RTS Ssa-324 manual

SSA-324
System Interface
(System to System Adapter)
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9350697900
Rev G 11/2006
SHIPPING TO THE MANUFACTURER
PROPRIETARY NOTICE
The product information and design disclosed herein were originated by
and are the property of Telex Communications, Inc. Telex reserves all
patent, proprietary design, manufacturing, reproduction, use and sales
rights thereto, and to any article disclosed therein, except to the extent
rights are expressly granted to others.
COPYRIGHT NOTICE
Copyright 2006 by Telex Communications, Inc. All rights reserved.
Reproduction, in whole or in part, without prior written permission from
Telex is prohibited.
All shipments of product should be made via UPS Ground, prepaid (you
may request from Factory Service a different shipment method). Any
shipment upgrades will be paid by the customer. The equipment should
be shipped in the original packing carton. If the original carton is not
available, use any suitable container that is rigid and of adequate size. If
a substitute container is used, the equipment should be wrapped in paper
and surrounded with at least four (4) inches of excelsior or similar
shock-absorbing material. All shipments must be sent to the following
address and must include the Proof of Purchase for warranty repair.
Upon completion of any repair the equipment will be returned via
United Parcel Service or specified shipper, collect.
See the enclosed warranty card for further details.
Factory Service Department
Telex Communications, Inc.
8601 East Cornhusker Hwy.
Lincoln, NE 68507 U.S.A.
Attn: Service
CUSTOMER SUPPORT
This package should include the following:
WARRANTY NOTICE
Technical questions should be directed to:
Customer Service Department
RTS/Telex Communications, Inc.
12000 Portland Avenue South
Burnsville, MN 55337 USA
Telephone: 800-392-3497
Fax: 800-323-0498
RETURN SHIPPING INSTRUCTIONS
Customer Service Department
Telex Communications, Inc. (Lincoln, NE)
Telephone: 402-467-5321
Fax: 402-467-3279
Factory Service: 800-553-5992
Please include a note in the box which supplies the company name,
address, phone number, a person to contact regarding the repair, the type
and quantity of equipment, a description of the problem and the serial
number(s).
TABLE OF CONTENTS
0
.................................................... 2
COPYRIGHTNOTICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
PATeNTNOTICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
UNPACKING AND INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
WARRANTYINFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
RETURN SHIPPING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
PROPRIETARYNOnCE
SECTION 1; DESCRIPTION AND SPECIFICATIONS
.................................. 5
.....................................................
1.2.1 FUNCTIONAL SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 SPECIFICATONS
SECTION 2: INSTALLATION
5
5
................................................ 9
2.1 MECHANICAL INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
i.
8
2.2 ELECTRICALINSTALLATION
SECTION S: OPERATION
............................................. 9
..................................................11
3.1 CONTROW: AND CONNECTORS
SECTION 7: DIAGRAMS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
...................................................12
SSA324 User Manual
3
R105
R205
TB1-1,2 UlOlA
TB1-5,6 U201A
U102A
U202A
UlOlB
U201B
U103B
U203B
T105
T205
U103A
U203A
U104A
U204A
U105
U205
Bilateral
Filter
P i r
Buffer
Amp
TI05
T205
U104 B
U204 B
Four
-
Current Source
@=5 mA/volt
-
25k
Nom
JlOl
5201
SlOl
S201
S105
S205
W103
W203
-rFt%&TH-t
Two
wire
Input
Zin=lO k
Nominal
Unbalanced
Switch
Buffed
Switch
Test
Amplifer - Switch
Pickoff
11dB -
Reference
Jumper
Level From
- RTS (2 Wire)Adjust
former
[
Amplifier
19 dB
Differential
Input Buffer
Amplifier
U106
U206
-
Driver
Null
r
-
t
Duck
SSA324 User Manual
-
Circuitry
4
-
w
Transformer
Figure 1-1
SSA324 Block Diagram System Interface (System to System Interface)
4
Two
Optional Wire
Trans- -+
Output
former
U102C
U202C
Circuitry
~
JlOl
J102
i
~
r
e
Output
~
SECTION 1:DESCRIPTION AND SPECIFICATIONS
j
)1.1 DESCRIPTION (See Block Diagram, Figure 1-1)
,
The Model SSA324 is a System to System Adapter (or interface). It interconnects the voice signals between different
intercom systems. In addition, it can optionally interconnect
"Calls" or tally signals between systems. Each SSA324 includes two two-wire to four-wire converters. The four-wire
interface can deliver and accept high level signals such as
those from the McCurdy intercom system. An SSA324 can
also function as a two-wire to two-wire interface by interconnecting the two individual interfaces at the four-wire level.
