Orolia 8140 Instruction Manual

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Orolia 8140 Instruction Manual | Manualzz
SPECTRACOM
FREQUENCY DISTRIBUTION AMPLIFIER
MODEL 8140
INSTRUCTION MANUAL
SPECTRACOM CORPORATION
95 METHODIST HILL DRIVE
ROCHESTER, NY 14623
PHONE 585.321.5800
FAX 585.321.5219
WwW.spectracomcorp.com
Part Number MAN8140
Manual Revision 2.1
May 1994
~ Copyright © 2005 Spectracom Corporation. The contents of this publication may not be
reproduced in any form without the written permission of Spectracom Corporation. Printed in
USA.
Specifications subject to change or improvement without notice.
Speciracom, NelClock, Ageless, TimeGuard, TimeBurst, Timelap, lineTap, MultiTap,
Versalap, and legally Traceable Time are Spectracom registered trademarks. All other
products are identified by trademarks of their respective companies or organizations. All rights
reserved. |
5) SPECTRACOM
PUBLIC SAFETY | SECURITY | GOVERNMENT -
LIMITED WARRANTY
Spectracom warrants each new product manufactured and sold by
it to be free from defects in material, workmanship, and
construction, except for batteries, fuses, or other material normally
consumed in operation that may be contained therein, for five
years after shipment to the original purchaser [which period is
referred to as the "warranty period"). This warranty shall not
apply if the product is used contrary to the instructions in its
manual or is otherwise subjected to misuse, abnormal operations,
accident, lightning or transient surge, repairs or modifications not
performed by Spectracom.
The GPS receiver is warranted for one year from date of shipment
and subject to the exceptions listed above. The power adaptor, if
supplied, is warranted for one year from date of shipment and
subject to the exceptions listed above.
The Rubidium oscillator, if supplied, is warranted for two years
from date of shipment and subject to the exceptions listed above.
All other items and pieces of equipment not specified above,
including the antenna unit, antenna surge suppressor and antenna
pre-amplifier are warranted for 5 years, subject to the exceptions
listed above. |
WARRANTY CLAIMS
Spectracom's obligation under this warranty is limited to in-factory
service and repair, at Spectracom's option, of the product or the
component thereof, which is found to be defective. If in
Spectracom's judgment the defective condition in a Spectracom
product is for a cause listed above for which Spectracom is not
responsible, Spectracom will make the repairs or replacement of
components and charge its then current price, which buyer agrees
to pay.
| Spectracom shall not have any warranty obligations if the
procedure for warranty claims is not followed. Users must notify
Spectracom of the claim with full information as to the daimed
defect. Spectracom products shall not be returned unless a return
authorization number is issued by Spectracom. Spectracom
products must be returned with the description of the claimed
defect and identification of the individual to be contacted if
additional information is needed. Spectracom products must be
returned properly packed with transportation charges prepaid.
5-Year Warranty
EXCEPT FOR THE LIMITED WARRANTY STATED ABOVE,
SPECTRACOM DISCLAIMS ALL WARRANTIES OF ANY KIND
WITH REGARD TO SPECTRACOM PRODUCTS OR OTHER
MATERIALS PROVIDED BY SPECTRACOM, INCLUDING
WITHOUT LIMITATION ANY IMPLIED WARRANTY OR
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
Spectracom shall have no liability or responsibility to the original
customer or any other party with respect to any liability, loss, or
damage caused directly or indirectly by an Spectracom product,
material, or software sold or provided by Spectracom,
replacement parts or units, or services provided, including but not
limited to any interruption of service, excess charges resulting from
malfunctions of hardware or software, loss of business or
anticipatory profits resulting from the use or operation of the
Spectracom product or software, whatsoever or howsoever
caused. In no event shall Spectracom be liable for any direct,
indirect, special or consequential damages whether the claims are
grounded in contract, tort (including negligence), or strict liability.
EXTENDED WARRANTY COVERAGE
Extended warranties can be purchased for additional periods
beyond the standard five-year warranty. Contact Spectracom no
later than the last year of the standard five-year warranty for
extended coverage. |
SPECTRACOM
95 Methodist Hill Drive
Suite 500 Rochester, NY 14623
-+1.585.321.5800 FAX: +1.585.321.5218 www.spectracomcorp.com [email protected]
WARRANTY REGISTRATION
Spectracom Corporation
101 Despatch Drive
East Rochester, New York 14445
716 381-4827, fax 716-381-4998
www.spectracomcorp.com, [email protected]
Dear Customer,
Spectracom occasionally contacts customers regarding our products. We must
know to whom we should send manual updates, change notices, and new product
information. Because people sometimes change job assignments, we request
. department, mail station, and title information to ensure that correspondence in
future years will reach either the user of our products or his/her supervisor. in
— filling out the registration, please use the title or mail station or department of the
supervisor most interested in keeping the equipment and its documentation
up-to-date. Thank you.
Name | Title
Department Mail Stop
Company Model Number
Address _ Serial No.
City Date Installed
State Zip
Telephone | Ext.
E-mail Website:
Comments:
SAFETY NOTES
This manual contains three types of advisory messages:
[WARNING |
‘WARNING paragraphs contain information essential for avoiding the possibility of
| personal harm to the operator or other persons. |
[CAUTION]
CAUTION paragraphs contain information essential for avoiding the possibility of harm
to the equipment. | | |
МОТЕ
NOTE paragraphs contain information which facilitates use or operation of the equipment.
Read the information carefully to avoid incorrect or sub-optimal results. |
The safety notice
WARNING |]
Dangerous Voltage
“ Will be shown in alignment or repair procedures whenever the operator or technician risks
coming into contact with voltages in excess of 28 Volts. o
Note that the commercial power lines represent a lethal source of high current. For this
reason, disconnect equipment from the ac power whenever you intend to work on sections
of this equipment containing exposed 115/230 V ac wiring. |
If the equipment is equipped with a grounded power connector, connect it only to a
properly grounded electric outlet. Do not use ungrounded plug adaptors, since under
certain conditions, electric shock orequipment damage can result. |
NOTE:
No operator-serviceable parts inside. Refer servicing to qualified technicians only.
Table of
Contents
Warranty .........eeeoncccoccenerocceo i
Warranty Registration .............. ii
Safety ¡Notes ..............eecooo e... i
Introduction ...... occocorecoooorcanane Section
Unpacking and Initial Setup ........ Section
Initial Check Procedure 200005000000 Section
System Interconnection ............ . Section
Operation оо оо оо оо ооо ооо о овововововоое Section
Principles of Operation 0.........> Section
Diagnostics ........ 00.0.0000 . e. ..... Section
; Diagrams .00000000000000000000000004008 Section
Parts ............. ....... vesssseuces » Section
© © “TO ^^ N Y to ead
Section 1
Introduction
0.0.0... освоено
Equipment Not Supplied But Required ........
Available — Options Cees ........ ...........>.
Specifications
.000000000000000000080080000000508080
1.2
1.3
1.3
1.3
1.4
Page 1.2
OVERVIEW
The Model 8140 Frequency Distribution Amplifier receives a standard input
frequency and conditions it for distribution to remote points via a coaxial cable distribution
‘network and interface units. The Model 8140 thus provides a precision frequency
reference to up to 25 remote locations, eliminating the need for an expensive precision time-
base or reference in the remotely located equipment.
