK
NUMBER
(4)
PART
NUMBER
(5)
(6)
DESCRIPTION
FSCM
(7)
USABLE ON CODE
U/M
(8)
QTY
INC
IN
UNIT
GROUP: 01 PATCH PANEL, ASSEMBLY, 2/WIRE AUDIO
LBAD-D-33674, 21617
D-1
I
MDFZZ
LBAD-D-33656
21617
SIDE FRAME....................................................................
EA
2
D-1
2
MDFZZ
LBAD-D-28580-52
21617
IDENTIFICATION PLATE .................................................
EA
2
D-1
3
PAFZZ
96906
SCREW, DRIVE #0 X 3/16 LG .........................................
EA
8
D-1
4
MDFZZ
LBAD-D-28579
21617
PANEL, PATCHBOARD....................................................
EA
1
D-1
5
XDFZZ
90A
64959
STRIP, IDENTIFICATION................................................
EA
3
D-1
6
PAFZZ
5305-00-958-5483 MS35190-221
96906
SCREW, FLAT HEAD #4-40 X 1/4 LG...............................
EA
12
D-1
7
MDFZZ
LBAD-D-33668
21617
JACK, TELEPHONE .........................................................
EA
48
D-1
8
MDFZZ
LBAD-D-33666
21617
JACK, TELEPHONE .........................................................
EA
48
D-1
9
PAFZZ
5365-00-954-9301 2335
83330
SPACER, SLEEVE ..........................................................
EA
4
D-1
10
PAFZZ
5305-00-889-2999 MS35206-217
96906
SCREW, P.H.M.S. #4-40 X 1/2 LG...................................
EA
4
D-1
11
PAFZZ
5305-00-984-4988 MS35206-228
96906
SCREW, P.H.M.S. #6-32 X 3/8 LG...................................
EA
104
D-1
12
PAFZZ
5330-00-209-0788
MS35335-30
96906
WASHER, LOCK (EXTERNAL TEETH) #6 ........................
EA
96
D-1
13
MDFZZ
LBAD-D-33659
21617
PANEL, CONNECTOR 4-3/8-2 X 80..................................
EA
1
D-1
14
MDFZZ
LBAD-D-33675
21617
PRINTED CIRCUIT, FLEXIBLE .......................................
EA
1
D-1
15
MDFZZ
LBAD-D-33665-2
21617
CONNECTOR, 80 PIN.....................................................
EA
2
D-1
16
PAFZZ
5310-00-081-8087 MS21044-N06
96906
NUT, ELASTIC STOP #6-32 .............................................
EA
14
D-1
17
MDFZZ
21617
PLATE, IDENTIFICATION ...............................................
EA
1
D-1
18
PAFZZ
5305-00-889-3116 MS35206-213
96906
SCREW, P.H.M.S. #4-40 X 1/4 LG...................................
EA
2
D-1
19
PAFZZ
5310-00-088-0551 MS21044-N04
96906
NUT, SELF LOCKING #4-40 NC .......................................
EA
2
D-1
20
MDFZZ
LBAD-D-33658
21617
COVER (TOP AND BOTTOM) ..........................................
EA
2
D-1
21
PAFZZ
5305-00-995-6653 MS35190-222
96906
SCREW, FLAT HEAD #4-40 NC X 5/16 LG .......................
EA
4
D-1
22
PAFZZ
5305-00-984-7361 MS35191-270
96906
SCREW, FLAT HEAD #10-32 NF X 3/8 LG .......................
EA
6
5305-00-253-5607 MS21318-8
LBAD-D-33672-1
D-5
TM 11-5895-878-14&P
Figure D-2. Patch Panel Assembly, Interbay, Parts Location.
D-6
TM 11-5895-878-14&P
SECTION II. REPAIR PARTS LIST
(1)
ILLUSTRATION
(a)
(b)
FIG
ITEM
NO.
NO.
(2)
SMR
CODE
(3)
NATIONAL
STOCK
NUMBER
(4)
PART
NUMBER
(5)
(6)
DESCRIPTION
FSCM
(7)
USABLE ON CODE
U/M
(8)
QTY
INC
IN
UNIT
GROUP: 02 PATCH PANEL ASSEMBLY, INTERBAY
LBAD-D-33679, 21617
D-2
1
MDFZZ
LBAD-D-33655
21617
SIDE FRAME....................................................................
EA
2
D-2
2
MDFZZ
LBAD-D-12377
21617
PANEL, PATCHBOARD....................................................
EA
1
D-2
3
MDFZZ
LBAD-D-28580-1
21617
PLATE, IDENTIFICATION ................................................
EA
2
D-2
4
PAFZZ
96906
SCREW, DRIVE #0-3/16 LG .............................................
EA
8
D-2
5
XDFZZ
64959
STRIP, IDENTIFICATION.................................................
EA
2
D-2
6
PAFZZ
5305-00-958-5483 MS35190-221
96906
SCREW, F.H.M.S. #4-40 X 1/4 LG ....................................
EA
8
D-2
7
MDFZZ
LBAD-D-33670
64959
JACK, TELEPHONE .........................................................
EA
48
D-2
8
PAFZZ
5305-00-984-4988 MS35206-228
96906
SCREW, P.H.M.S. #6-32 X 3/8 LG....................................
EA
56
D-2
9
PAFZZ
5310-00-209-0788 MS35335-30
96906
WASHER, LOCK (EXTERNAL TEETH) #6 ........................
EA
48
D-2
10
PAFZZ
5365-00-954-9301 2335-
83330
SPACER, SLEEVE ...........................................................
EA
4
D-2
11
PAFZZ
5305-00-889-2999 MS35206-217
96906
SCREW, P.H.M.S. #4-40 X 1/2 LG....................................
EA
4
D-2
12
MDFZZ
LBAD-D-33658
21617
COVER (TOP AND BOTTOM) ..........................................
EA
2
D-2
13
MDFZZ
LBAD-D-33681
21617
PRINTED CIRCUIT, FLEXIBLE ........................................
EA
1
D-2
14
MDFZZ
LBAD-D-33660
21617
PANEL, CONNECTOR .....................................................
EA
1
D-2
15
PAFZZ
5310-00-081-8087 MS21044-N06
96906
STOP NUT, ELASTIC #6-32 NC .......................................
EA
4
D-2
16
MDFZZ
LBAD-D-33665-2
21617
CONNECTOR ..................................................................
EA
2
D-2
17
MDFZZ
LBAD-D-33672-2
21617
PLATE, IDENTIFICATION ................................................
EA
1
D-2
18
PAFZZ
5305-00-889-3116 MS35206-213
96906
SCREW,, P.H.M.S. #4-40 X 1/4 LG...................................
EA
2
D-2
19
PAFZZ
5310-00-088-0551 MS21044-N04
96906
NUT, SELF LOCKING #4-40 NC .......................................
EA
2
D-2
20
PAFZZ
5305-00-995-6653 MS35190-222
96906
SCREW, F.H.M.S. #4-40 NC X 5/16 LG ............................
EA
4
D-2
21
PAFZZ
5305-00-984-7361 MS35191-270
96906
SCREW F.H.M.S. #10-32 NF X 3/8 LG..............................
EA
4
5305-00-253-5607 MS21318-8
90A
D-7
TM 11-5895-878-14&P
Figure D-3. Patch Panel Assembly, Misc, 10 Lamp GP3, Parts Location.
D-8
TM 11-5895-878-14&P
SECTION II. REPAIR PARTS LIST
(1)
ILLUSTRATION
(a)
(b)
FIG
ITEM
NO.
NO.
(2)
SMR
CODE
(3)
NATIONAL
STOCK
NUMBER
(4)
PART
NUMBER
(5)
(6)
DESCRIPTION
FSCM
(7)
USABLE ON CODE
U/M
(8)
QTY
INC
IN
UNIT
GROUP: 03 PATCH PANEL, MISC, 10 LAMP GP 3
LBAD-D33684-3, 21617
D-3
1
MDFZZ
LBAD-D-33655
21617
SIDE FRAME....................................................................
EA
2
D-3
2
MDFZZ
LBAD-D-28580-5
21617
PLATE IDENTIFICATION .................................................
EA
2
D-3
3
XDFZZ
64959
STRIP, IDENTIFICATION.................................................
EA
2
D-3
4
MDFZZ
LBAD-D-33667
21617
JACK................................................................................
EA
10
D-3
5
MDFZZ
LBAD-D-33670
21617
JACK................................................................................
EA
15
D-3
6
PAFZZ
5305-00-958-5483 MS35190-221
96906
SCREW, FLATHEAD #4-40 X 1/4 LG................................
EA
8
D-3
7
MDFZZ
LBAD-D-33369
21617
JACK................................................................................
EA
12
D-3
8
MDFZZ
LBAD-D-33699
21617
JACK, LAMP.....................................................................
EA
10
D-3
9
XDFZZ
PJ-152
70674
CAP, LAMP ......................................................................
EA
10
D-3
10
XDFZZ
48C-T2
58854
BULB, LIGHT....................................................................
EA
10
D-3
11
XDFZZ
MS21318-18
96906
SCREW, DRIVE #0 X 3/16 LG ..........................................
EA
8
D-3
12
PAFZZ
5365-00-954-9301
2335
83330
SPACER, SLEEVE ...........................................................
EA
4
D-3
13
PAFZZ
5305-00-889-2999 MS35206-217
96906
SCREW, P.H.M.S. #4-40 X 1/2 LG....................................
EA
4
D-3
14
PAFZZ
5305-00-984-4988 MS35206-228
96906
SCREW, P.H.M.S. #6-32 X 3/8 LG....................................
EA
46
D-3
15
PAFZZ
5310-00-209-0788
MS35335-30
96906
WASHER, LOCK #6 (EXTERNAL TEETH) ........................
EA
46
D-3
16
MDFZZ
LBAD-D-12377
21617
PANEL, PATCHBOARD....................................................
EA
1
D-3
17
MDFZZ
LBAD-D-33671
21617
JACK................................................................................
EA
1
D-3
18
PAFZZ
5310-00-081-8087 MS21044-N06
96906
NUT, ELASTIC STOP #6 ..................................................
EA
8
D-3
19
MDFZZ
LBAD-D-33665-2
21617
CONNECTOR ..................................................................
EA
8
D-3
20
MDFZZ
LBAD-D-33660
21617
PANEL, CONNECTOR .....................................................
EA
2
D-3
21
MDFZZ
LBAD-D-33672-8
21617
PLATE, IDENTIFICATION ................................................
EA
1
D-3
22
PAFZZ
5305-00-889-3116 MS35206-213
96906
SCREW, P.H.M.S. #4-40 X 1/4 LG....................................
EA
2
D-3
23
PAFZZ
53100-0-088-0551 MS21044-N04
96906
NUT, SELF LOCKING #4 40 NC .......................................