The SSA324 carries two voice channels when used as a dual
two-wire to four-wire interface, and one voice channel when
functioning as a two-wire to two-wire interface.
A front panel channel select switch for each of the two
interfaces (A and B) will select one of two, two-wire channels. For ClearCom use, the switch will be in the Channel 2 .
position. For Audiocom use, a rear panel switch will select
balanced two-wire operation.
Front panel controls include 1) adjustments for null, level,
ducking, 2) switches for monitoring and channel select.
Rear panel controls include balance/unbalance switches for
the two-wire connection of each interface. Rear panel connectors include two XLR3 connectors for two-wire, eight
terminals for two four-wire interconections, one 25 pin D
connector for duplicate four-wire connections plus options
connections. The terminals are useful for rapid field connections. The D connector aids rapid replacement where meantime-to-repair is an issue and also allows option strapping.
The SSA324 replaces the Model TWI224 and TWI222 interfaces where powering from the intercom is not required.
Differences between the Model TWI224 / TWI222 interface
and Model SSA324 include the following: 1)The SSA324 is
self (locally) powered, the TWI224 / TWI222 is usually
powered from the TW line or may be locally powered. 2) The
SSA324 has a maximum output at the four-wire output port
of +22 dBm, the TWI224 / TWI222 maximum output is 9
dBm.
Converter A's two-wire port is driven by an active balanced
bilateral current source (an optional transformer may be
added). Converter B's two-wire port is similar to Converter
A's.
Converter A's four-wire output port is driven by an active
balanced voltage line driver (or via an optional transformer).
A build-out resistor (about 33 ohms) in each leg of the
differential output maintains stability driving long cables.
Converter B's four-wire output port is similar to converter
A's.
The optional transformers can be used to provide higher
common mode voltage isolation between the four-wire system(~)and the two-wire systems.
Converter A's four-wire input port is active balanced, biidging, ten thousand ohms impedance. Converter B's four-wire
input port is similar to converter A's. (An optional transformer is available for the four-wire input(s).
Adjustable, 0 to 30 dB. Toggles from one direction to the
other (threshold is factory set). There is one adjustment for
interface A and one for interface B. Each interface has depth
level adjustment (front panel).
Monitoring
Uses standard headset. Front Panel has six pin female XLR
type headset connector.
Switchon frontpanel activatesthe monitoring function. User
uses headset microphone or a built in oscillator to adjust for
null in headset earphones (or via a built-in oscillator which is
jumper selected by a jumper on the printed circuit board).
There are three null adjustments associated with each twowire port. These are resistive (medium), capacitive (high),
and inductive (low) nulls. Medium, High, and Low refers to
frequency ranges; medium centers about 1kilohertz, high, 3
kilohertz, low, 300 hertz.
1.2.1 FUNCTIONAL SPECIFICATIONS
The Model SSA324 consists of two two-wire to four-wire
convertersin a singlepackage (converter A and converter B).
If the two converters are interconnected, the Model SSA324
then functions as two-wire to two-wire converter. The
method of interconnection is as follows: converter A's fourwire output is connected to converter B's four-wire input;
converter A's four-wire input is connected to converter B's
output.
There are two level adjustments for interface A (to-from
two-wire) and two for interface B (to-from two-wire).
SSA324 User Manual
5
Application
The Model SSA324 aljplications include the following:
1Lterfaceaudio signals between intercom systems as shown in Table 1-1, below.
Table 1-1
Number of Channels Interfaced with the Model SSA324 by System
System 2
McCurdy/
Generic 4W
2.
Audiocom
Clearcorn
RTS/2WB
RTS/2WU
RTSI4'WB
2W
2!inhM
2d!Jkd
2W
il2ima!
Interface (using optional plug in boards) the following non-audio signals:
Audiocom call signal to Audiocom call signal.