10+, 5+, 1, or 0.1-MHz signals, selectable by pushbuttons on the front panel, are available
- from the “STANDARD OUTPUT” BNC connector on the front panel. .Up to four
networks can be connected to BNC connectors on the rear panel, with up to 25 line tap
loads distributed among them. The networks are driven by a 10-MHz signal unaffected by
the front-panel pushbuttons. DOES |
Each remote station is fed by a model 8140 T or 8140 TTL Line Tap interface unit. The
~ Line Tap receives both the distributed RF signal and dc power from the coaxial distribution
cable. The RF signal is buffered, divided down to the frequency required by the equipment - -
to be driven, filtered, and made available at the BNC output connector. The --TTL version
is specially designed to drive TTL loads. |
The Line Tap modules are ordered specifically for the desired output frequency, which may
be 10, 5.0, 1.0, 0.5, or 0.1 MHz. =
If special frequencies, such as 1.544 or 2.048 MHz are required by the customer, the
Model 8140 VT VersaTap™ may be used. Contact Customer Service or your Spectracom
Sales Representative to discuss these requirements.
The standard-configuration Model 8140 requires an input frequency of 10.0 MHz, but one
of three options may be installed to permit other input frequencies as shown in the table
below: | | | | |
Option Description
07 5-MHz standard input frequency
08 | 1-MHz standard input frequency
12 | 100-KHz standard input frequency
These options must be installed at the factory. If you wish to have an existing Model 8140
modified, please contact Customer Service.
Page 1.3
EQUIPMENT SUPPLIED-
Standard Model .
* Model 8140 Frequency Distribution Amplifier
Instruction Manual « BNC Connector
+ Power Cord a. * 3/4 Ampere Fuse
* Four 50-Q line terminators
“ Model with Option 01, Rack Mount Kit
° Rack-mount panel extensions.
EQUIPMENT NOT SUPPLIED BUT REQUIRED:
~~» Aprecision frequency source." The following SPECTRACOM units may
be used:
$ Model 8161 Standard Frequency Receiver Oscillator ...
§ Model 8164 NBS Receiver - Disciplined Oscillator
| § Model 8130 Frequency Standard Oscillator.
* Model 8140 T, 8140 TTL, or 8140 VT line tap modules, as required by
your system desi gn.
* “Sufficient RG58 coaxial cable for the distribution network.
* Cable and connectors to connect the Model 8140 to the precision frequency
source.
AVAILABLE OPTIONS:
Option Description
01* | Rack Mount Kit
07 | 5-MHz standard input frequency |
08 | 1-MHz standard i input frequency
12 | 100-KHz standard input frequency
20 Audible alarm |
* Can be installed in the field by the customer.
| — Page 1.4
| ~ SPECIFICATIONS.
MODEL 8140 INPUTS & OUTPUTS
Front Panel Output: 0.1, 1.0, 5.0, or 10 MHz, selectable from the front panel. TTL -
compatible (fanout: 2 maximum) 3.4-V rectangular positive pulses. Drives 93-Q or greater
Rear Panel Outputs: Four BNC connectors, all providing a 10-MHz sine-wave signal
to terminated and dc-isolated cable via separate buffer amplifiers. Level is 0.5 V rms, 50
©, with superimposed +12 V de to power the Line Tap modules. ох |
Rear Panel Input: BNC connector, 50°'Q. Signal level 0:25 to 3.0 V rms. Frequency
normally 10 MHz, with alternate 5.0, 1.0, or | .1 MHZ furnished as Options 07, 08, or 12.
Fault Indication: Output Fault Lamp gives automatic indication of loss of signal at any
output connector. Audible Alarm is available as Option 20. |
LINE TAPS | |
Input: Buffered high impedance causes negligible mismatch on main trunk line
distribution cable. Accepts signal levels provided by the base station (Model 8140) rear- -
panel outputs. | |
Output Level: Standard unit (Model 8140T) provides 600 mV rms sine wave into 50 Q.
‘When used without termination, output is TTL compatible. Optional unit (Model
8140TTL) provides TTL 3.4 V rectangular positive pulses from а 50-52 source. |
- Output Frequencies: 10, 5.0, 1.0, 0.5, or 0.1 MHz. Specify frequency for each Line
Tap ordered. |
Harmonic Distortion of Output: -40 dB for standard unit with sine-wave output.
Crosstalk (Isolation): 80 dB minimum.
| Output Phase Noise: Typically less than —130 dB/Hz 1 KHz from carrier for 10 MHz
input to base station amplifier.
Line Tap Size (L x W x H): 5.25 x 2.63 x 1.71 inches (133 x 67 x 43 mm).
Mounting hole pattern: 4.75 x 1.75 inches (121 x 44 mm). |
VERSATAP=
Description: The VersaTap™ is a single-frequency synthesizer, the output of which is
factory-set to any frequency between 1 KHz and 16 MHz in 1-KHz increments, or between
16 and 20 MHz in 2-KHz increments. Special frequencies can be furnished, such as the
3.5795454.. MHz. TV color subcarrier. Exact frequencies must be specified at timé of
order. | |
Page 1.5
Input: Buffered high-impedance input. Accepts 10.0 MHz with signal level between 100
millivolts and 5.5 volts peak-to-peak on a dc voltage of 7 to 12 Vdc. the dc current
requirement is 110 milliamps at +12 Vdc. |
Output A: A sine wave of 1.7 volts peak-to-peak at the specified frequency into a 50-Q
load for frequencies greater than 100 KHz. A TTL output for frequencies below 100 KHz
with a source impedance of 50 €2 (SN745140 driver). . is |
Output. B:. A-TTL output at the-specified frequency with -a-seurce impedance of 50 Q
(SN745140 driver). If the internal jumper W6 is moved to location W5, output B is high
when the VersaTap is phase locked to the incoming reference and low when it is unlocked.
Lock LED: The LED will light when the VersaTap is locked to the incoming reference.
~~ If the dc input is low, which may cause the VersaTap to malfunction, the LED will blink.
The LED will be unlit when the VersaTap is not locked to the incoming reference.
Dimensions (L x W x H): 8.3 x 4.2 x-1.7 inches (211 x 107 x 43 mm). Mounting
hole pattern: 8.88 x 2.75 inches (225.4 x 69.9 mm). a
TRUNK LINE LOADING LIMITATIONS
Number of Remote Stations: 25 Line Tap loads maximum, total on all 4 outputs. One
‘VersaTap™ = 3 Line Tap Loads. N |
Distance to Remote Stations: Up to 25 Line Taps on one output at an average
distance of 750 feet (228 m). 1500 feet (457 m) maximum using RG-58 cable. Model
8140TA Distribution Line Amplifier (“Line Extender”) extends this distance to up to 3000
feet (915 m), with fewer Line Taps allowed. Use of RG-8 cable extends the distance to
3000 feet (915 m) with all 25 Line Tap loads allowed. |
ENVIRONMENTAL SPECIFICATIONS
Ambient Air Temperature: 0 — 50°C.
Unpacking
Equipment Placement and Mounting
Equipment
Unpacking and
Initial Setup
059700
Setup —.........eecoccccocorecccanos
Page 2.2 |
Unpacking
Do the following steps to unpack the Model 8140 Frequency Distribution Amplifier:
[1] Upon receipt, open the shippin g carton and carefully remove all contents.
[ 2] Check each item against the packing list.
NOTE
If any items are missing, immediately notify the Customer Service department.