EA
2
D-3
24
MDFZZ
LBAD-D-33686
21617
PRINTED CIRCUIT, FLEXIBLE ........................................
EA
1
D-3
25
PAFZZ
5305-00-995-6653 MS35190-222
96906
SCREW, F.H.M.S. #4-40 X 5/16 LG ..................................
EA
4
D-3
26
PAFZZ
5305-00-984-7361 MS35191-270
96906
SCREW, F.H.M.S. #10-32 X 3/8 LG ..................................
EA
4
90A
D-9
TM 11-5895-878-14&P
Figure D-4. Patch Panel Assembly, Interbay, 48 Lines W/48 Lamps, Parts Location.
D-10
TM 11-5895-878-14&P
SECTION II. REPAIR PARTS LIST
(1)
ILLUSTRATION
(a)
(b)
FIG
ITEM
NO.
NO.
(2)
SMR
CODE
(3)
NATIONAL
STOCK
NUMBER
(4)
PART
NUMBER
(5)
(6)
DESCRIPTION
FSCM
(7)
USABLE ON CODE
U/M
(8)
QTY
INC
IN
UNIT
GROUP: 04 PATCH PANEL ASSEMBLY, INTERBAY,
48 LINES W/48 LAMPS, LBAD-D-33700
D-4
1
MDFZZ
LBAD-D-33656
21617
SIDE FRAME....................................................................
EA
2
D-4
2
MDFZZ
LBAD-D-28580-51
21617
PLATE, IDENTIFICATION ................................................
EA
2
D-4
3
XDFZZ
LBAD-D-28579
21617
PANEL, PATCHBOARD....................................................
EA
1
D-4
4
XDFZZ
LBAD-D-33668
21617
JACK, JJ074 (MOD) .........................................................
EA
48
D-4
5
XDFZZ
90A
64959
STRIP, IDENTIFICATION STRIP......................................
EA
3
D-4
6
MDFZZ
LBAD-D-33699
21617
JACK, LAMP.....................................................................
EA
48
D-4
7
PAFZZ
5365-00-954-9301
2335
83330
SPACER, SLEEVE ...........................................................
EA
4
D-4
8
PAFZZ
5305-00-984-4988 MS35206-228
96906
SCREW, P.H.M.S. #6-32 X 3/8 LG....................................
EA
104
D-4
9
PAFZZ
PJ-152
70674
CAP, LAMP ......................................................................
EA
48
D-4
10
MDFZZ
LBAD-D-33664
21617
PANEL, CONNECTOR .....................................................
EA
1
D-4
11
MDFZZ
LBAD-D-33702
21617
CIRCUIT, PRINTED, FLEXIBLE .......................................
EA
1
D-4
12
PAFZZ
5310-00-081-8087 MS21044-N06
96906
NUT, ELASTIC STOP 6-32 NC .........................................
EA
4
D-4
13
XDFZZ
LBAD-D-33665-3
44038
CONNECTOR, 100 PIN #513938 (MOD)...........................
EA
2
D-4
14
MDFZZ
LBAD-D-33672-6
21617
PLATE, IDENTIFICATION ................................................
EA
1
D-4
15
MDFZZ
LBAD-D-33658
21617
COVER (TOP AND BOTTOM) ..........................................
EA
2
D-4
16
PAFZZ
5305-00-995-6653 MS35190-222
96906
SCREW, FLAT HEAD #4-40 NC X 5/16 LG .......................
EA
4
D-4
17
PAFZZ
5305-00-984-7361 MS35191-270
96906
SCREW, FLAT HEAD #10-32 NF X 3/8 LG .......................
EA
6
D-4
18
PAOZZ
48C-T2
58854
BULB, LIGHT....................................................................
EA
48
D-4
19
PAFZZ
5305-00-253-5607
MS21318-8
96906
SCREW, DRIVE 0 X 3/16 LG ............................................
EA
8
D-4
20
PAFZZ
5305-00-958-5483 MS35190-221
96906
SCREW, FLAT HEAD 4-49 X 1/4 LG.................................
EA
12
D-4
21
PAFZZ
5305-00-889-2999 MS35206-217
96906
SCREW, P.H.M.S. 4-40 X 1/2 LG......................................
EA
4
D-4
22
PAFZZ
5310-00-209-0788
MS35335-30
96906
WASHER, LOCK #6 (EXTERNAL TEETH) ........................
EA
96
D-4
23
PAFZZ
5305-00-889-3116 MS35206-213
96906
SCREW, P.H.M.S. 4-40 X 1/4 LG......................................
EA
2
D-4
24
PAFZZ
5310-00-088-0551 MS21044-N04
96906
NUT, SELF LOCKING #4-40 NC .......................................
EA
2
D-11/(D-12 BLANK)
TM 11-5895-878-14&P
Figure D-5. Twinax Wideband Patch Panel Assembly, Parts Location (Sheet 1 of 2).
D-13
TM 11-5895-878-14&P
Figure D-5. Twinax Wideband Patch Panel Assembly, Parts Location (Sheet 2 of 2).
D-14
TM 11-5895-878-14&P
SECTION II. REPAIR PARTS LIST
(1)
ILLUSTRATION
(a)
(b)
FIG
ITEM
NO.
NO.
(2)
SMR
CODE
(3)
NATIONAL
STOCK
NUMBER
(4)
PART
NUMBER
(5)
(6)
DESCRIPTION
FSCM
(7)
USABLE ON CODE
U/M
(8)
QTY
INC
IN
UNIT
GROUP: 05 TWINAX WIDEBAND PATCH PANEL ASSEMBLY,
LBAD-D-33440-3, 21617
D-5
1
MDFZZ
LBAD-D-33441
21617
PANEL .............................................................................
EA
1
D-5
2
MDFZZ
LBAD-D-33443-1
21617
BRACKET ........................................................................
EA
1
D-5
3
MDFZZ
LBAD-D-33444
21617
STRIP DESIGNATION......................................................
EA
1
D-5
4
PAFZZ
MS35198-12
96906
SCREW, F.H.M.S. #4-40 X 1/4 LG ....................................
EA
13
D-5
5
MDFZZ
LBAD-D-33443-2
21617
BRACKET ........................................................................
EA
1
D-5
6
XDFZZ
MS35198-17
96906
SCREW, F.H.M.S. #4-40 X 5/8 LG ....................................
EA
80
D-5
7
XDFHH
LBAD-C-33442
21617
JACK, TWINTERM 207T (75) ...........................................
EA
20
D-5
8
MDFFF
LBAD-D-33445-3
21617
ASSEMBLY, CABLE (75) ..................................................
EA
20
D-5
9
XDFZZ
TRC-75-2
14949
CABLE, TRIAX .................................................................
FT
V
D-5
10
XDFZZ
PL-76
14949
PLUG, CABLE ..................................................................
EA
40
D-5
11
MDFZZ
LBAD-D-54465
21617
ASSEMBLY, TRIAX TO WINAX ADAPTER .......................
EA
40
D-5
12
XDFHH
LBAD-C-33442
21617
JACK, TWINTERM 20M (75).............................................
EA
40
5305-00-151-1321
D-15
TM 11-5895-878-14&P
Figure D-6. Assembly, Jack Twinterm 20T and 20M, Parts Location.
D-16
TM 11-5895-878-14&P
SECTION II. REPAIR PARTS LIST
(1)
ILLUSTRATION
(a)
(b)
FIG
ITEM
NO.
NO.
(2)
SMR
CODE
(3)
NATIONAL
STOCK
NUMBER
(4)
PART
NUMBER
(5)
(6)
DESCRIPTION
FSCM
(7)
USABLE ON CODE
U/M
(8)
QTY
INC
IN
UNIT
GROUP: 0501 ASSEMBLY, JACK TWINTERM 20T AND 20M,
LBAD-C-33442, 21617
D-6
1
PAFHH
5935-01-049-0049
20T
D-6
2
PAFZZ
5905-00-116-8567 RCR20G750JS
D-6
3
XDFHH
D-6
4
PAFZZ
20M
5905-00-105-7768 RCR07G561JS
02002
JACK................................................................................
EA
1
81349
RESISTOR, COMPOSITION: 750 OHM, 1/2W, PORM 5...
EA
2
02002
JACK................................................................................
EA
1
81349
RESISTOR, COMPOSITION: 560 OHM, 1/4W, PORM 5%
EA
2
D-17
TM 11-5895-878-14&P
Figure D-7. Universal DC Patch Panel Assembly, Parts Location (Sheet 1 of 3).
D-18
TM 11-5895-878-14&P
Figure D-7. Universal DC Patch Panel Assembly, Parts Location (Sheet 2 of 3).
D-19
TM 11-5895-878-14&P
Figure D-7. Universal DC Patch Panel Assembly, Parts Location (Sheet 3 of 3).
D-20
SECTION II REPAIR PARTS LIST
(1)
ILLUSTRATION
(a)
(b)
FIG
ITEM
NO.
NO.
(2)
SMR
CODE
(3)
NATIONAL
STOCK
NUMBER
TM 11-5895-878-14&P
(4)
PART
NUMBER
(5)
(6)
DESCRIPTION
FSCM
(7)
USABLE ON CODE
U/M
(8)
QTY
INC
IN
UNIT
GROUP: 06 UNIVERSAL D.C. PATCH PANEL
ASSEMBLY, LBAD-D-52178, 21617
D-7
D-7
D-7
D-7
D-7
D-7
D-7
D-7
D-7
D-7
D-7
D-7
D-7
D-7
D-7
D-7
D-7
D-7
D-7
D-7
D-7
D-7
D-7
D-7
D-7
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
MDFZZ
PAFZZ
XDFZZ
MDFZZ
MDFZZ
XDFZZ
PAFZZ
MDFZZ
MDFZZ
MDFZZ
XDFZZ
PAFZZ
PAFZZ
PAFZZ
PAFZZ
MDFZZ
MDFZZ
MDFZZ
MDFZZ
MDFZZ
MDFZZ
PAFZZ
XDFZZ
NDFZZ
MDFZZ
LBAD-D-52180
5305-00-958-5483 MS35190-221
90A
LBAD-C-52175
LBAD-C-33669
CL-24V40-L2R
6210-00-485-9843 250-7538-14-504
LBAD-C-52174
LBAD-D-52182
LBAD-D-52727
MS21318-18
5305-00-984-4988 MS35206-228
5305-00-889-2999 MS35206-217
5365-00-954-9301
2335
5305-00-889-2997 MS35206-215
LBAD-D-52729
LBAD-D-52183
LBAD-D-54338
LBAD-D-52190
LBAD-D-52734
LBAD-C-54324
5305-00-957-6266 MS35190-252
230-1863
LBAD-D-52181
LBAD-D-52728
21617
96906
64959
21617
21617
95146
72619
21617
21617
21617
96906
96906
96906
83330
96906
21617
21617
21617
21617
21617
21617
96906
29587
21617
21617
PANEL
SCREW, F.H.M.S. 4-40 X 1/4
STRIP, IDENTIFICATION
JACK, TELEPHONE
JACK, TELEPHONE
LAMP
HOLDER, LAMP
JACK, PUSH BUTTON
PANEL, SIDE
PLATE, IDENTIFICATION
SCREW, DRIVE #0 X 3/16 LG
SCREW, P.H.M.S. #6-32 X 3/8 LG
SCREW, P.H.M.S. #4-40 X 1/2 LG
SPACER, FIBER
SCREW, P.H.M.S; #4-40 X 3/8 LG
COVER (TOP AND BOTTOM)
CIRCUIT BOARD ASSEMBLY, FLEXIBLE
CONNECTOR ASSEMBLY (100 PIN MODIFIED)
CIRCUIT BOARD ASSEMBLY, FLEXIBLE
CIRCUIT BOARD ASSEMBLY, FLEXIBLE
PROGRAM MODULE ASSEMBLY
SCREW, F.H.M.S. #8-32 X 7/16 LG
PROGRAM BOARD
PANEL, REAR
PLATE, IDENTIFICATION
D-21
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
1
12
3
48
48
24
24
24
2
2
12
4
4
4
8
2
1
1
1
24
24
6
1
1
1
TM 11-5895-878-14&P
Figure D-8. Panel Alarm, Major/Minor, Parts Location
D-22
SECTION II REPAIR PARTS LIST
(1)
ILLUSTRATION
(a)
(b)
FIG
ITEM
NO.