RTS Systems call signal to RTS Systems call signal.
RTS Systems call signal to form C relay contact transfer.
Audiocom call signal to form C relay contact transfer.
Contact closure to RTS Systems call signal generation.
Contact closure to Audiocom call signal generation.
ClearCom to RTS Systems call and vice versa.
6
SSA324 User Manual
j7/
13.1 ELECTRICAL SPECIFICATIONS
(Specifications at 120VACline voltage)
Individual Interface Specification
(each of two dividual interfaces)
Signal-to-Noise Ratio (Reference: 1 kilohertz, 0 dBu at two-wire)
Two-Wire to Four-Wire: -60dB
Four-Wire to Two-Wire: -60 dB
Two-Wire Input
Crosstalk (Reference: 1kilohertz, 0 dBu)
Impedance:5,000 ohms +loo%, -20% single ended,
10,000 ohms +100%, -20% differential
Operating Levels:-20 dBu to +O dBu, nominal
Two-Wire Output
Impedance:5,000 ohms 20% single ended,
10,000 ohms 2Wo differential
System A to System B,
Two-wire to Two-wire
200 hertz to 5 kilohertz: -50 dB,
Environmental
Temperature
Operating:OOto 50' celsius
Operating Leve1s:O.l mA to 10mA, nominal
Storage:-40° to 85O celsius
Four-Wire Input
Humidity0 to 95%, non-condensing
Impedance:10,000 ohms minimum single ended,
20,000 ohms minimum differential
Mains Voltage
Operating Levels:-10 dBu to +8 dBu, nominal
Standard:120volts lo%, 50-60 hertz
Four-Wire Output
*P Option:230 volts lo%, 50-60 hertz
Impedance:ohms single ended or differential
Operating Levels:-10 dBu to + 8 dBu, nominal
Transfer Functions (Duck Level set to no ducking)
Voltage Gain, Four-Wire In to Two-WireOut*
Level Pot 100% rotation:O 3 dB
Level Pot 50% rotation:-15 dB 4 dB
Transfer Functions (Duck Level set to no ducking)
Voltage Gain, Two-Wire In to Fow-Wire Out**
Level Pot 100% rotation:22 dB 3 dB
Level Pot 50% rotation:8 dB 4 dB
Frequency Response (Reference: 1kilohertz, 0 dBu input)
Four-Wire Input to
Two-Wire Output:200 hertz to 5 kilohertz, +1,-4 dB, typical
#D 0ption:lOO volts + 10%. -5%, 50-60 hertz
Mains Amperes
StandarkO.2OA @ 120 volts lo%, 50-60 hertz
*P 0ption:O.lOA @ 230 volts 10%.50-60 hertz
#D Option:0.22A @ 100volts + lo%,-5%, 50-60 hertz
Dimensions
Height:1.72 inches ( 44 millimeters)
Widh8.19 inches (208 millimeters)
Deph8.00 inches (204 millimeters)
Weight
SSA324***:5.0 pounds (2.3 kilograms)
MCP1:l.O pounds (0.45 kilograms)
MCP2.1.0 pounds (0.45 kilograms)
Two-Wire Input to
Four Wire Output:250 hertz to 5 kilohertz, +1,-4 dB, typical
Fiish:Thermoplastic front panel, aluminum case, light gray finish.
Notes
* Where two-wire output voltage is output current times termination impedance, and termination impedance is 200 ohms 33nF.
** Null pots set for maximum null, 200 ohm 33nF nominal two-wire lie.
*** SSA324 weight with optional transformersin place.
SSA324 User Manual
7
Figure 2-1
Rear Panel, Model SSA324 System Interface
8
SSA324 User Manual
SECTION 2: INSTALLATION
2.1 MECHANICAL INSTALLATION
The Model SSA324 can be installed in 3 ways: a single unit
mounted in a half rack space using an optional Model MCP2
Kit for rack mounting a single unit; or two SSA324 supplies
mounted side by side using the optional MCPl Kit for rack
mounting two units side by side; or free standing using the
optional MCP8 Kit for adding side channels for non-rack
mounting portable use.
2.2 ELECTRICAL INSTALLATION
Earth
16VAC
16VAC
No Conn.