[ 31 Check that there is no apparent damage to any item.
NOTE
Each item has been carefully checked and packed before shipment. If the
external packing appears damaged by rough handling, note this fact on the
carrier’s shipping receipt. If any item appears damaged, notify the shipping
carrier immediately and file a claim. Be certain to save all packing materials, as
they may be required for inspection by the carrier.
If any item must be returned to Spectracom, contact Customer Service for a |
return authorization number first.
Equipment Placement and ‘Mounting
The Model 8140 Frequency Distribution Amplifier may be installed in a standard
19-inch equipment rack if Option 01, Rack Mount Kit, is installed.
5-1/4 inches of vertical rack space is required. Depth required is 13.5 inches
(34.3 cm), plus 2 — 3 inches (5.1 — 7.6 cm) rear clearance for cables.
Otherwise, the Model 8140 may be placed on a bench or shelf. Depth required is
13.5 inches (34.3 cm), plus 2 — 3 inches (5.1 — 7.6 em) rear clearance for -
cables. Width: 8.5 inches (21.6 cm). Height: 5.25 inches (13.33 cm).
Allow at least 1 inch (2.54 cm) clearance on the top surface to provide adequate |
ventilation. ‘ |
Unless Option 20, Audible Alarm, has been installed, the Model 8140 should be
mounted so that the operator can see the “OUTPUT FAULT” lamp on the front
panel.
Page 2.3 |
Equipment Setup
[CAUTION |
Do the following steps before connecting the Model 8140 to the ac power:
[1] Movethe<115VAC/230-VAC” switch on the rear panel to the correct position
for the line voltage to be used. — |
[2] Check that the correct value of fuse, corresponding to the line voltage selected,
is installed. | |
NOTE
See the label on the rear panel for the correct fuse to be used.
115 VAC
230 VAC
— switch
The standard input frequency for the Model 8140 is 10 MHz. Other input frequencies
may be used if the correct option is installed. See the table below for the allowable
frequencies and the required option for each: TIRA
Option} Description
07 5-MHz standard input frequency
.08 | 1-MHz standard input frequency
12 | 100-KHz standard input frequency
These options must be installed at the factory. Contact Customer Service if you wish to
have your Model 8140 modified to use one of these alternative standard input
frequencies.
Page 2.4
Model 8140
Rear Panel
H 115 VAC
230 VAC
Buffered Output
~ Connectors
J3
[ 3] Bring the coaxial cables of the distribution network(s) to the buffered output
connectors, but do not connect them yet. See the “Interconnections” section for |
help in designing the distribution networks. |
[ 4] Connect the power cord to J3.
[ 5] Connect the other end of the power cord to a grounded ac outlet supplying the
line voltage selected in step 4. |
| [ 6] Do the “Initial Checkout” procedure.
Initial Check
Procedure
Page 3.2 —
INITIAL CHECK PROCEDURE
Do the following steps to perform the initial check of the Model 8140 Frequency
Distribution Amplifier:
Model 8140
Front Panel
: “POWER”
Lamp
OFF/ON FREQUENCY — MHZ
10 50 1
“OUTPUT F AULT” 4 re =, 3 RS = я % 23 es =
or EE
_ SPECTRACOM
Real FREQUENCY DISTRIBUTION AMPLIFIER
ushbutton |
MODEL 8140
[ 1] Press the red “OFF/ON” pushbutton in.
[ 2] Check that:
* the “POWER” lamp illuminates
* the “OUTPUT FAULT” lamp illuminates
« the audible alarm operates (if option 20 is installed).
— Page 33
Model 8140
| Rear Panel
OSC INPUT
| “OSC INPUT”
Connector
Fuse | |
| A 115 VAC
230 VAC
[ 3] Connect the standard input frequency source to the “OSC INPUT”
connector on the rear panel.
[4] Check that:
e the “OUTPUT FAULT” lamp extinguishes
« the audible alarm is silenced (if option 20 is installed).
Model 8140 _
~ Front Panel
© POWER OUTPUTFAULT STANDARD OUTPUT @
© ©
“STANDARD OUTPUT"
OFF/ON FREQUENCY — -MHz : —. Connector
0110 50 10 To
| SPECTRACOM | ii
1 FREQUENCY DISTRIBUTION AMPLIFIER E “FREQUENCY-MHZ”
o | | MODEL 8140 | © Switches
[ 5] Connect an oscilloscope to the “STANDARD OUTPUT” connector -
„on the front panel.
a ‘Page 3.4
[ 6] Press each of the “FREQUENCY — MHZ” switches, one at a time,
and check that: | u a
* a TTL square-wave signal is present
* the frequency changes appropriately.
Model 8140
_ € E ) | Rear Panel
115 VAC
230 VAC
Connectors
“A”, “В”, “СС”, and “xD”
[7] Connect the oscilloscope to the “A” connector.
[ 8] Check that a sine-wave signal of 0.5 V rms, superimposed on 12 V
dc, is present.
[ 9] Repeat steps 7 and 8 for connectors “B” — “D”.
[10] Disconnect the oscilloscope. | |
[11] Short the center conductor to ground on the “A”, “B”, “C”, and “D”
connectors, one at a time, and check that:
* the “OUTPUT FAULT” lamp illuminates
~ + the audible alarm operates (if option 20 is installed).
Page 3.5
. [12] Connect the coaxial cables of the distribution network(s) to the
buffered output connectors “A”, “B”, “C”, and “D”. After each
connection, check that the “OUTPUT FAULT” lamp does not light.
NOTE
If the “OUTPUT FAULT” lamp lights after any connection to the buffered output
connectors,.check the cable just connected for-shorts-orimproper-loads. The end
of the cable should be terminated by a dc-isolated 50-Q terminator (P/N
004490). | | | |
— System
| Interconnection
Special Considerations When using the
Model 8140VT VersaTap™......... 0.0.0.0... .. 4.3
‘Determining the Number of Line Tap |
Loads Versus Cable Type and Length ..... seoococo 4.4
Typical Interconnection Diagram ................. .. 4.5
— Page 4.2
SYSTEM INTERCONNECTION
When designing a system to distribute a standard frequency signal to remote
locations, observe the following considerations; + ВЕ |
COMPONENTS
A Frequency Distribution System may use any of the following components:
Model 8140 Frequency Distribution Amplifier, . This is a device
designed to amplify and send a standard signal to a distribution network.
Model 8140 T and Model 8140 TTL Line Taps. “These devices,
powered by dc on the coaxial feedline, are attached to the coaxial distribution
“network and provide an output at one of 3 specified frequencies; 1, 5, or 10 MHz.
The frequencies of 500 and 100 KHz, are available at somewhat higher cost.
The Model 8140 T provides a filtered sine-wave output at 600 mV into a 50-Q
load. This signal can drive a TTL load with a fanout of 2 if the line is
unterminated and short. o в
The Model 8140 TTL is optimized for driving TTL 50-Q loads.
-Each Line Tap bears a label showing its output frequency. Should this label be
lost, the frequency can easily be ‘determined using a frequency counter or
oscilloscope.