NO.
(2)
SMR
CODE
D-8
D-8
D-8
D-8
D-8
D-8
D-8
D-8
D-8
D-8
D-8
D-8
D-8
D-8
D-8
D-8
D-8
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
XDFZZ
PAFZZ
PAFZZ
PAFZZ
XDFHD
XDHZZ
XDHZZ
PAHZZ
PAHZZ
XDHZZ
XDF'ZZ
PAFZZ
PAFZZ
PAFZZ
PAFZZ
XDFZZ
XDFZZ
D-8
D-8
18
19
PAOZZ
PAFZZ
(3)
NATIONAL
STOCK
NUMBER
TM 11-5895-878-14&P
(4)
PART
NUMBER
LBAD-D-33167
5305-00-889-3000 MS35206-230
5935-00-847-7840
513938
5935-00-799-2442
513936
LBAD-D-33172-GP1
LBAD-D-33171
5A4
5905-00-279-2656 RC32GF511J
5905-00-279-1922 RC42GF271J
LBAD-C-12684
MS35237-37
5310-00-983-8483 MS27183-5
5310-00-045-4007 MS35338-41
5310-00-088-0553
MS21044-5
5930-00-268-0309
138187E
138187G
90E A2C2 F3J4
(RA) L4-N1
6240-00-155-7836 MS25237-327
5925-01-031-5935 117-210-101
(5)
(6)
DESCRIPTION
FSCM
21617
96906
44038
44038
21617
21617
81483
81349
81349
21617
96906
96906
96906
96906
96182
96182
96182
81344
79405
(7)
USABLE ON CODE
U/M
(8)
QTY
INC
IN
UNIT
GROUP: 07 PANEL, ALARM - MAJOR/MINOR
LBAD-D-33161-1 (-48VDC), 21617
ALARM COVER PANEL
SCREW, (PHMS) STEEL CAD PLTD 6-32 X 1/2 LG
CONNECTOR, SERIES MTC TYPE "D"
CONNECTOR, 100 PIN
CIRCUIT BOARD ASSY (-48V)
PCB ASSY (MAJOR-MINOR)
SEMICONDUCTOR DEVICE, DIODE
RESISTOR, CARBON COMP 510 OHMS, 5% 1W
RESISTOR, CARBON COMP 270 OHMS, 5% 2W
BRACKET, CIRCUIT BOARD
SCREW, (FHMS) CAD PLTD 6-32 X 1/2 LG
WASHER, FLAT, ROUND STEEL CAD PLTD #6
WASHER, LOCK, CAD PLATED #6
NUT, HEX, 6-32
SWITCH, PUSH BUTTON
SWITCH, PUSH BUTTON
SWITCH, TELLITE
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
1
31
1
1
3
3
270
90
45
6
12
12
15
15
1
1
45
LAMP, INCANDESCENT (2 EA IN SWITCH)
CIRCUIT BREAKER
EA
EA
90
1
D-23/(D-24 BLANK)
TM 11-5895-878-14&P
Figure D-9. Assembly, Universal Alarm Panel, Parts Location (Sheet 1 of 2).
D-25
TM 11-5895-878-14&P
Figure D-9. Assembly, Universal Alarm Panel Parts Location (Sheet 2 of 2).
D-26
SECTION II REPAIR PARTS LIST
(1)
ILLUSTRATION
(a)
(b)
FIG
ITEM
NO.
NO.
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
B-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
(2)
SMR
CODE
MDFZZ
XDFZZ
PAFZZ
PAFZZ
PAFZZ
XDFZZ
MDFZZ
XDFZZ
PAFZZ
MDFHD
XDFZZ
MDFZZ
MDFZZ
PAFZZ
XDFZZ
XDFZZ
XDFZZ
PAFZZ
XDFZZ
PAFZZ
PAFZZ
MDFZZ
MDFZZ
PAFZZ
MDFZZ
XDFZZ
MDFZZ
PAFZZ
PAFZZ
PAFZZ
(3)
NATIONAL
STOCK
NUMBER
TM 11-5895-878-14&P
(4)
PART
NUMBER
(5)
FSCM
LBAD-D-54394
E6-14
5365-01-051-0884
9418
5305-00-984-6223 MS35206-236
5310-00-983-8483 MS27183-5
21617
59730
73734
96906
96906
LBAD-D-54402-2
48P-SB
6210-00-300-8825 95-1059-3171-102
LBAD-D-54398-2
NC403K
LBAD-D-54396
LBAD-D-54395
5305-00-889-3001 MS35206-231
6-164
21617
04655
72619
21617
05820
21617
21617
96906
71785
00645
90211
96906
81483
83330
96906
21617
21617
96906
21617
96906
21617
96906
96906
59730
5975-00-727-5153
5340-00-737-6389
5305-00-984-4993
5305-00-253-5608
5305-00-984-6196
5310-00-809-8544
5940-00-864-9563
U-32
MS3367-4-9
1N2130A
8503
MS35206-233
LBAD-D-54399-1
LBAD-D-54401-1
MS21318-9
LBAD-C-54406-2
MS34191-272
LBAD-D-54400-2
MS35206-248
MS27183-7
RA18-6F
(6)
DESCRIPTION
(7)
USABLE ON CODE
GROUP: 08 ASSEMBLY, UNIVERSAL ALARM PANEL,
LBAD-D-54393-2, 21617
PANEL, FRONT
TERMINAL, RING-TONGUE
SPACER, 7/32 O.D. X 1 LG
SCREW, P.H.M.S. #6-32 X 1-1/2
WASHER, FLAT #6
WIRE, #18 AWG, COPPER
NAMEPLATE, FRONT PANEL
LAMP, 48V TYPE T-2
LAMPHOLDER, RED
ASSEMBLY, RELAY BOARD
HEATSINK
SIDEFRAME
PANEL, REAR
SCREW, P.H.M.S. #6-32 X 5/8
BLACK, TERMINAL
WIRE, #6 AWG, COPPER THW
BLOCK, TERMINAL
TIES, CABLE, 0-3/4 X 4" LG
DIODE, 60 AMP
SPACER, 1/4 O.D. X 1/2 LG
SCREW, P.H.M.S. #6-32 X 7/8
NAMEPLATE, TERMINAL BLOCK (TB-1)
NAMEPLATE, TERMINAL BLOCK (TB-2)
SCREW, DRIVE #0-3/16 LG
NAMEPLATE, FABRICATION
SCREW, F.H.M.S. 10-32 X 1/2
NAMEPLATE, DIODE
SCREW, P.H.M.S. #8-32 X 7/8
WASHER, FLAT #8
TERMINAL, FORK TONGUE #6
D-27
U/M
EA
EA
EA
EA
EA
FT
EA
EA
EA
EA
EA
EA
EA
EA
EA
FT
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
(8)
QTY
INC
IN
UNIT
1
2
4
4
16
V
1
2
2
1
2
2
1
4
1
V
2
V
2
8
8
1
1
10
1
12
1
4
4
8
SECTION II REPAIR PARTS LIST
(1)
ILLUSTRATION
(a)
(b)
FIG
ITEM
NO.
NO.
(2)
SMR
CODE
(3)
NATIONAL
STOCK
NUMBER
TM 11-5895-878-14&P
(4)
PART
NUMBER
(5)
(6)
DESCRIPTION
FSCM
(7)
USABLE ON CODE
U/M
(8)
QTY
INC
IN
UNIT
GROUP: 09 ASSEMBLY, UNIVERSAL ALARM PANEL,
LBAD-D-54393-3, 21617
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
MDFZZ
XDFZZ
PAFZZ
PAFZZ
PAFZZ
XDFZZ
MDFZZ
XDFZZ
PAFZZ
MDFHD
XDFZZ
MDFZZ
MDFZZ
PAFZZ
XDFZZ
XDFZZ
XDFZZ
PAFZZ
XDFZZ
PAFZZ
PAFZZ
MDFZZ
MDFZZ
PAFZZ
MDFZZ
XDFZZ
MDFZZ
PAFZZ
PAFZZ
PAFZZ
LBAD-D-54394
E6-14
5365-01-051-0884
9418
5305-00-984-6223 MS35206-236
5310-00-983-8483 MS27183-5
21617
59730
73734
96906
96906
LBAD-D-54402-3
24P-SB
6210-00-300-8825 95-1059-3171-102
LBAD-D-54398-1
NC403K
LBAD-D-54396
LBAD-D-54395
5305-00-889-3001 MS35206-231
6-164
21617
04655
72619
21617
05820
21617
21617
96906
71785
00645
90211
96906
81483
83330
96906
21617
21617
96906
21617
96906
21617
96906
96906
59730
5975-00-727-5153
5340-00-737-6389
5305-00-984-4993
5305-00-253-5608
5305-00-984-6196
5310-00-809-8544
5940-00-864-9563
U-32
MS3367-4-9
1N1183
8503
MS35206-233
LBAD-D-54399-2
LBAD-D-54401-2
MS21318-9
LBAD-C-54406-3
MS34191-272
LBAD-D-54400-3
MS35206-248
MS27183-7
RA18-6F
PANEL, FRONT
TERMINAL, RING-TONGUE
SPACER, 7/32 O.D. X 1 LG
SCREW, P.H.M.S. #6-32 X 1-1/2
WASHER, FLAT, #6
WIRE, #18 AWG, COPPER
NAMEPLATE, FRONT PANEL
LAMP, 24V TYPE T-2
LAMPHOLDER, RED
ASSEMBLY, RELAY BOARD
HEATSINK
SIDEFRAME
PANEL, REAR
SCREW, P.H.M.S. #6-32 X 5/8
BLACK, TERMINAL
WIRE, #8 AWG, COPPER, THW
BLOCK, TERMINAL
TIES, CABLE, 0-3/4 X 4" LG
DIODE, 40 AMP
SPACER, 1/4 O.D. X 1/2 LG
SCREW, P.H.M.S. #6-32 X 7.8
NAMEPLATE, TERMINAL BLOCK (TB-1)
NAMEPLATE, TERMINAL BLOCK (TB-2)
SCREW, DRIVE #0-3/16 LG
NAMEPLATE, FABRICATION
SCREW, F.H.M.S. 10-32 X 1/2
NAMEPLATE, DIODE
SCREW, P.H.M.S. #8-32 X 7/8
WASHER, FLAT #8
TERMINAL, FORK TONGUE #6
D-28/(D-29 BLANK)
EA
EA
EA
EA
EA
FT
EA
EA
EA
EA
EA
EA
EA
EA
EA
FT
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
1
2
4
4
16
V
1
2
2
1
2
2
1
4
1
V
2
V
2
8
8
1
1
10
1
12
1
4
4
8
TM 11-5895-878-14&P
Figure D-10. Relay Board Assembly, Parts Location.