1
Earth
2
15
16
4-Wire Audio In Hi, System A
4-Wire Audio In Lo, System A
4-Wire Audio Out Hi, System A
4-Wire Audio Out Lo, System A
4
17
5
18
4-Wire Audio In Hi, System B
4-Wire Audio In Lo, System B
4-Wire Audio Out Hi, System B
4-Wire Audio Out Lo, System B
6
19
7
20
Call Send GND (A)
Call Send Hi (A)
DC Call Sig En GND (A)
DC Call Sig En Hi (A)
8
9
21
Relay Contact NO (A)
Relay Contact COM (A)
Relay Contact NC (A)
22
23
10
Relay Contact NO (B)
Relay Contact COM (B)
Relay Contact NC (B)
11
24
12
25
Call Send GND (B)
Call Send Hi (B)
DC Call Sig En GND (B)
DC Call Sig En Hi (B)
1
2
3
4
Mic Lo
Mic Hi
Headphone Com
Left Headphone Hi
Right Headphone Hi
No Connection
3
The connection for the headset used to set-up the interface is
on the Eront panel, all other connections are on the rear panel.
Figure 2-1 shows the rear panel connections. System A
two-wire connection is at J101, System B, 5102. These are
XLR-3-3 1 (female) type connectors. System A and B fourwire connectionsare at both TI31 and 5103. J103 also contains
connections to the option card, when installed. Low voltage
alternating current power is applied to 5104 (16 volts, AC).
Connector Pin-outs are listed below.
Two-Wire (LUJl@
*
*
Audiocom
Com
1
ClearCom
1
RTS
1
RTS
1
*S101 (System B) and/or S102 (System A) set to in position
for balanced operation.
** If option board installed and ClearCom call light operation
is required, move jumper W103 (System A) and/or jumper
W203 (System B) on motherboard to 2,3 position. Jumper
J103- 7,20 for System A, andlor J103- 12,25 for System B.
5
6
Audio In Hi
Audio In Lo
Audio Out Hi
Audio Out Lo
System A
TB 11
2
3
4
System B
TB 15
6
7
8
1
2
3
4
Place jumper on W2 for tone test signal, W3 for voice test
signal. Test signal used with headset and front panel nulling
adjustments to null return two-wire signal.
SSA324 User Manual
9
f
U
System A
CHI-Out
CH2 In
-
System B
'
I
. , , . I
N
N
/
/
L e v e l
N u \ \
C"
@I
0
SECTION 3: OPERATION
3.2 OPERATION
3.1 CONTROLS AND CONNECTORS
3.2.1 NULLING
F'ront Panel
Preset Controls as Follows:
Switches
1.
2.
3.
4.
Channel Select switch, CHl out / CH2 in, Sys. A.
Press momentary switch for nulling System A
Two-wire.
Channel Select switch, CHI out / CH2 in, Sys. B.
Press momentary switch for nulling System B
Two-wire.
ToProm RTS
Duck Level
Low
Med
Hi
Set to Midway
Set to CW
Set to Midway
Set to Midway
Set to CCW
Volume
10 O'clock
Press Test Switch
5.
I
XLR6-31 Female 6 pin headset connector
(DYNMIC HEADSET)
If test signal tone, adjust Med for null, then Hi, then Low.
If test signal voice, say ahhh into microphone, adjust Med for
null, then Hi, then Low.
sAI&ds
Release Test Switch
6. Monitor headphone level (VOLUME).
3.23 LEVEL SETTING
7.
/ O
- F
Indicator (Power) Green LED.
Have Talkers 1 and 2 on Fout-Wire System, Talkers 3 and 4
on Two-WireSystem. Adjust To /From RTS Controls so that
all Talkers can hear other at about the same level regardless
of which system the other talkers may be on.
LEVEL To RTs, System A.
LEVELFROM RTS, system A.
DUCK Level, System A.
3.2.3 DUCK SETTING
9.
10.
11.
12.
13.
Inductive (LOW) null, System A.
Resistive (MEDium) null, System A.
Capacitive (HIgh) null, System A.
Adjust DuckLevel only if full duplex operation is not possible
because of feedback. Adjust Duck Level carefully from CW
towards CCW. Only a very small amount of ducking should
be used.