Model 8140TA Line Extender Amplifier. The Line Extender Amplifer
must be used to boost the output signal when the coaxial distribution network is
more than 1500 feet (457 m) long. The Line Extender will drive an additional
1500 feet (457 m) of RG58 coaxial cable with Model 8140 Line Taps installed
along its length. So
Two dc-isolated 50-€2 terminators must be used; one at the input tee connector of
the Line Extender Amplifier and one at the far end of the cable connected to the
output of the Line Extender Amplifer. -
See the “Typical Interconnection Diagram” at the end of this section for an
approved method of interconnection. Co
AN,
CA '
"LA, pe
nN + `
e
— Page 4.3
D {_OF DISTRIB ETWORK
Four buffered outputs, labeled “A”. “B”, “C”, and “D”, are provided on the rear
panel of the base station so that trunk lines may be run in each of four directions
from the base station. This minimizes the total length of coaxial cable in th
system. In planning the system installation, follow these basic rules: © ©
1. No more than 25 Line Taps may be driven from one base station
under any circumstances, or the power supply capacity will be
exceeded.
2. Using RG-58 cable, 1500 feet (457 m) is the longest trunk line
that may be used. If longer runs are required, you may:
A. locate the Model 8140 in the geographical center of the —
installation, running distribution lines in both directions
and achieving a coverage of 3000 linear feet (914 m);
В. use a Model 8140TA Line Extender Amplifier at 1500 feet,
allowing a further 1500-foot (457-m) extension of the
distribution line. The Model 8140TA counts as one Line
‘Tap towards the total number allowed.
Use a Distribution Line Termination, part number 004490,
at the input tee connector and at the end of the extended line
section, as-shown in the “Typical Interconnection
- Diagram”.
3. Each distribution line must be terminated with a Distribution Line
Termination. Four of these are included in the Ancillary Kit
furnished with the equipment. |
4. If 25 Line Taps are used, their average distance from the amplifier
is limited to 750 feet (228 m), using RG-58. Up to 12 Line Tap
may be placed at 1500 feet (457 m) on any one trunk line. |
We recommend that, wherever practical, the Line Taps be permanently mounted
to a lab bench or wall nearby. This avoids their loss or misplacement and *
discourages people from occasionally disconnecting them, thus cutting off the
signal to stations further down the line. | | |
SPECIAL CONSIDERATIONS WHEN USING THE
MODEL 8140VT VersaTap™
The Model 8140VT VersaTap™ is used in lieu of a standard Line Tap when a
special frequency output, such as 1.544 or 2.048 MHz, is required by the remote
station equipment. a
See the VersaTap Instruction Manual for details of installation and operation.
Each VersaTap consumes the dc power of 3 Line Taps; the total number of Line
Taps allowed is correspondingly reduced. |
| Page 4.4 |
DETERMINING THE NUMBER OF LINE TAP
LOADS VERSUS CABLE TYPE AND LENGTH
See the graph below to approximatel
y determine the number of permissible line
taps as a function of cable type used and distribution line distance. |
Line Length vs. No. of —
Line Taps Permitted
| | Y Y Maximum length |
3000 with Model S140TA 78
Sn о Maximum Length |
ВЕ using RG-8 Coax, § Power
о = without Model Supply
SD 8140TA ~~ Limit
2000 a Ш a 7 |
2 Maximum length —— O
= ‘without Model B140TA MH z Japs
= 1000 Langa e MT
== 1- and 5-MHz Taps §
< | mel |
© |
©
0 5 10 15 20 25
Number of Line Taps On 1 Distribution Line
Page 4.5
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Operation |
| Front Panel Controls |
PT ELOTE DCOCCOCOREOCNASO
Rear Panel Controls cesse
“Using the Line Taps oo...
Repairs nnonoconercaonoacioneoo cenenonrene
— Page 5.2
OPERATION
“OFF/ON (Power)
FREQUENCY
-MHZ В
STANDARD
OUTPUT
OUTPUT FAULT
LAMP |
Depressing this button applies ac power to the unit.
The green “POWER” lamp illuminates.
- These four buttons choose one of four frequencies
available at the “STANDARD OUTPUT” connector
on the front panel. The frequencies are 0.1, 1.0, —
3.0, and 10.0 MHz. Each button is labeled with the
frequency it provides. The buttons do not affect
the frequencies available at connectors “А”, “В”,
“С”, ог “О” on the rear panel, nor the output
frequencies of any line taps.
This BNC connector provides an output signal
- derived from the standard input signal applied to
the rear panel “OSC INPUT” connector. The
output is TTL compatible, with maximum fanout of
2, and may also be used to drive a resistive load or
cable of 93 Q or greater. |
This red lamp illuminates when a loss of signal |
occurs at any rear panel output connector, or the
driving signal at the “OSC INPUT” connector is
lost. On units accepting input frequencies other
than 10 MHz (Option 07, 08, or 12 installed), this
lamp will light if the input translator circuit does not
acquire phase lock to the input signal.
REAR PANEL CONTROLS
OSC INPUT
This BNC connector is the input port for the
distribution amplifier. The input impedance is 56
The input frequency must be 10 MHz unless
one of the options below has been installed:
Option
Description
07
5-MHZz standard input frequency
08
1-MHz standard input frequency
12
100-KHz standard input frequency
Page 5.3
CONNECTORS
66 А”, “B”, “С”,
| & cp» | |
These BNC outputs drive the trunk coaxial lines of the
distribution system. All four provide 10 MHz, each from a
separate line driver, and each with 12 V dc across the coaxial
line to power the line taps. The maximum number of line |
taps (25 at 750 feet) may be driven from one of these
outputs, or they may be split up between the four outputs in
any combination. Up to 12 line taps may be driven from any
one single output at 1500 feet from the Model 8140. No
more than 25 line taps total may be driven from one base
station Model 8140. | |
[CAUTION]
The rear panel buffered line outputs “A”, “B”, “C”, and “D” may be used to
drive only SPECTRACOM Line Taps. After the last Line Tap on each trunk
line, a dc-isolated 50-Q load (Part Number 004490) must be connected to
correctly terminate the line.
~The Line Tap will supply 600 mV mms into 50 Q. Although this signal is a filtered sine
wave, it may be used to drive TTL loads if the line is not terminated and is not overly
long. Standard Line Taps are available at any one of four frequencies, as shown in the
table below: | |
Line Tap Output Frequencies
Model Number Output Frequency
8140T10 10 MHz
8140T5 - 50 MHz
8140T1 | 1.0 MHz
8140TRS . 0.5 MHz
8140TR1 о 0.1 MHz
If more than one of these frequencies are needed at a test station, mount the Line Taps for
the desired frequencies next to each other and run the distribution line through each of the
input tee connectors in turn.
Page 5.4
REPAIRS
Should a Line Tap malfunction, contact Customer Service about our repair/exchange
program. The Line Taps are sealed assemblies and are not field-repairable.
Principles of
Operation
Distribution Amplifier, A4 ............... 6.2
Power Supply, Al .....Ñ...e..2.e2ceccees 6.2
Input Translator Board, A3 |
(Options 07, 08, or 12) 6.3
Audible Alarm, A2 (Option 20) ......... 6.3
Model 8140T Line Tap Modules ......... 6.3.
Model 8140VT VersaTap Modules ...... 6.4
-— Page 6.2
PRINCIPLES OF OPERATION
Refer to the assembly drawings and schematic diagrams in the “Diagrams” section
as you read the following description.