D-30
SECTION II REPAIR PARTS LIST
(1)
ILLUSTRATION
(a)
(b)
FIG
ITEM
NO.
NO.
(2)
SMR
CODE
D-10
D-10
D-10
D-10
D-10
D-10
1
2
3
4
5
6
MDFZZ
PAFZZ
XDFZZ
XDFZZ
XDFZZ
XDFZZ
D-10
D-10
D-10
D-10
D-10
D-10
1
2
3
4
5
6
MDFZZ
PAFZZ
XDFZZ
XDFZZ
XDFZZ
XDFZZ
(3)
NATIONAL
STOCK
NUMBER
5945-00-758-1335
5945-00-758-1335
TM 11-5895-878-14&P
(4)
PART
NUMBER
(5)
(6)
DESCRIPTION
FSCM
MP54403
30040-1
T154-2C-48VDC
125220
22AWG
30055-5
21617
70309
70309
73734
23172
70309
MP54403
30040-1
T154-2C-24VDC
125220
22AWG
30055-5
21617
70309
70309
73734
23172
70309
(7)
USABLE ON CODE
GROUP: 10 RELAY BOARD ASSEMBLY,
LBAD-D-54398-2, 21617
BOARD, PRINTED CIRCUIT
RETAINER, RELAY
RELAY, DPDT
TERMINAL TURRENT
WIRE, JUMPER: BARE
SOCKET, RELAY
GROUP: 11 RELAY BOARD ASSEMBLY,
LBAD-D-54398-1, 21617
BOARD, PRINTED CIRCUIT
RETAINER, RELAY
RELAY, DPDT
TERMINAL TURRENT
WIRE, JUMPER: BARE
SOCKET, RELAY
D-31
U/M
(8)
QTY
INC
IN
UNIT
EA
EA
EA
EA
FT
EA
1
1
2
7
V
2
EA
EA
EA
EA
FT
EA
1
1
2
7
V
2
TM 11-5895-878-14&P
Figure D-11. Assembly, Audible Alarm Panel, Parts Location
D-32
SECTION II REPAIR PARTS LIST
(1)
ILLUSTRATION
(a)
(b)
FIG
ITEM
NO.
NO.
(2)
SMR
CODE
D-11
D-11
D-11
1
2
3
MDFZZ
PAFZZ
XDFZZ
D-11
D-11
D-11
D-11
D-11
D-11
D-11
D-11
D-11
D-11
D-11
D-11
D-11
4
5
6
7
8
9
10
11
12
13
14
15
16
XDFZZ
XDFZZ
PAFZZ
PAFZZ
XDFZZ
PAFZZ
PAFZZ
PAFZZ
PAFZZ
PAFZZ
XDFZZ
PAFZZ
PAFZZ
(3)
NATIONAL
STOCK
NUMBER
6350-00-071-2492
5935-00-302-6343
5930-00-823-0018
5905-00-279-1757
5940-00-864-9563
5305-00-958-5457
5310-00-934-9739
5305-00-958-5456
6145-00-652-1441
5310-00-950-1310
TM 11-5895-878-14&P
(4)
PART
NUMBER
LBAD-D-52159
SC628P
51-0901-0131301
CRD48-40010
902098-64
146-103
903
4-140
RC20GF152J
RA18-6F
MS35190-226
MS35649-242
MS35190-230
6S6-50VDC
8507
MS27183-4
(5)
(6)
DESCRIPTION
FSCM
(7)
USABLE ON CODE
U/M
(8)
QTY
INC
IN
UNIT
21617
06124
GROUP: 12 ASSEMBLY, AUDIBLE ALARM PANEL,
LBAD-D-52158, 21617
PANEL, AUDIBLE ALARM
ALARM, SONARLERT
EA
EA
1
1
72619
93929
93929
02660
82389
71785
81349
59730
96906
96906
96906
71744
70903
96906
LIGHT, PANEL
RELAY, 48 VDC
FLASHER, ELECTRONIC, 48 VDC
SOCKET, RELAY
SWITCH
BLOCK, TERMINAL
RESISTOR, COMPOSITION, 1.5K OHM, 1/2W, PORM 5%
TERMINAL, FORK TONGUE
SCREW, F.H.M.S. #4-40 X 5/8 LG
NUT, HEX, #4-40
SCREW, F.H.M.S. #4-40 X 1-1/4 LG
LAMP, CANDLELABRA
WIRE, 20 AWG
WASHER, FLAT #4
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
FT
EA
2
1
1
2
1
1
1
20
4
8
4
2
20
8
D-33
TM 11-5895-878-14&P
Figure D-12. Meter Panel Assembly, 0 ± 15VDC, Parts Location.
D-34
SECTION II REPAIR PARTS LIST
(1)
ILLUSTRATION
(a)
(b)
FIG
ITEM
NO.
NO.
(2)
SMR
CODE
(3)
NATIONAL
STOCK
NUMBER
TM 11-5895-878-14&P
(4)
PART
NUMBER
(5)
(6)
DESCRIPTION
FSCM
(7)
USABLE ON CODE
U/M
(8)
QTY
INC
IN
UNIT
GROUP: 13 METER PANEL ASSEMBLY 0 ±15VDC,
LBAD-D-52721, 21617
D-12
D-12
1
2
MDFZZ
XDFHD
LBAD-D-52722
524
21617
16902
PANEL
METER, VOLT, 0 PORM L5 VDC, 4-1/2"
D-35
EA
EA
1
1
TM 11-5895-878-14&P
Figure D-13. Meter Panel Assembly, ±150 VDC, Parts Location.
D-36
SECTION II REPAIR PARTS LIST
(1)
ILLUSTRATION
(a)
(b)
FIG
ITEM
NO.
NO.
(2)
SMR
CODE
(3)
NATIONAL
STOCK
NUMBER
TM 11-5895-878-14&P
(4)
PART
NUMBER
(5)
(6)
DESCRIPTION
FSCM
(7)
USABLE ON CODE
U/M
(8)
QTY
INC
IN
UNIT
GROUP: 14 METER PANEL ASSEMBLY ±150VDC,
LBAD-D-52731, 21617
D-13
D-13
D-13
1
2
3
MDFZZ
XDFHD
XDFHD
LBAD-D-52732
50-251-321-PZPZ
50-251-301-JXJX
21617
29834
29834
PANEL
METER, VOLT
METER, MILLIAMMETER
D-37
EA
EA
EA
1
1
1
TM 11-5895-878-14&P
Figure D-14. Meter Panel Assembly, 24VDC, Parts Location.
D-38
SECTION II REPAIR PARTS LIST
(1)
ILLUSTRATION
(a)
(b)
FIG
ITEM
NO.
NO.
(2)
SMR
CODE
(3)
NATIONAL
STOCK
NUMBER
TM 11-5895-878-14&P
(4)
PART
NUMBER
(5)
(6)
DESCRIPTION
FSCM
(7)
USABLE ON CODE
U/M
(8)
QTY
INC
IN
UNIT
GROUP: 15 METER PANEL ASSEMBLY, 24VDC
LBAD-D-52170-5, 21617
D-14
D-14
D-14
1
2
3
MDFZZ
XDFHD
XDFHD
LBAD-D-52171
MODEL52331/2"
MODEL52331/2"
21617
55026
55026
D-14
D-14
D-14
1
2
3
MDFZZ
XDFHD
XDFHD
LBAD-D-52171
MODEL52331/2"
MODEL52331/2"
21617
55026
55026
PANEL, FRONT
VOLTMETER, 0 PORM 50 VDC, ZERO CENTER
AMMETER, 0-50 AMPS., ZERO LEFT
GROUP: 16 METER PANEL ASSEMBLY ±6VDC,
LBAD-D-52170-1, 21617
PANEL, FRONT
VOLTMETER, 0 PORM 7.5 VDC
AMMETER, 0 PORM 2.5 A
D-39
EA
EA
EA
1
2
2
EA
EA
EA
1
2
2
TM 11-5895-878-14&P
Figure D-15. Connectorized Circuit Concentration Panel Assembly, Parts Location.
D-40
SECTION II REPAIR PARTS LIST
(1)
ILLUSTRATION
(a)
(b)
FIG
ITEM
NO.
NO.
(2)
SMR
CODE
(3)
NATIONAL
STOCK
NUMBER
TM 11-5895-878-14&P
(4)
PART
NUMBER
(5)
(6)
DESCRIPTION
FSCM
(7)
USABLE ON CODE
U/M
(8)
QTY
INC
IN
UNIT
GROUP: 17 CONNECTORIZED CIRCUIT
CONCENTRATION PANEL ASSEMBLY
D-15
D-15
D-15
D-15
D-15
D-15
1
2
3
4
5
6
XDFZZ
XDFZZ
XDFZZ
XDFZZ
XDFZZ
XDFZZ
57-10640-11
230-10143
230-10158-A01
230-94618-07
34-1229
230-843-33-203
29587
29587
29587
29587
29587
29587
CONNECTOR, PLUG
SCREW #10-24 NC
PANEL, FRONT
PANEL, BACK
SCREW, P.H.M.S. 10-16
CONNECTOR - SNAP - WRAP
D-41
EA
EA
EA
EA
EA
EA
30
60
1
1
4
10
TM 11-5895-878-14&P
Figure D-16. Panel Dual Speaker, Parts Location.
D-42
SECTION II REPAIR PARTS LIST
(1)
ILLUSTRATION
(a)
(b)
FIG
ITEM
NO.