14.
15.
16.
LEVEL TO RTS, System B.
LEVEL FROM RTS wire, System B.
DUCK Level, System B.
17.
18.
19.
Inductive (LOW) null, System B.
Resistive (MEDium) null, System B.
Capacitive (HIgh) null, System B.
Rear Panel
I
Switches
20.
21.
Unbalance (Out) Balance (In) / Select Two-Wire,
System A
. Unbalance (Out) Balance (In) / Select Two-Wire,
System B
SSA324 User Manual
11
SECTION 7: DIAGRAMS
Document
NumberSizem
SD6926
B
Schematic Diagram- System To System Adapter, Model SSA324, Sht 1 of 3
SD6926
B
Schematic Diagram- System To System Adapter, Model SSA324, Sht 2 of 3
SD6926
B
Schematic Diagrarn- System To System Adapter, Model SSA324, Sht 3 of 3
AS6926
B
Assembly Diagram, PCA, System To System Adapter, Model SSA324
12
SSA324 User Manual
+-WIRE
I N
4-WIRE
OUT
TRANSFORMERS T i 0 2 AND T202 NORMALLY NOT INSTALLED.
I
TRANSFORMERS T l O l AND T201 NORMALLY NOT INSTALLED.
1
LAST USED:
NOT USED:
C 1l 0
~
e 3o . D
? 1l 3003 :E~ li 0
10
3 . J~l1O0i 3
.Ri77.
R126.Rl27
!
TRANSFORMERS T I 0 3 AND T 2 0 3 NORMALLY NOT INSTALLED.
CUT TRACES ON P.C.B. AS SHOWN I F TRANSFORMERS ARE
TO BE USED.
NOTES: UNLESS OTHERWISE SPECIFIED
I
CALL SEND
b>
22K
S205
CHI-OUT
FRONT PANELCH~-*~
0 N.C.
I
I
1.
CONTRACT NO.
Drown
RTS
SYSTEMS
SCHEMATIC DIAGRAM-
eurtmnk. c a l l t o r n l a
SYSTEM TO SYSTEM
ADAPTER. MODEL SSA324
NOT USED:
R226.R227
O P T I O N CAR0
&CALL
-'CALL
SENO GNO
SENO H I
(A)
(A)
'3OC CALL S I G E N GNO (A)
'4 OC CALL S I G E N H I (A)
'5 RELAY CONTACT NO (A)
&RELAY
CONTACT NC
'7RELAY
CONTACT
@-
RELAY CONTACT NC
(8)
CONTACT CON
SEN0 GNO
CALL SENO H I
.laOC C A L L
oc
CALL
OF 4 4 0 1
C A L L RECEIV
18)
(8)
XLR-3-39
P I N 1 (8) OF 4 3 0 2
XLR-3-33
PIN 2
I 8 1 OF 4 1 0 2
(8)
S I G E N GNO
SIG
(A)
(A)
(8)
& CALL
PIN 2
(A)
con
RELAY CONTACT NO
@RELAY
-3-31
EN HI
(81
(8)
FRONT PANEL
(REAR
+7.5V
SOURCE
-7.6V
SOURCE
-EN SOURCE
LAST USEO (THS
I
AS. C26. 031. OSi. F t . J4. P7. 02.
SHEET).
R41. U7. W3. 2 2
I
NOT USEO ( T H I S SHEET)
-
:
0 5 . 0 6 . J6
i
I
I
A
L A S T USEO:
CONTRACT NO.
R T S SYSTEMS
OPBW"
R.T.CChecNed
Burnenk.
celitonnis
SCHEMATIC OIAGRAM- SYSTEM TO SYSTEM
ADAPTER. NOOEL SSA324
-0
lasued
C24. OSI. 016. J2.02.
R43. U 7
SIZE
FSCN
160572
DATE W 3 / U
OWG NO
SD6926
1
T I 0 1 AND T201 ARE OPTIONAL
DO NOT INSTALL
nooooooo
-
n
000000000000
0 moooooooooooo
0
TI02 AND T202 ARE OPTIONAL
DO NOT INSTALL
T I 0 3 AND T203 ARE OPTIONAL
DO NOT INSTALL
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COMPONENT SIDE