Distribution Amplifier A4 ~~
The signal from the external standard frequency source (or from the A3 Input
Translator Board, if option 07, 08, or 12 is installed), is fed to the 10-MHz
standard input of the A4 Output Amplifier Assembly at J1 pin 10, where it is
buffered and amplified by Q1 and Q2. From there, the si gnal goes through gates
U1A and U1B, where it is sent through gates U4C and USA, filtered by L1, L2,
‘and C17; and.delivered directly to the rear panel output BNC-connector. —
The drive levels from the rear panel outputs are sinusoidal at 3.0 volts peak-to-
peak. If the outputs are terminated with 50 ohms, the output wave shape is still
sinusoidal but at a reduced voltage level, approximately 0.5 V rms.
The presence of output signal at each of these rear panel jacks is detected by a
- diode capacitor combination at each output jack and used as a signal for front-
~ panel indication of output fault. :If the rear panel output at any one of these four
jacks is not present, the red “OUTPUT FAULT” lamp is lit. Detector outputs at
all four jacks are gated together through diodes CRS, СКО, CR13, and CR17 and
fed to a transistor switch consisting of Q5, Q4, and Q3, which lights the output
fault lamp in the absence of output signal. |
The output signals as they are divided are fed to gates U4, U3, and U2 and are
selectively fed to the front-panel “STANDARD OUTPUT” jack according to the
frequency selector push button settings.
Power Supply Al
The ac power is conducted through J3 on the rear panel, through F1, and the
voltage selection switch S2 to the dual primaries of transformer T1. A diode
bridge on circuit board A1 connected to the secondary of T1 delivers full-wave
~ rectified unregulated 18 V dc to the separately:mounted filter capacitor C3. From
there, the dc is fed to the Distribution Amplifier board A4.
- The ac is fed from the center tap of transformer T1 to A1J1-7. Ul, a 7805
~ voltage regulator, provides a regulated 5-V dc output on connector A1J1-4, 5,
and 6. | |
Page 6.3
Input Translator Board A3 (Options 07, 08, and 12)
The input translator board A3 contains a 10-MHz crystal-controlled phase-lock
loop. It is phase locked to the incoming standard frequency reference. For Option
07, the input frequency is 5 MHz. For option 08, the input frequency is 1 MHz;
for option-12, the input-frequency-is-100-KHz.——... —- e
The input signal is applied via J1-3 to the differential amplifier, comprising Q1,
Q2, and Q3. The signal is amplified and squared by Ul and fed into U2, the
phase-locked-loop circuit. The outputs from U2 are fed to the frequency error
amplifier U3. The output of U3 is fed to a low-pass filter consisting of R20 and
C11. This dc error signal controls the voltage on the Varicap C13, which in turn
controls the frequency of crystal Y1. The VCXO (voltage controlled crystal
oscillator) includes Q5 and feedback capacitors:C17 and C18. The output from
the VCXO is fed to Ul and divider chain U4, US. Appropriate jumpers
determine the divide ratio of the feedback signal to the phase-locked loop circuit
U2. The divide ratios are 2, 10, or 100 for options: 07, 08, 12, respectively. The
output signal from the translator appears on A3J1-7. This signal is fed to the
distribution amplifier board A4 via connector A4J1-10.
A loss-of-lock signal is provided on A3J1-10. This signal is low when the
translator phase-locked loop is not locked to the incoming reference. This will
cause the “OUTPUT FAULT” lamp on the front panel to be illuminated.
Audible Alarm A2 (Option 20)
~The audible alarm will operate when there is a loss of signal at any rear-panel
output connector or if there 1s no input signal present at the “OSC INPUT”
connector. On units accepting input frequencies other than 10 MHz (option 07,
08, or 12 installed), the alarm will operate if the input translator does not acquire -
phase lock to the input signal. Potentiometer R3 controls the volume level.
Model 8140T Line Tap Modules
The output frequency from each Line Tap is derived directly from the 10-MHz
- distribution line signal from the Model 8140 base station. The Line tap samples
the trunk line signal with a high impedance buffer stage which does not load
down the 50.0 line impedance. The signal is then amplified, and divided in
frequency if other than 10 MHz is required, then refiltered and fed to the output
connector as a 600 mV rms signal at 50 ©. If the output is not terminated, it will .
drive TTL loads with a maximum fanout of 2.
— Page 6.4
Model 8140VT VersaTap™ Modules
The VersaTap is a single-frequency synthesizer whose output is factory-set to
any frequency between 1 KHz and 16 MHz in 1 KHz increments, and between
16 and 20 MHz in 2-KHz increments. Some other frequencies can be provided
on special order. The VersaTap accepts 10 MHz signal from the Model $140. A _
VCXO (voltage-controlled crystal oscillator) and a phase-locked loop are followed
by a divider chain synthesizing the desired frequency.
Diagnostics
General ............... eonnocanos PT 7,2
Diagnostic List ............... 0.0.0... 7.2
- Alignment / Check Procedures ............ 7.4
—A3 Input Translator Board vrecvaenseccemeees T4
a A2 Audible Alarm ............. eooccocenonone .. 7.5
| Model 8140T Line Tap Module 0.000000... 7.5
— Page 7.2
DIAGNOSTICS
In case of difficulty:
I. Refer to the Diagnostic List below, and perform the indicated checks.
II. Perform the alignment procedures which seem to relate to any unresolved
symptoms. | |
HI. Contact Customer Service for additional help, if necessary.
— 1V. Y the unit must be returned to the factory, please contact Customer Service
for a return authorization number and further instructions. | |
Diagnostic Li
If you observe these symptoms Do these checks;
A. No operation. “Power Lamp”does
not illuminate. | 1, 2, 3
B. “POWER” lamp lights, “OUTPUT | о
FAULT” lamp is lit. 4,5
C. “OUTPUT FAULT” lamp not lit, yet
no output from any Line Tap. Signal available
at the “STANDARD OUTPUT” connector. 6
D. “OUTPUT FAULT” lamp not lit; no signal
at one remote location; others OK. 7
E. “OUTPUT FAULT” lamp not lit, yet
no output from any Line Tap. Signal not available
at the “STANDARD OUTPUT” connector. | 10
Checks
1. Check that the unitis plugged into the correct ac power.
2. Remove and check the fuse for correct type and electrical continuity. Replace
the fuse with the correct type if it is faulty. В |
3. Check that the “115 VAC/230 VAC” switch on the rear panel is in the correct
position for the line voltage used. |
4.
8.
9.
Page 7.3
Check that the signal source is supplying a signal of the correct
frequency and amplitude to the “OSC INPUT” connector.
| Option Correct Input Frequency
- None—}; 10-MHZ standard'input frequency
07 5-MHz standard input frequency
08 1-MHz standard input frequency
12 100-KHz standard input frequency
Disconnect the distribution coax lines, one at a time, from connectors “A”, “B”,
; “C”, and “D” while observing the “OUTPUT FAULT” lamp. If the lamp
extinguishes when a distribution line is disconnected, check that part of the
network for shorts or improper loads.
‘Disconnect the distribution coax lines from connectors “A”, “B”, “C”, and “D”.
Using an oscilloscope, check that a 10-MHz signal, superimposed on +12 V
dc, is present. If no +12 V dc, do checks 8 and 9.
. Replace the Line Tap module at that location with another known to be good. If
the signal is restored to that location, return the Line Tap to the factory for
exchange. | I
Remove the cover. Check that pin A4J2-4 has +12 V dc. + 1 V with reference
to pin A4J2-1. If not, check U10 on the A4 Distribution Output Amplifier.