NO.
(2)
SMR
CODE
(3)
NATIONAL
STOCK
NUMBER
TM 11-5895-878-14&P
(4)
PART
NUMBER
(5)
(6)
DESCRIPTION
FSCM
(7)
USABLE ON CODE
U/M
(8)
QTY
INC
IN
UNIT
GROUP: 18 PANEL DUAL SPEAKER, ENGINEERING
DEVICES CO., LEXINGTON, KY.
D-16
D-16
D-16
D-16
D-16
D-16
D-16
D-16
D-16
D-16
D-16
D-16
D-16
D-16
D-16
D-16
D-16
D-16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
XDFZZ
XDOZZ
PAOZZ
XDOZZ
XDOZZ
XDOZZ
XDOZZ
PAOZZ
XDOZZ
PAOZZ
PAOZZ
XDOZZ
XDOZZ
XDOZZ
PAOZZ
XDOZZ
XDOZZ
XDFDD
5910-00-079-7044
5905-00-195-6502
5905-00-279-1761
5961-00-914-6005
5961-00-274-2702
DSP-102-DSP-105
2-140Y
39D
MDL
HKP
WMT-334B
TYPE J
RC20GF332K
RC32GF332K
RC20GF62IJ
1N4004
7501Kl3
VM15-FPB
S-4682-1
FLV-102
FLS-001
SMS
6912
71785
56289
71400
71400
82389
01121
81349
81349
81349
04713
27191
00348
13715
13715
05487
CHASSIS
BARRIER STRIP
CAPACITOR, 500MF, 5OVDC
FUSE 0.4A
FUSEHOLDER
JACK
RESISTOR, VARIABLE
RESISTOR, FIXED, COMPOSITION, 3300 OHM, 1/2W, 10%
RESISTOR, FIXED, COMPOSITION, 3300 OHM, 1W, 10%
RESISTOR, FIXED, COMPOSITION 620 OHM 1/2W, 5%
SEMICONDUCTOR DEVICE
SWITCH, SPST
TRANSFORMER
SPEAKER, 5"t 45 OHM
DIODE, LIGHT EMITTING
HOLDER
CONNECTOR
AMPLIFIER, 5 WATT, MFR ENGINEERING DEVICE CO. LEXINGTON, KY.
D-43
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
1
3
1
1
1
2
2
2
1
1
1
3
2
2
1
1
2
2
TM 11-5895-878-14&P
Figure D-17. Amplifier, 5 Watt, Parts Location.
D-44
SECTION II REPAIR PARTS LIST
(1)
ILLUSTRATION
(a)
(b)
FIG
ITEM
NO.
NO.
D-17
D-17
D-17
D-17
D-17
D-17
D-17
D-17
D-17
D-17
D-17
D-17
D-17
D-17
D-17
D-17
D-17
D-17
D-17
D-17
D-17
D-17
D-17
D-17
D-17
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
(2)
SMR
CODE
XDFZZ
PAFZZ
PAFZZ
XDFZZ
XDFZZ
PAFZZ
PAFZZ
PAFZZ
XDFZZ
PAFZZ
XDFZZ
PAFZZ
PAFZZ
XDFZZ
PAFZZ
XDFZZ
PAFZZ
XDFZZ
XDFZZ
XDFZZ
PAFZZ
XDFZZ
XDFZZ
XDFZZ
XDFZZ
(3)
NATIONAL
STOCK
NUMBER
TM 11-5895-878-14&P
(4)
PART
NUMBER
5905-00-192-9260 RC20GF154K
5905-00-192-0662 RC20GF184K
TYPE J
RC20GF333K
5961-00-145-5991
2N5172
5905-00-195-5514 RC20GF152K
5905-00-185-8518 RC20GF103K
5961-00-146-3979
2N5354
RC20GFIROK
5905-00-171-2005 RC20GF471K
5905-00-245-0023 RC20GF682K
5905-00-186-3008 RC20GF101K
RC20GF470K
5905-00-195-6451 RC20GF472K
5961-00-497-9132
40372
2N2568
RC20GF102K
3AG
Q5P33
(5)
(6)
DESCRIPTION
FSCM
56289
81349
81349
01121
81349
03508
81349
81349
56289
81349
81349
81349
81349
56289
81349
81349
81349
56289
56289
59303
04713
81349
75915
01304
(7)
USABLE ON CODE
GROUP: 1801 AMPLIFIER, 5 WATT #6912
CAPACITOR, ELECTROLYTIC: 10 MFD, 63 VDC
RESISTOR, FIXED COMPOSITION:150000 OHM 1/2W, ±10%
RESISTOR, FIXED COMPOSITION2180000 OHM 1/2W, ±10%
POTENTIOMETER: 50000 OHM
RESISTOR, FIXED COMPOSITION: 33000 OHM 1/2W, +10%
TRANSISTOR
RESISTOR, FIXED COMPOSITION:1500 OHM, 1/2W, ±10%
RESISTOR, FIXED COMPOSITION:10000 OHM, 1/2W, ±10%
CAPACITOR, FIXED: 330 PF 1KV
TRANSISTOR
RESISTOR, FIXED COMPOSITION: 1 OHM, 1/2W, ±10%
RESISTOR, FIXED COMPOSITION:470 OHM 1/2W, ±.10%
RESISTOR, FIXED COMPOSITION:6900 OHM, 1/2W, ±10%
CAPACITOR, ELECTROLYTIC: .047 MFD 10OOVDC
RESISTOR, FIXED COMPOSITION:100 OHM 1/2W, ±.10%
RESISTOR, FIXED COMPOSITION:47 OHM, 1/2W, ±10%
RESISTOR, FIXED COMPOSITION:4700 OHM 1/2W, ±10%
CAPACITOR, ELECTROLYTIC: 100 MFD, 40 VDC
*COIL
CAPACITOR, ELECTROLYTIC: 50 MFD, 40 VDC
TRANSISTOR
TRANSISTOR
RESISTOR, FIXED COMPOSITION: 1000 OHM, 1/2W, ±10%
FUSE 1/2 A
CAPACITOR: 33 MFD, 50 VDC
*COIL L-1: 30 TURNS #22 INS. WIRE WOUND ON ITEM 19
D-45
U/M
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
(8)
QTY
INC
IN
UNIT
1
1
1
1
1
2
1
2
1
2
2
2
2
1
1
1
1
1
1
1
2
1
1
1
1
TM 11-5895-878-14&P
Figure D-18. Alarm Panel Assembly, CAU/CCU Parts location.
Figure D-19. Alarm Panel P.C.B. Assembly, Parts Location
D-46
SECTION II REPAIR PARTS LIST
(1)
ILLUSTRATION
(a)
(b)
FIG
ITEM
NO.
NO.
D-18
D-18
D-18
D-18
D-18
D-18
D-18
D-18
D-18
D-18
D-18
D-18
D-18
D-18
D-18
D-18
D-18
D-18
D-18
D-18
D-18
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
(2)
SMR
CODE
MDFZZ
MDFZZ
MDFHD
MDFZZ
MDFZZ
XDFZZ
XDFZZ
PAFZZ
PAFZZ
MDFZZ
XDHZZ
XDFZZ
PAFZZ
XDFZZ
PAFZZ
PAFZZ
PAFZZ
PAFZZ
PAFZZ
PAFZZ
PAFZZ
(3)
NATIONAL
STOCK
NUMBER
5305-00-889-3000
5305-00-889-2999
5365-00-954-9301
5310-00-934-9739
5310-00-782-1349
5305-00-957-6264
5305-00-958-6230
5305-00-958-5453
5305-00-059-4550
5305-00-957-6636
TM 11-5895-878-14&P
(4)
PART
NUMBER
LBAD-D-54409
LBAD-D-54408
LBAD-D-54413
LBAD-D-54411
LBADLD-54410
411
5-104-Y
M535206-230
MS535206-217
LBAD-C-54443
MS21318-8
8502
2335
8883
MS35649-242
M515795-804
M535190-225
M535190-224
MS35190-236
MS35190-235
MS35190-223
(5)
(6)
DESCRIPTION
FSCM
21617
21617
21617
21617
21617
75382
27361
96906
96906
21617
96906
70903
83330
83330
96906
96906
96906
96906
96906
96906
96906
(7)
USABLE ON CODE
GROUP: 19 ALARM PANEL ASSEMBLY, CAU/CCU:
LBAD-D-54327, 21617
FRAME, ALARM PANEL
PANEL, FRONT
PC BOARD ASSEMBLY
PANEL, BOTTOM COVER
STIFFENER
BLOCK, TERMINALI 20 TERMINALS
BLOCK, TERMINALI 5 TERMINALS
SCREW, P.H.MS.S #6-32 X 1/2 LG
SCREW, P.H.M.S. #4-40 X 1/2 LG
NAMEPLATE
SCREW, #0 X 3/16 LG
WIRE #20 AWG, COPPER, BLACK
SPACER, SLEEVE
SPACER, FIBER
NUT, HEX, #4-40
WASHER, FLAT #4
SCREW, F.H.M.S. #4-40 X 1/2 LG
SCREW, F.H.M.S. #4-40 X 7/8 LG
SCREW, F.H.M.S. #6-32 X 3/8 LG
SCREW, F.H.M.S. #6-32 X 5/16 LG
SCREW, F.H.M.S. #4-40 X 3/8 LG
D-47
U/M
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
EA
IN
EA
EA
EA
EA
EA
EA
EA
EA
EA
(8)
QTY
INC
IN
UNIT
1
1
1
1
1
2
1
4
4
1
2
96
4
2
6
6
4
2
4
4
1
SECTION II REPAIR PARTS LIST
(1)
ILLUSTRATION
(a)
(b)
FIG
ITEM
NO.
NO.
D-19
D-19
D-19
D-19
D-19
D-19
D-19
D-19
1
2
3
4
5
6
7
8
(2)
SMR
CODE
MDFZZ
XDFHD
PAFZZ
PAFZZ
PAFZZ
PAFZZ
XDFZZ
XDFZZ
(3)
NATIONAL
STOCK
NUMBER
5905-00-185-8510
5961-00-931-0372
5961-00-892-8706
5961-00-669-6884
TM 11-5895-878-14&P
(4)
PART
NUMBER
MP54414
TW 6-200
RC20GF103J
2N3906
2N3904
1N277
W171D1P7
(5)
(6)
DESCRIPTION
FSCM
21617
98853
81349
04713
04713
81349
80266
94696
(7)
USABLE ON CODE
GROUP 1901 ALARM PANEL P.C.B. ASSEMBLY
LBAD-D-54413, 21617
P.C. BOARD ALARM PANEL
POWER SUPPLY, 6 VDC
RESISTOR, COMPOSITION; 10K OHMS, 1/2W, PROM 5%
TRANSISTOR
TRANSISTOR
SEMICONDUCTOR
SOCKET, I.C. 14 PIN, P.C.B. MTG.