Remove the cover. Check that pin A4J2-2 has +22 V de. + 3 М with reference
to pin A4J2-1. If not, check the Power Supply Al. |
10. Remove the cover. Check that pin A4J2-3 has +5 V dc. + 1 V with reference to
A4J2-1. If not, check U1 on the Power Supply Al. a
Ta
If none of these checks leads to discovery of the fault, a more serious difficulty
exists, most likely located in the Distribution Output Amplifier circuit board A4.
If Option 07, 08, or 12 is installed, check that a 10-MHz signal is available at pin
A4J1-10 with a correct drive signal at the “OSC INPUT” connector. If no 10-MHz
signal is present, the fault may lie in the A3 Input Translator circuit board. |
Page 7.4
-— ALIGNMENT/CHECK PROCEDURES
| CAUTION ]
The following y procedures should be done only by a qualified electronics
technician and only ifi Improper operation is suspected.
Transl r Be A3
Equipment Required
Digital or Analog Voltmeter, 20 ,000 2/V minimum impedance.
Procedure
Do the following steps to align the Input Translator, if option 07, 08, or 12 is |
— installed: | - | |
[1] Кетоуе the top cover.
| [2] Connect the reference signal to the “OSC INPUT” connector. The
si ignal should be that shown in the table below: o
Option] Correct Input Frequency
07 |5-MHz standard input frequency |
| 08 1-MHz standard input frequency о
12 TOOK: standard ; input frequency
I 3) Using the voltmeter, check the dc voltage at the brown test point on |
the Input Translator Board A3. a
| Voltmeter -
: [Brown Test Poin ground
+5 to +7 Vdc
Page 7.5
[ 4] If the voltage is not between +5 and +7 V dc, adjust the trimmer
capacitor C15 until the voltage is centered between the two values.
NOTE
This adjustment compensates for the aging characteristics of the crystal and
_ may be required every 3 —4 years.
[ 5] Install the top cover.
ible Alarm A2 ion 20
Equipment Required
“7 None.
Procedure |
Do the following steps to adjust the volume of the Audible Alarm, if option 20 is
installed:
[1] Remove the top cover.
[2] Disconnect the reference signal from the “OSC INPUT” connector.
NOTE
This simulates the loss of the input signal. The audible alarm should
operate.
[3] Using a small, flat-blade screwdriver, adjust potentiometer R3 on
-the Audible Alarm circuit board A2 until the volume is correct.
[ 4] Install the top cover.
140 Lin
Equipment Required
"Oscilloscope, 60.MHZ bandwidth.
; 10:1 oscilloscope probe -
Procedure a.
Do the following steps.to check the Model 8140 Line Tap module:
[ 1] Connect a coaxial BNC tee connector to the output of the line tap
module under test.
[ 2] Connect a 50;0hm termination load to one end of the tee connector.
Page 7.6
o [ 3] Set the oscilloscope for:
DC coupling‘
1 cycle/cm sweep.
- [ 4] ‘Connect the oscilloscope to the other end of the tee connector.
NOTE
Use a 10:1 attenuating oscilloscope probe if the expected output frequency
from the line tap module is 5 or 10 MHz. EE
[5] Check the signal voltage from the line tap module.
o NOTE
~The signal should be a sine wave 1.4 V peak-to-peak minimum, 2.0 V peak-to-
Peak typical, symmetrically about the O-voltage reference. EE
В В [6] Disconnect the 50 Q termination load.
[7] Check the signal voltage from the line tap module.
‘ | NOTE
The signal should be a sine wave 3.0 V peak-to-peak minimum, 4.0 V peak-to-
~~ peak typical, with a dc offset such that the negative peaks almost touch the 0-
volt reference. | | В |
| Diagrams
Introduction ...... 0000000000000000000000000008 |
| Mainframe Assembly Drawing cenencenonenea
Mainframe Schematic Diagram PT en
= A1- Power Supply Assembly Drawing e...
Al. Power Supply ‘Schematic Diagram ....
A2 Audible Alarm (Option 20)
| Assembly Drawing ....................oce
A2 Audible Alarm (Option 20)
Schematic Diagram .......................
A3 Input Translator (Option 07, 08, 12)
Assembly Drawing 00.0.0... |
A3 Input Translator (Option 07, 08, 12)
Schematic Diagram ......... 2000000000000
— Ad Distribution Amplifier |
Assembly Drawing ....................... |
Ad Distribution Amplifier
Schematic Diagram 0000000..0.... ......
Ш Page 8.2
DRAWINGS AND DIAGRAMS
Introduction
The assembly drawings and schematics, provided in this section as an
aid ta trouble-shooting, include-those.for-optional-assemblies—If-the-
unit you have does not have option 07, 08, or 12 (Input Translator
Board A3), then “OSC INPUT” J2 will be connected directly to the
Distribution Amplifier A4 at P4-10 and P4-11. The mainframe harness
is not provided with option connectors if the option is not implemented.
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Page 8.10
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Replaceable Parts - - Al, Power Supply … 9.4
Replaceable Parts —-« AZ, Audible Alarm
(Option 20) ecoconoocaocacaooacencoocarecae. 92.5
Replaceable Parts -—: A3, Input Translator |
| (Option 07, 08, or 12) ...... encooconacaco 06
Replacement Parts —— A4, Distribution
Amplifier nonecocacooraceococacanoneoconence 9.8
Ancillary Kit Parts List + eee 9,12
Page 9.2
INTRODUCTION -
The parts lists on the following pages include mainframe components,
complete printed circuit board assemblies, and pc board components that are
~ normally considered replaceable.
A parts list is also included for the ancillary kit.
— Page 93
REPLACEABLE PARTS - MAINFRAME
Reference
Designation
Cl
C2
C3
DS1
DS2
Fl
R1
R2
Si
S2
TI
Part
um
C00202
C00202
C0300
DS00045
DS00042
~~ FOOR75
R01181
RO1151
S00001
500102
` 110000
Description
Capacitor, 0.01 uf, 1600 Vdc
Capacitor, 0.01 pf, 1600 Vdc
Capacitor, 8900 pf, 25 Vdc
LED, green
LED, red
Fuse, 3/4 Amp (AGC 3/4)
_ Resistor, 180 Q, 1/4 W
. Resistor, 150 ©, 1/4 W |
Switch, pushbutton
Switch, DPDT, slide
Transformer, power
Page 9.4
"REPLACEABLE PARTS ~ A1 POWER SUPPLY
Reference Part
Designation Number Description . =~ =
AI — 003600” “Assembly, power supply, pc board
C1 … C07222 Capacitor, 2200 pf, 25 Vdc
e C09010 Capacitor, 1 uf, 50 Vdc
CR1-CR4 CRO05624 Rectifier, 3 amperes
J1 JI0014 Header, 6-pin
Ul U07805 Regulator, 5 Vdc
LS Page ! 9.5
REPLACEABLE PARTS - A2 AUDIBLE ALARM
| (OPTION 20) a
Reference
Cl
J1
RI
—R3
SP1
OUI
Part
- CO1104 “
J10014
RO1103
RO1103
В05502
SP00001
U75451
-D “ o |
— Assembly, Audible Alam (Option 20), p pc
board | -
- Capacitor, ceramic, 0.1 Hf, 25 Vdc
‘Header, 6-pin |
Resistor, 10 KO, 1/4 W a
- Resistor, 10 KC, 1/4 W
Potentiometer, 5 KQ
Sonalert, SBM428
Integrated Circuit, SN75451B
Page 9.6
REPLACEABLE PARTS - A3 INPUT TRAN SLATOR
(OPTION 07, 08, OR 12) |
[MORE]
Reference Part
— Designation Number Description = | |
AB... 004500. Assembly, Input Translator (Option 07,08, 12),
| pc board
C1 C02103 Capacitor, ceramic, 0.01uf, 25 Vdc
C2 C02103 Capacitor, ceramic, 0.01uf, 25 Vdc
C2* C01104 Capacitor, ceramic, 0.1uf, 25 Vdc
C3 C09010 - Capacitor, electrolytic, 1 pf, 50 Vdc
C4 SE Not used. |
«C5 C02103 Capacitor, ceramic, 0.01-uf, 25 Vdc
C5* C01104 Capacitor, ceramic, 0.1 uf, 25 Vdc
C6 - C02103 Capacitor, ceramic, 0.01 pf, 25 Vdc
C7 -C07220 Capacitor, electrolytic, 22 uf, 25 Vdc
C8 C02103- © Capacitor, ceramic, 0.01 pf, 25 Vdc
C9 C02103 Capacitor, ceramic, 0.01 uf, 25 Vdc
C10 C09010 Capacitor, electrolytic, 1 uf, 50 Vdc
- C11 -C02103 — Capacitor, ceramic, 0.01 pf, 25 Vdc
CR CO5560 - -.Capacitor, mica, 56 pf, 500 Vdc
C13 CR00209 Varicap, MV209 |
С14 C05200 Capacitor, mica, 20 pf, 500 Vdc
C15 C00040 Capacitor, variable, 4.5 — 20 pf
C16 C02103 Capacitor, ceramic, 0.01 pf, 25 Vdc
C17 C05301 Capacitor, mica, 300 pf, 500 Vdc
C18 C05121 ‘Capacitor, mica, 120 pf, 500 Vdc
C19 C02103 ‘Capacitor, ceramic, 0.01 uf, 25 Vdc
C20 C02103 Capacitor, ceramic, 0.01 pf, 25 Vdc
C21 C02103 Capacitor, ceramic, 0.01 pf, 25 Vdc
C22 C02103 Capacitor, ceramic, 0.01 pf; 25 Vdc
C23 C07220 Capacitor, electrolytic, 22 uf, 25 Vdc
C24 C02103 Capacitor, ceramic, 0.01 pf, 25 Vdc
C25 C02103 ‘Capacitor, ceramic, 0.01 pf, 25 Vdc
C26 C07220 Capacitor, electrolytic, 22 uf, 25 Vdc
* Used with Option 12 only.
CR1 CR04148 Diode, 1N4148
CR2 CR04148 Diode, 1IN4148
Ji J10014 Header, 6-pin
Q1 Q04258 “Transistor, 2N4258
Q 004258 Transistor, 2N4258
Q3 Q04126 Transistor, 2N4126
Q4 Q04126 Transistor, 2N4126
Q5 Q03563 Transistor, 2N3563
Page 9.7
REPLACEABLE PARTS - A3 INPUT TRANSLATOR
Reference
RIOS
© Y00011
(OPTION 07, 08, OR 12)
(Continued)
Part
Number Description
R01560 Resistor, 56 Q, 1/4 W, 5%
RO1560 - Resistor, 56 Q, 1/4 W, 5%
R01391 Resistor, 390 Q, 1/4 W, 5%
R01681 Resistor, 680 Q, 1/4 W, 5%
R01182 = Resistor, 1.8 KQ, 1/4 W, 5%
RO1102- Resistor, 1 KQ, 1/4 W, 5%
R01272 Resistor, 27 KQ, 1/4 W, 5%
R01472 Resistor, 4.7 KQ, 1/4 W,5% [Not used] -
R01103 í Resistor, 10 KQ, 1/4 W, 5%
R01473 Resistor, 47 KQ, 1/4 W; 5%
R01153 Resistor, 15 KQ, 1/4 W, 5%
R01103 Resistor, 10 KQ, 1/4 W, 5%
R01473 í Resistor, 47 KQ, 1/4 W, 5%
R01682 Resistor, 6.8 KQ, 1/4 W, 5%
R01682 Resistor, 6.8 KQ, 1/4 W, 5%
R01682 Resistor, 6.8 KQ, 1/4 W, 5%
RO1682 Resistor, 6.8 KQ, 1/4 W, 5%
RO1103 Resistor, 10 KQ, 1/4 W, 5%
RO1102 Resistor, 1KQ, 1/4 W, 5%
RO1103 Resistor, 10 KQ, 1/4 W, 5%
R01104 Resistor, 100 KQ, 1/4 W, 5%
RO1103 Resistor, 10 KQ, 1/4 W, 5%
R01153 Resistor, 15 KQ, 1/4 W, 5%
R01102 Resistor, 1KQ, 1/4 W, 5%
R01221 Resistor, 220 Q, 1/4 W, 5%
`К01472 Resistor, 4.7 KQ, 1/4 W, 5%
R01103 Resistor, 10 KQ, 1/4 W, 5%
R01470 Resistor, 47 Q, 1/4 W, 5%
RO1101 Resistor, 100 Q, 1/4 W, 5%
-RO1100 Resistor, 10 Q, 1/4 W, 5%
ULS132 Integrated Circuit, 74LS132
Ul1C44 Integrated Circuit, 11C44 Ù
U00741 Integrated Circuit, HA741CP
U00411 Integrated Circuit, HA411 [Alternate part]
U4LS90 Integrated Circuit, 74LS90
U4LS90 - Integrated Circuit, 74LS90
Crystal, 10 MHz
Page 9.8
REPLACEABLE PARTS — A4 DISTRIBUTION
Reference
e
C3
C4
CS
có
C7
C8
o
cio
Ci
C12
- C3
C14
C15
C16
C17
C18
C19
C20
C21
C22
C23
C24
Cs
C26
C27
C28
C29
C30
GI
C32
C33
C34
C35
C36
C37
C38
C39
[MORE]
AMPLIFIER a.
Part
004400 Assembly, Distribution amplifier, pc-board
C02103 Capacitor, ceramic, 0.01pf, 25 Vdc
==------- Not used. | ;
= CO9010 . Capacitor, electrolytic, 1.0 uf, 35 Vdc
C02103 .Capacitor, ceramic, 0.01pf, 25 Va
C02103 Capacitor, ceramic, 0.01pf, 25 Vdc
- C02103 Capacitor, ceramic, 0.01pf,25Vde
-— C12226 : Capacitor, tantalum, 22 uf, 25 Vdc
-C09010 Capacitor, electrolytic, 1.0 pf, 35 Vdc
C12226 Capacitor, electrolytic, 22 pf, 25 Vdc
‚ C02103 Capacitor, ceramic, 0.01uf,25 Vdc
C02103 Capacitor, ceramic, 0.01uf, 25 Vdc
C02103 Capacitor, ceramic, 0.01uf, 25 Vdc
-C02103 Capacitor, ceramic, 0.01 uf, 25 Vdc
- C02103 Capacitor, ceramic, 0.01pf, 25 Vdc
C02103 Capacitor, ceramic, 0.01uf, 25 Vdc
omo Not used. Le о
C05121 = Capacitor, mica, 120 pf, 500 Vdc
o Not used. | | - |
C02103 Capacitor, ceramic; 0.01 uf, 25 Vde
C02103 Capacitor, ceramic, 0.01pf, 25 Vdc
C02103 Capacitor, ceramic, 0.01uf, 25 Vdc
C02103 Capacitor, ceramic, 0.01 HÍ, 25 Vdc
C05121 Capacitor, mica, 120 pf, 500 Vdc =~
ee Not used. o |
C02103 Capacitor, ceramic, 0.01hf, 25 Vde
C02103 ‘Capacitor, ceramic, 0.01pf, 25 Vdc.