RELAY, 3.8 VDC, SPST-NO
D-49
U/M
EA
EA
EA
EA
EA
EA
EA
EA
(8)
QTY
INC
IN
UNIT
1
1
2
1
1
40
2
2
SECTION IV NATIONAL STOCK NUMBER AND PART NUMBER INDEX
STOCK NUMBER
5310-00-045-4007
5305-00-059-4550
5910-00-079-7044
5310-00-081-8087
5310-00-081-8087
5310-00-081-8087
5310-00-081-8087
5310-00-088-0551
5310-00-088-0551
5310-00-088-0551
5310-00-088-0553
5905-00-105-7768
5905-00-116-8567
5961-00-145-5991
5961-00-146-3979
5305-00-151-1321
6240-00-155-7836
5905-00-171-2005
5905-00-185-8510
5905-00-185-8518
5905-00-186-3008
5905-00-192-0662
5905-00-192-9260
5905-00-195-5514
5905-00-195-6451
5905-00-195-6502
5310-00-209-0788
5310-00-209-0788
5310-00-209-0788
5310-00-209-0788
5905-00-245-0023
5305-00-253-5607
5305-00-253-5607
5305-00-253-5607
5305-00-253-5608
5305-00-253-5608
5930-00-268-0309
5961-00-274-2702
5905-00-2'79-1757
5905-00-2'79-1761
5905-00-2'79-1922
5905-00-2'79-2656
6210-00-300-8825
6210-00-300-8825
5935-00-302-6343
6210-00-485-9843
5961-00-497-9132
6145-00-652-1441
5961-00-669-6884
5975-00-727-5153
5975-00-727-5153
FIGURE
NO.
D-8
D-18
D-16
D-1
D-2
D-3
D-4
D-1
D-2
D-3
D-8
D-6
D-6
D-17
D-17
D-5
D-8
D-17
D-19
D-17
D-17
D-17
D-17
D-17
D-17
D-16
D-1
D-2
D-3
D-4
D-17
D-1
D-2
D-4
D-9
D-9
D-8
D-16
D-11
D-16
D-8
D-8
D-9
D-9
D-11
D-7
D-17
D-11
D-19
D-9
D-9
ITEM
NO.
STOCK NUMBER
13
20
3
16
15
18
12
19
19
23
14
4
2
6
10
4
18
12
3
8
15
3
2
7
17
8
12
9
15
22
13
3
4
19
24
24
15
15
9
10
9
8
9
9
6
7
21
15
6
18
18
5340-00-737-6389
5340-00-737-6389
5945-00-758-1335
5945-00-758-1335
5310-00-782-1349
5935-00-799-2442
5310-00-809-8544
5310-00-809-8544
5930-00-823-0018
5935-00-847-7840
5940-00-864-9563
5940-00-864-9563
5940-00-864-9563
5305-00-889-2997
5305-00-889-2999
5305-00-889-2999
5305-00-889-2999
5305-00-889-2999
5305-00-889-2999
5305-00-889-2999
5305-00-889-3000
5305-00-889-3000
5305-00-889-3001
5305-00-889-3001
5305-00-889-3116
5305-00-889-3116
5305-00-889-3116
5305-00-889-3116
5961-00-892-8706
5961-00-914-6005
5961-00-931-0372
5310-00-934-9739
5310-00-934-9739
5310-00-950-1310
5365-00-954-9301
5365-00-954-9301
5365-00-954-9301
5365-00-954-9301
5365-00-954-9301
5365-00-954-9301
5305-00-957-6264
5305-00-957-6266
5305-00-957-6636
5305-00-958-5453
5305-00-958-5456
5305-00-958-5457
5305-00-958-5483
5305-00-958-5483
5305-00-958-5483
5305-00-958-5483
5305-00-958-5483
D-50
FIGURE
NO.
D-9
D-9
D-10
D-10
D-18
D-8
D-9
D-9
D-11
D-8
D-9
D-9
D-11
D-7
D-1
D-2
D-3
D-4
D-7
D-18
D-8
D-18
D-9
D-9
D-1
D-2
D-3
D-4
D-19
D-16
D-19
D-11
D-18
D-11
D-1
D-2
D-3
D-4
D-7
D-18
D-18
D-7
D-18
D-18
D-11
D-11
D-1
D-2
D-3
D-4
D-7
ITEM
NO.
20
20
2
2
16
4
29
29
7
3
30
30
10
15
10
11
13
21
13
9
2
8
14
14
18
18
22
23
5
11
4
12
15
16
9
10
12
7
14
13
17
22
21
19
13
11
6
6
6
20
2
TM 11-5895-878-14&P
SECTION IV NATIONAL STOCK NUMBER AND PART NUMBER INDEX (CONTINUED)
STOCK NUMBER
5305-00-958-6230
5310-00-983-8483
5310-00-983-8483
5310-00-983-8483
5305-00-984-4988
5305-00-984-4988
5305-00-984-4988
5305-00-984-4988
5305-00-984-4988
5305-00-984-4993
5305-00-984-4993
5305-00-984-6196
5305-00-984-6196
5305-00-984-6223
5305-00-984-6223
5305-00-984-7361
5305-00-984-7361
5305-00-984-7361
5305-00-984-7361
5305-00-995-6653
5305-00-995-6653
5305-00-995-6653
5305-00-995-6653
5925-01-031-5935
5935-01-049-0049
5365-01-051-0884
5365-01-051-0884
FIGURE
NO.
D-18
D-8
D-9
D-9
D-1
D-2
D-3
D-4
D-7
D-9
D-9
D-9
D-9
D-9
D-9
D-1
D-2
D-3
D-4
D-1
D-2
D-3
D-4
D-8
D-6
D-9
D-9
ITEM
NO.
STOCK NUMBER
18
12
5
5
11
8
14
8
12
21
21
28
28
4
4
22
21
26
17
21
20
25
16
19
1
3
3
D-51
FIGURE
NO.
ITEM
NO.
TM 11-5895-878-14&P
SECTION IV NATIONAL STOCK NUMBER AND PART NUMBER INDEX (CONTINUED)
PART
NUMBER
CL-24V40-L2R
CRD48-40010
DSP-102-DSP-105
E6-14
E6-14
FLS-001
FLV-102
HKP
LBAD-C-12684
LBAD-C-33442
LBAD-C-33442
LBAD-C-33669
LBAD-C-52174
LBAD-C-52175
LBAD-C-54324
LBAD-C-54406-2
LBAD-C-54406-3
LBAD-D-12377
LBAD-D-12377
LBAD-D-28579
LBAD-D-28579
LBAD-D-28580-1
LBAD-D-28580-51
LBAD-D-28580-52
LBAD-D-28580-5
LBAD-D-33167
LBAD-D-33171
LBAD-D-33172-GP1
LBAD-D-33369
LBAD-D-33441
LBAD-D-33443-1
LBAD-D-33443-2
LBAD-D-33444
LBAD-D-33445-3
LBAD-D-33655
LBAD-D-33655
LBAD-D-33656
LBAD-D-33556
LBAD-D-33658
LBAD-D-33658
LBAD-D-33658
LBAD-D-33659
LBAD-D-33660
LBAD-D-33660
LBAD-D-33664
LBAD-D-33665-2
LBAD-D-33665-2
LBAD-D-33665-2
LBAD-D-33665-3
LBAD-D-33666
LBAD-D-33667
LBAD-D-33668
LBAD-D-33668
LBAD-D-33670
LBAD-D-33670
LBAD-D-33671
LBAD-D-33672-1
FSCM
95146
93929
59730
59730
13715
13715
71400
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
44038
21617
21617
21617
21617
64959
21617
21617
21617
FIG.
NO.
D-7
D-11
D-16
D-9
D-9
D-16
D-16
D-16
D-8
D-5
D-5
D-7
D-7
D-7
D-7
D-9
D-9
D-2
D-3
D-1
D-4
D-2
D-4
D-1
D-3
D-8
D-8
D-8
D-3
D-5
D-5
D-5
D-5
D-5
D-2
D-3
D-1
D-4
D-1
D-2
D-4
D-1
D-2
D-3
D-4
D-1
D-2
D-3
D-4
D-1
D-3
D-1
D-4
D-2
D-3
D-3
D-1
ITEM
NO.
6
4
1
2
2
16
15
5
10
7
12
5
8
4
21
25
25
2
16
4
3
3
2
2
2
1
6
5
7
1
2
5
3
8
1
1
1
1
20
12
15
13
14
20
10
15
16
19
13
8
4
7
4
7
5
17
17
PART
NUMBER
LBAD-D-33672-2
LBAD-D-33672-6
LBAD-D-33672-8
LBAD-D-33675
LBAD-D-33681
LBAD-D-33686
LBAD-D-33699
LBAD-D-33699
LBAD-D-33702
LBAD-D-52159
LBAD-D-52171
LBAD-D-52171
LBAD-D-52180
LBAD-D-52181
LBAD-D-52182
LBAD-D-52183
LBAD-D-52190
LBAD-D-52722
LBAD-D-52727
LBAD-D-52728
LBAD-D-52729
LBAD-D-52732
LBAD-D-52734
LBAD-D-54338
LBAD-D-54394
LBAD-D-54394
LBAD-D-54395
LBAD-D-54395
LBAD-D-54396
LBAD-D-54396
LBAD-D-54398-1
LBAD-D-54398-2
LBAD-D-54399-1
LBAD-D-54399-2
LBAD-D-54400-2
LBAD-D-54400-3
LBAD-D-54401-1
LBAD-D-54401-2
LBAD-D-54402-2
LBAD-D-54402-3
LBAD-D-54408
LBAD-D-54409
LBAD-D-54410
LBAD-D-54411
LBAD-D-54413
LBAD-C-54443
LBAD-D-54465
MDL
MODEL523 3 1/2"
MODEL523 3 1/2"
MODEL523 3 1/2"
MODEL523 3 1/2"
MP54403
MP54403
MP54414
MS15795-804
MS21044-N04
D-52
FSCM
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
21617
71400
55026
55026
55026
55026
21617
21617
21617
96906
96906
FIG
NO.
ITEM
NO.
D-2
D-4
D-3
D-1
D-2
D-3
D-3
D-4
D-4
D-11
D-14
D-14
D-7
D-7
D-7
D-7
D-7
D-12
D-7
D-7
D-7
D-13
D-7
D-7
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-18
D-18
D-18
D-18
D-18
D-18
D-5
D-16
D-14
D-14
D-14
D-14
D-10
D-10
D-19
D-18
D-1
17
14
21
14
13
24
8
6
11
1
1
1
1
24
9
17
19
1
10
25
16
1
20
18
1
1
13
13
12
12
10
10
22
22
27
27
23
23
7
7
2
1
5
4
3
10
11
4
2
2
3
3
1
1
1
16
19
TM 11-5895-878-14&P
SECTION IV NATIONAL STOCK NUMBER AND PART NUMBER INDEX (CONTINUED)
PART
NUMBER
MS21044-N04
MS21044-N04
MS21044-N04
MS21044-N06
MS21044-N06
MS21044-N06
MS21044-N06
MS21044-5
MS21318-18
MS21318-18
MS21318-8
MS21318-8
MS21318-8
MS21318-8
MS21318-9
MS21318-9
MS25237-327
MS27183-4
MS27183-5
MS27183-5
MS27183-5
MS27183-7
MS27183-7
MS3367-4-9
MS3367-4-9
MS34191-272
MS34191-272
MS35190-221
MS35190-221
MS35190-221
MS35190-221
NS35190-221
MS35190-222
MS35190-222
MS35190-222
MS35190-222
MS35190-223
MS35190-224
MS35190-225
MS35190-226
MS35190-230
MS35190-235
MS35190-236
MS35190-252
MS35191-270
MS35191-270
MS35191-270
MS35191-270
MS35198-12
MS35198-17
MS35206-213
MS35206-213
MS35206-213
MS35206-213
MS35206-215
MS35206-217
MS35206-217
FSCM
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
81344
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
FIG.
NO.
D-2
D-3
D-4
D-1
D-2
D-3
D-4
D-8
D-3
D-7
D-1
D-2
D-4
D-18
D-9
D-9
D-8
D-11
D-8
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-9
D-1
D-2
D-3
D-4
D-7
D-1
D-2
D-3
D-4
D-18
D-18
D-18
D-11
D-11
D-18
D-18
D-7
D-1
D-2
D-3
D-4
D-5
D-5
D-1
D-2
D-3
D-4
D-7
D-1
D-2
ITEM
NO.
19
23
24
16
15
18
12
14
11
11
3
4
19
11
24
24
18
16
12
5
5
29
29
18
18
26
26
6
6
6
20
2
21
20
25
16
21
18
17
11
13
20
19
22
22
21
26
17
4
6
18
18
22
23
15
10
11
PART
NUMBER
MS35206-217
MS35206-217
MS35206-217
MS35206-217
MS35206-228
MS35206-228
MS35206-228
MS35206-228
MS35206-228
MS35206-230
MS35206-230
MS35206-231
MS35206-231
MS35206-233
MS35206-233
MS35206-236
MS35206-236
MS35206-248
MS35206-248
MS35237-37
MS35335-30
MS35335-30
MS35335-30
MS35335-30
MS35338-41
MS35649-242
MS35649-242
NC403K
NC403K
PJ-152
PJ-152
PL-76
RA18-6F
RA18-6F
RA18-6F
RCR07G561JS
RCR20G750JS
RC20GF1R0K
RC20GF101K
RC20GF102K
RC20GF103J
RC20GF103K
RC20GF152J
RC20GF152K
RC20GF154K
RC20GF184K
RC20GF332K
RC20GF333K
RC20GF470K
RC20GF471K
RC20GF472K
RC20GF621J
RC20GF682K
RC32GF332K
RC32GF511J
RC42GF271J
SC628P
D-53
FSCM
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
96906
05820
05820
70674
70674
14949
59730
59730
59730
81349
81349
81349
81349
81349
81349
81349
81349
81349
81349
81349
81349
81349
81349
81349
81349
81349
81349
81349
81349
81349
06124
FIG
NO.
ITEM
NO.
D-3
D-4
D-7
D-18
D-1
D-2
D-3
D-4
D-7
D-8
D-18
D-9
D-9
D-9
D-9
D-4
D-9
D-9
D-9
D-8
D-1
D-2
D-3
D-4
D-8
D-11
D-18
D-9
D-9
D-3
D-4
D-5
D-9
D-9
D-11
D-6
D-6
D-17
D-17
D-17
D-19
D-17
D-11
D-17
D-17
D-17
D-16
D-17
D-17
D-17
D-17
D-16
D-17
D-16
D-8
D-8
D-11
13
21
13
9
11
8
14
8
12
2
8
14
14
21
21
4
4
28
28
11
12
9
15
22
13
12
15
11
11
9
9
10
30
30
10
4
2
11
15
23
3
8
9
7
2
3
8
5
16
12
17
10
13
9
8
9
2
TM 11-5895-878-14&P-1
SECTION IV NATIONAL STOCK NUMBER AND PART NUMBER INDEX (CONTINUED)
PART
NUMBER
SMS
S-4682-1
TRC-75-2
TW6-200
TYPE J
TYPE J
T154-2C-24VDC
U-32
U-32
VM15-FPB
WMT-334B
W171D1P7
05P33
117-210-101
125220
125220
138187E
138187G
146-103
1N1183
1N2130A
1N277
1N4004
20M
20T
2-140Y
22AWG
22AWG
230-10143
230-10158-A01
230-1863
230-843-33-203
230-94618-07
2335
2335
2335
2335
2335
2335
24P-SB
250-7538-14-504
2N3904
2N3906
2N4354
2N2568
2N5172
30040-1
30040-1
30055-5
30055-5
34-1229
39D
3AG
40372
411
4-140
48C-72
FSCM
05487
14949
98853
01121
01121
70309
90211
90211
00348
82389
94696
01304
79405
73734
73734
96182
96182
02660
81483
81483
81349
04713
02002
02002
71785
23172
23172
29587
29587
29587
29587
29587
83330
83330
83330
83330
83330
83330
04655
72619
04713
04713
81349
04713
03508
70309
70309
70309
70309
29587
56289
75915
59303
75382
71785
58854
FIG.
NO.
D-16
D-16
D-5
D-19
D-16
D-17
D-10
D)-9
D-9
D-16
D-16
D-19
D-17
D-8
D-10
D-10
D-8
D-8
D-11
D-9
D-9
D-19
D-16
D-6
D-6
D-16
D-10 5
D-10
D-15
D-15
D-7
D-15
D-15
D-1
D-2
D-3
D-4
D-7
D-18
D-9
D-7
D-19
D-19
D-17
D-17
D-17
D-10
D-10
D-10
D-10
D-15
D-16
D-17
D-17
D-18
D-11
D-3
ITEM
NO.
17
14
9
2
7
4
3
17
17
13
6
8
25
19
4
4
15
16
6
19
19
6
11
3
1
2
90A
5
2
3
23
6
4
9
10
12
7
14
13
8
7
5
4
10
22
6
2
2
6
6
5
3
24
21
6
8
10
PART
NUMBER
48C-T2
48P-SB
50-251-301-JXJX
50-251-321-PZPZ
5-104-Y
51-0901-0131-301
513936
513938
524
57-10640-11
5A4
6-164
6-164
6912
6S6-50VDC
7501K13
8502
8503
8503
8507
8883
902098-64
903
90A
90A
90A
64959
90A
90EA2C2F3J4(RA)
L4-N1
9418
9418
95-1059-3171-102
95-1059-3171-102
D-54
FSCM
FIG
NO.
ITEM
NO.
64959
D-4
D-9
D-13
D-13
D-18
D-11
D-8
D-8
D-12
D-15
D-8
D-9
D-9
D-16
D-11
D-16
D-18
D-9
D-9
D-11
D-18
D-11
D-11
D-1
D-2
D-3
D-4
D-7
18
8
3
2
7
3
4
3
2
1
7
15
15
18
14
12
12
20
20
15
14
5
7
5
5
3
5
3
96182
73734
73734
72619
72619
D-8
D-9
D-9
D-9
D-9
17
3
3
9
9
58854
04655
29834
29834
27361
72619
44038
44038
16902
29587
81483
71785
71785
71744
27191
70903
83330
83330
70903
83330
93929
82389
64959
64959
64959
TM 11-5895-878-14&P
INDEX
Paragraph
Ac power system ................................ ................................ ................................ ................................ ...2-18
Administrative storage ................................ ................................ ................................ ............................ 1-4
Alarm equipment, functional description:
Audible alarm panel ................................ ................................ ................................ ......................... 5-5
CAU/CCU alarm panel ................................ ................................ ................................ ..................... 5-4
Major/minor alarm panel ................................ ................................ ................................ .................. 5-2
Universal alarm panel ................................ ................................ ................................ ...................... 5-3
Alarm system ................................ ................................ ................................ ................................ ........2-20
Building and changing circuits:
Patch and test responsibilities ................................ ................................ ................................ .........4-11
Procedure ................................ ................................ ................................ ................................ .......4-12
Telecommunications service orders ................................ ................................ ................................ 4-10
Circuit activation ................................ ................................ ................................ ................................ ....3-16
Circuit deactivation ................................ ................................ ................................ ............................... 3-17
Circuit rerouting ................................ ................................ ................................ ................................ .....3-18
Cleaning . ................................ ................................ ................................ ................................ ............. 4-8
Communications services requirements:
Circuit activation ................................ ................................ ................................ ............................. 3-16
Circuit deactivation ................................ ................................ ................................ .........................3-17
Circuit rerouting ................................ ................................ ................................ ............................. .3-18
Origination of requirements ................................ ................................ ................................ .............3-15
Dc power systems ................................ ................................ ................................ ................................ .2-19
Description:
Equipment row 1 ................................ ................................ ................................ ............................. 1-10
Equipment row 2 ................................ ................................ ................................ .............................. 1-11
Facility components ................................ ................................ ................................ .......................... 1-8
List of TCF components ................................ ................................ ................................ ..................1-13
P&T description ................................ ................................ ................................ ............................... 1-9
QA test center ................................ ................................ ................................ ................................ .1-12
Tabulated data ................................ ................................ ................................ ................................ . 1-7
Destruction ................................ ................................ ................................ ................................ ............. 1-5
Digital circuits:
Black circuits, typical ................................ ................................ ................................ ........................ 2-7
General ................................ ................................ ................................ ................................ ............ 2-6
Red circuits, typical ................................ ................................ ................................ .......................... 2-8
Forms and records ................................ ................................ ................................ ................................ .. 1-3
Grounding system ................................ ................................ ................................ ................................ ..2-21
Indexes of publications................................ ................................ ................................ ............................ 1-2
Interbay trunking systems ................................ ................................ ................................ ......................2-17
Intermediate distribution frames ................................ ................................ ................................ ............. 2-3
Maintenance:
Checks and service periods ................................ ................................ ................................ ............. 4-4
Cleaning ................................ ................................ ................................ ................................ .......... 4-8
Painting ................................ ................................ ................................ ................................ ........... 4-9
Preventive:
Daily, weekly ................................ ................................ ................................ ......................... 4-5
Monthly ................................ ................................ ................................ ................................ . 4-6
Quarterly ................................ ................................ ................................ ............................... 4-7
Scope ................................ ................................ ................................ ................................ .............. 4-1
Tools, materials, and test equipment ................................ ................................ ................................ 4-2
Operation practices and methods:
Controller duties ................................ ................................ ................................ ............................... 3-4
Station management:
Approach ................................ ................................ ................................ .............................. 3-2
Facilities and usage ................................ ................................ ................................ .............. 3-3
System management ................................ ................................ ................................ ....................... 3-1
Orderwire procedures ................................ ................................ ................................ ............................ 3-14
Patching operations:
Precautions ................................ ................................ ................................ ................................ ...... 3-6
Purpose ................................ ................................ ................................ ................................ ........... 3-5
Index-1
Page
2-57
1-1
5-2
5-1
5-1
5-1
2-60
4-4
4-5
4-3
3-13
3-13
3-14
4-3
3-13
3-13
3-14
3-13
2-58
1-3
1-3
1-3
1-19
1-3
1-19
1-1
1-1
2-19
2-19
2-19
1-1
2-61
1-1
2-53
2-1
4-1
4-3
4-3
4-1
4-2
4-2
4-1
3-1
3-1
3-1
3-1
3-13
3-3
3-2
TM 11-5895-878-14&P
Paragraph
Reporting ................................ ................................ ................................ ................................ ......... 3-7
Vf and digital................................ ................................ ................................ ................................ ..... 3-8
Power systems:
Ac
................................ ................................ ................................ ................................ .............2-18
Dc
................................ ................................ ................................ ................................ .............2-19
Purpose and use ................................ ................................ ................................ ................................ ..... 1-6
Quality control tests:
Introduction ................................ ................................ ................................ ................................ .....3-19
Testing procedures ................................ ................................ ................................ .......................... 3-20
Scope of manual ................................ ................................ ................................ ................................ ... .1-1
Station application:
Intermediate distribution frames ................................ ................................ ................................ ....... 2-3
Introduction ................................ ................................ ................................ ................................ ...... 2-1
Patch and test facility ................................ ................................ ................................ ...................... .2-2
Station clock isolation ................................ ................................ ................................ ............................. 2-9
Telecommunications service orders ................................ ................................ ................................ ......4-10
Test equipment:
Description ................................ ................................ ................................ ................................ ......2-16
Scope ................................ ................................ ................................ ................................ ...........2-15a
Touchup painting instructions ................................ ................................ ................................ ................. 4-9
Troubleshooting alarm circuits:
Audible alarm panel ................................ ................................ ................................ ........................4-17
CAU/CCU alarm panel ................................ ................................ ................................ ....................4-16
Major/minor alarm panel ................................ ................................ ................................ .................4-14
Universal alarm panel ................................ ................................ ................................ .....................4-15
Troubleshooting, general information
Fault isolation:
Dc circuit ................................ ................................ ................................ ................................ ....