C02103 Capacitor, ceramic, 0.01pf,25 Vdc
CO05121 Capacitor, mica, 120 pf, 500 Vdc
e ~ Not used. | |
-C02103 - .. Capacitor, ceramic, 0.01uf, 25 Vdc
C02103 Capacitor, ceramic, 0.01pf, 25 Vdc
C02103 Capacitor, ceramic, 0.01uf, 25 Vdc
C02103 “Capacitor, ceramic, 0.01uf, 25 Vdc
e —— ‚Not used. | В
C05121 Capacitor, mica, 120 pf, 500 Vdc
C02103 Capacitor, ceramic, 0.01pf, 25 Vde
C02103 Capacitor, ceramic, 0.01uf, 25 Vdc
C02103 Capacitor, ceramic, 0.01pf, 25 Vdc
C05121
Capacitor, mica, 120 pf, 500 Vdc
— Page 9.9
REPLACEABLE PARTS — A4 DISTRIBUTION
Reference
Designation
C40
“ei
C42
C43
Cad
Cas
C46
C47
C48
C49
CRI
CR2
CR3
CR4
CRS
CR6
Part
Number
C05121
C05121
_C05121
C02103
C09010
C02103
C09010
C02103
CO9010.
C02103
CR04148
CR00277
CR00277
CR04148
СВ00277
CR00277
| CR04148
CR00277
CR00277
CRO4148
CRO0277 |
'CR00277
“CRO4148
210014
210014
L023R9
L023R9
L023R9
L023R9
L023R9
L023R9
L023R9
LO23R9
[MORE]
| Choke, RF, 3.
3.
Choke, RE, 3.
3.
3.
"AMPLIFIER (Continued)
Descripti
‘Capacitor, mica, 120 pf, 500 Vdc
Capacitor, mica, 120 pf, 500 Vdc
Capacitor, mica, 120 pf, 500 Vdc
Capacitor, ceramic, 0.01uf, 25 Vdc
~ Capacitor, electrolytic, 1.0 uf, 35 Vdc
Capacitor, ceramic, 0.01uf, 25 Vdc
Capacitor, electrolytic, 1.0 uf, 35 Vdc
Capacitor, ceramic, 0.01uf, 25 Vdc
… Capacitor, electrolytic, 1.0 uf, 35 Vdc
Capacitor, ceramic, 0.01pf, 25 Vdc
Diode, 1N4148
Not used.
Diode, IN277
.Diode, 1N277
Diode, 1N4148
Not used.
Diode, 1N277
Diode, 1N277
Diode, 1N4148
Not used.
Diode, 1N277
Diode, 1N277
Diode, 1N4148
Not used.
Diode, 1N277
Diode, 1N277
Diode, 1IN4148
Header, 6-pin
Header, 6-pin (Pin 5 removed.)
- Choke, RF, 3.9 HH
Choke, RF,
Choke, RF,
Choke, RF,
Page 9.10
REPLACEABLE PARTS — A4 DISTRIBUTION
AMPLIFIER (Continued)
Reference Part
Designation Number Description
L9 - L04000 Inductor, toroidal
LIO “ Lou000” ‘Inductor, toroidal
L11 L04000 Inductor, toroidal
L12 L04000 Inductor. toroidal
L13 104000 Inductor, toroidal
Q1 Q04258 - Transistor, 2N4258
Q2 Q04258 Transistor, 2N4258
Q3 Q04124 Transistor, 2N4124
Q4 Q03565 Transistor, 2N3565
Q5 Q03565 Transistor, 2N3565
Q6 Q04126 = Transistor, 2N4126
R1 R01560 Resistor, 56 Q, 1/4 W, 5%
R2 R01560 Resistor, 56 Q, 1/4 W, 5%
R3 R01391 Resistor, 390 Q, 1/4 W, 5%
R4 К01681 Resistor, 680 Q, 1/4 W, 5%
RS R01182 Resistor, 1.8 KQ, 1/4 W, 5%
R6 R01331 Resistor, 330 Q, 1/4 W, 5%
R7 R01101 = Resistor, 100 Q, 1/4 W, 5%
R$ К01472 - Resistor, 4.7 KQ, 1/4 W, 5%
R9 R01103 Resistor, 10 KQ, 1/4 W, 5%
R10 R01270 Resistor, 27 Q, 1/4 W, 5%
R11 R01102 Resistor, 1 KQ, 1/4 W, 5%
R12 R01390 Resistor, 39 Q, 1/4 W, 5%
R13 R01104 | Resistor, 100 KO, 1/4 W, 5%
R14 R01390 Resistor, 39 Q, 1/4 W, 5%
R15 R01104 Resistor, 100 KO, 1/4 W, 5%
R16 R01390 Resistor, 39 Q, 1/4 W, 5%
R17 R01104 Resistor. 100 KO, 1/4 W, 5%
R18 R01390 Resistor, 39 ©, 1/4 W, 5%
R19 R01104 Resistor, 100 KQ, 1/4 W, 5%
R20 R01000 Resistor, 0 Q
R21 R01224 Resistor, 220 KQ, 1/4 W, 5%
R22 R01126 Resistor, 12 MQ, 1/4 W, 5%
R23 e Not used.
R24 R01101 Resistor, 100 Q, 1/4 W, 5%
R25 R01183 Resistor, 18 KQ, 1/4 W, 5%
R26 R01560 Resistor, 56 Q, 1/4 W, 5%
R27 R01101 Resistor, 100 Q, 1/4 W, 5%
[MORE]
Page 9.11
REPLACEABLE PARTS - A4 DISTRIBUTION
AMPLIFIER (Continued)
Reference
Part
U4LS20
U4S140
U4LS37
U4LS37
U4LS90
ULS112
U4LS90
U4S140
U48140
U78T12
Integrated Circuit, SN74LS20
Integrated Circuit, SN74S140N
— Integrated Circuit, SN74LS37
— Integrated Circuit, SN74LS37
Integrated Circuit, SN74LS90
Integrated Circuit, SN74LS112N
Integrated Circuit, SN74LS90
Integrated Circuit, SN74S140N
Integrated Circuit, SN74S140N
— Voltage Regulator, 78T12ACT
| Page 9.12
ANCILLARY KIT PARTS LIST
Part
Number
FOOR75
004490
P00002
W01000
Fuse, 3/4 Ampere
| Termination, 50:Q, DC-isolated _
Plug, BNC
Cord, ac power | |
THE FOLLOWING IS A LIST OF MANUAL REVISIONS
- À resistive circuit protector has been installed in Model 8140s, Serial Numbers 0816 and above
(0817, 0818, 0819 excluded) to protect the distribution power supply from overload damage.
Manual page revisions are as follows: |
PAGE REVISION
8.10 Replace L13 with resistor symbol, -
9.10 | Change L13 part number to FCP1R3, and description to circuit protector, 1.3A.
Errata Revision 2.1 | | Page 1
Frequency Distribution Amplifier Model 8140 _ May 4, 1994

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