Voice channel ................................ ................................ ................................ ................................ .3-12
Orderwire procedures ................................ ................................ ................................ ......................3-14
Practices ................................ ................................ ................................ ................................ .........3-10
Responsibilities ................................ ................................ ................................ ............................... .3-9
Universal digital patch panel:
Circuit function ................................ ................................ ................................ .............................. 2-10b
Description ................................ ................................ ................................ ................................ ....2-10a
Programs:
Black receive circuit ................................ ................................ ................................ ............2-11f
Black/red receive circuit ................................ ................................ ................................ .... .2-11r
Black send circuit ................................ ................................ ................................ ...............2-11e
Black send circuit (modified less clock) ................................ ................................ ..............2-11q
General ................................ ................................ ................................ .............................. 2-11a
High level receive circuit ................................ ................................ ................................ ....2-11h
High level send circuit ................................ ................................ ................................ ........2-11g
Low level balanced receive circuit ................................ ................................ ...................... 2-11p
Low level balanced send circuit ................................ ................................ ......................... .2-11o
Low level send circuit (external timing) ................................ ................................ ............. . 2-11i
Low level send circuit (receiver to sender timing) ................................ ................................ 2-11j
Low level send circuit (sender to receiver timing) ................................ ............................... 2-11k
Low level receive circuit (sender to receiver timing) ................................ ........................... .2-11l
Low level +6VDC receiver circuit ................................ ................................ ...................... .2-11n
Low level +6VDC send circuit ................................ ................................ .......................... .2-11m
Red control circuit ................................ ................................ ................................ ..............2-11d
Red send circuit ................................ ................................ ................................ ................. 2-11c
Red receive circuit ................................ ................................ ................................ ............2-11 b
Vf circuit connections ................................ ................................ ................................ ............................. 2-4
Vf patch panel ................................ ................................ ................................ ................................ ....... .2-5
Wideband circuits
General ................................ ................................ ................................ ................................ ...........2-12
Patch panel ................................ ................................ ................................ ................................ .....2-14
Typical circuit ................................ ................................ ................................ ................................ ..2-13
Index-2
Page
3-3
3-3
2-57
2-58
1-1
3-14
3-15
1-1
2-1
2-1
2-1
2-20
4-3
2-48
2-48
4-3
4-12
4-9
4-5
4-7
3-13
3-10
3-13
3-8
3-8
2-23
2-20
2-28
2-44
2-28
2-44
2-23
2-32
2-28
2-40
2-40
2-32
2-32
2-35
2-36
2-40
2-36
2-24
2-24
2-23
2-16
2-16
2-47
2-47
2-47
TM 11-5895-878-14&P
Figure FO-1. Patch and Test Section of the Technical Control Facility, Floor Plan.
TM 11-5895-878-14&P
Figure FO-2(1). PTC Circuit Routing Diagram (part 1 of 2).
TM 11-5895-878-14&P
Figure FO-2(2). PTC Circuit Routing Diagram (part 2 of 2).
TM 11-5895-878-14&P
Figure FO-3. Typical Voice Frequency Circuit Diagram.
TM 11-5895-878-14&P
Figure FO-4. Voice Frequency Patch Panel, Schematic Diagram.
TM 11-5895-878-14&P
Figure FO-5. Typical Black Digital Circuit IDF Connection Diagram.
TM 11-5895-878-14&P
Figure FO-6. Typical Red Digital Circuit Diagram.
TM 11-5895-878-14&P
Figure FO-7. Universal Digital Patch Panel, Schematic Diagram.
TM 11-5895-878-14&P
Figure FO-8. Typical Wide Band Circuit Diagram.
TM 11-5895-878-14&P
Figure FO-9. PTC Grounding System Diagram.
U.S. GOVERNMENT PRINTING OFFICE: 1979-665034/1162
By Order of the Secretary of the Army:
Official:
J.C. PENNINGTON
Major General, United States Army
The Adjutant General
Distribution:
To be distributed in accordance with list furnished USAAGPC.
BERNARD W. ROGERS
General, United States Army
Chief of Staff
The Metric System and Equivalents
Linear Measure
Liquid Measure
1 centiliter = 10 milliters = .34 fl. ounce
1 deciliter = 10 centiliters = 3.38 fl. ounces
1 liter = 10 deciliters = 33.81 fl. ounces
1 dekaliter = 10 liters = 2.64 gallons
1 hectoliter = 10 dekaliters = 26.42 gallons
1 kiloliter = 10 hectoliters = 264.18 gallons
1 centimeter = 10 millimeters = .39 inch
1 decimeter = 10 centimeters = 3.94 inches
1 meter = 10 decimeters = 39.37 inches
1 dekameter = 10 meters = 32.8 feet
1 hectometer = 10 dekameters = 328.08 feet
1 kilometer = 10 hectometers = 3,280.8 feet
Square Measure
Weights
1 sq. centimeter = 100 sq. millimeters = .155 sq. inch
1 sq. decimeter = 100 sq. centimeters = 15.5 sq. inches
1 sq. meter (centare) = 100 sq. decimeters = 10.76 sq. feet
1 sq. dekameter (are) = 100 sq. meters = 1,076.4 sq. feet
1 sq. hectometer (hectare) = 100 sq. dekameters = 2.47 acres
1 sq. kilometer = 100 sq. hectometers = .386 sq. mile
1 centigram = 10 milligrams = .15 grain
1 decigram = 10 centigrams = 1.54 grains
1 gram = 10 decigram = .035 ounce
1 decagram = 10 grams = .35 ounce
1 hectogram = 10 decagrams = 3.52 ounces
1 kilogram = 10 hectograms = 2.2 pounds
1 quintal = 100 kilograms = 220.46 pounds
1 metric ton = 10 quintals = 1.1 short tons
Cubic Measure
1 cu. centimeter = 1000 cu. millimeters = .06 cu. inch
1 cu. decimeter = 1000 cu. centimeters = 61.02 cu. inches
1 cu. meter = 1000 cu. decimeters = 35.31 cu. feet
Approximate Conversion Factors
To change
To
inches
feet
yards
miles
square inches
square feet
square yards
square miles
acres
cubic feet
cubic yards
fluid ounces
pints
quarts
gallons
ounces
pounds
short tons
pound-feet
pound-inches
centimeters
meters
meters
kilometers
square centimeters
square meters
square meters
square kilometers
square hectometers
cubic meters
cubic meters
milliliters
liters
liters
liters
grams
kilograms
metric tons
Newton-meters
Newton-meters
Multiply by
To change
2.540
.305
.914
1.609
6.451
.093
.836
2.590
.405
.028
.765
29,573
.473
.946
3.785
28.349
.454
.907
1.356
.11296
ounce-inches
centimeters
meters
meters
kilometers
square centimeters
square meters
square meters
square kilometers
square hectometers
cubic meters
cubic meters
milliliters
liters
liters
liters
grams
kilograms
metric tons
To
Newton-meters
inches
feet
yards
miles
square inches
square feet
square yards
square miles
acres
cubic feet
cubic yards
fluid ounces
pints
quarts
gallons
ounces
pounds
short tons
Temperature (Exact)
°F
Fahrenheit
temperature
5/9 (after
subtracting 32)
Celsius
temperature
°C
Multiply by
.007062
.394
3.280
1.094
.621
.155
10.764
1.196
.386
2.471
35.315
1.308
.034
2.113
1.057
.264
.035
2.205
1.102
PIN: 040634-000
This fine document...
Was brought to you by me:
Liberated Manuals -- free army and government manuals
Why do I do it? I am tired of sleazy CD-ROM sellers, who take publicly
available information, slap “watermarks” and other junk on it, and sell it.
Those masters of search engine manipulation make sure that their sites that
sell free information, come up first in search engines. They did not create it...
They did not even scan it... Why should they get your money? Why are not
letting you give those free manuals to your friends?
I am setting this document FREE. This document was made by the US
Government and is NOT protected by Copyright. Feel free to share,
republish, sell and so on.
I am not asking you for donations, fees or handouts. If you can, please
provide a link to liberatedmanuals.com, so that free manuals come up first in
search engines:
<A HREF=http://www.liberatedmanuals.com/>Free Military and Government Manuals</A>
– Sincerely
Igor Chudov
http://igor.chudov.com/
– Chicago Machinery Movers
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertisement