RTS 802, 802A Technical Data Manual
Technical Data Package
Models 802 and 802A
Master Station
9300-3510-00 Rev F 5/2006
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.
WARRANTY NOTICE
See the enclosed warranty card for further details.
CUSTOMER SUPPORT
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
Factory Service: 800-553-5992
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).
SHIPPING TO THE MANUFACTURER
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.
Factory Service Department
Telex Communications, Inc.
8601 East Cornhusker Hwy.
Lincoln, NE 68507 U.S.A.
Attn: Service
TABLE
of
CONTENTS
Chapter 1
Description, Operation, and Specifications ............................................................................................................5
Model 802 Description / Operation ........................................................................................................................5
Functional Components ..........................................................................................................................................6
Front Panel: Description and Operation .................................................................................................................7
Preset 1 through Preset 4 (6) ...................................................................................................................................8
Call Signal (7) .........................................................................................................................................................8
Panel Mic (8) ..........................................................................................................................................................8
Speaker ON (9) .......................................................................................................................................................8
Microphone ON (10) ..............................................................................................................................................8
Master Volume (11) ................................................................................................................................................8
AUXiliary Volume (12) ..........................................................................................................................................8
Carbon Microphone Headset Jack (13) ..................................................................................................................8
Dynamic Microphone Headset (14) ........................................................................................................................8
Adjustment Board: Description and Operation ......................................................................................................9
Listen Level ............................................................................................................................................................9
Balance Controls .....................................................................................................................................................9
Auxiliary Control, Sidetone Level, Chime Level, Squawk Level, Panel Mic Gain, and Headset Mic Gain .........9
Assignment Switches.............................................................................................................................................10
Reset and Status Lamps ........................................................................................................................................10
Programming Switches .........................................................................................................................................10
Rear Panel: Description and Operation ................................................................................................................10
Line Connector .....................................................................................................................................................10
Ancillary Connector ..............................................................................................................................................10
IFB, Squawk, and ISO Connectors .......................................................................................................................10
4-Wire Connector .................................................................................................................................................11
Optional Aux Connector .......................................................................................................................................11
Interfacing to Other Equipment ............................................................................................................................11
Specifications ........................................................................................................................................................12
Chapter 2
Installation ............................................................................................................................................................13
Mechanical Installation .........................................................................................................................................13
Electrical Installation ............................................................................................................................................13
Power ....................................................................................................................................................................13
Grounding .............................................................................................................................................................14
Signals - General ...................................................................................................................................................14
Signals - Features ..................................................................................................................................................19
Key Outputs ..........................................................................................................................................................19
Relay Output (See Figure 13) ...............................................................................................................................19
External Microphone Switch (See Figure 13) ......................................................................................................19
VCP Connector (See Figure 13) .......................................................................................................................... 21
External Headset Connector (See Figure 13) ....................................................................................................... 21
External Microphone Connector (See Figure 13) ................................................................................................ 21
Program Inputs (See Figure 13) ........................................................................................................................... 21
Microphone Output Connectors (See Figure 13) ................................................................................................. 21
External Speaker Output (See Figure 13) ............................................................................................................ 21
Headsets ............................................................................................................................................................... 21
Headset Requirements ......................................................................................................................................... 21
Headset Connections ............................................................................................................................................ 22
Model 802 to Model 801 / Model 860 ................................................................................................................. 23
Case 1: .................................................................................................................................................................. 23
Case 2: .................................................................................................................................................................. 23
Model 802 - Telephone ........................................................................................................................................ 25
Method 1: ............................................................................................................................................................. 25
Method 2: ............................................................................................................................................................. 26
Method 3: ............................................................................................................................................................. 26
Method 4: ............................................................................................................................................................. 26
Model 802 - Series 4000 IFB ............................................................................................................................... 28
Series 1000 Squawk ............................................................................................................................................. 33
Camera (Video) ISO ............................................................................................................................................ 36
Chapter 3
Programming the Model 802 ............................................................................................................................... 43
Introduction .......................................................................................................................................................... 43
Hardware Functions ............................................................................................................................................. 43
DIP Switches. ....................................................................................................................................................... 44
Set-Up Mode ........................................................................................................................................................ 44
PRESET Programming Function ......................................................................................................................... 44
RELAYS Programming Function ........................................................................................................................ 45
CALL LIGHTS Programming Function .............................................................................................................. 45
LATCH DISABLE Programming Function ........................................................................................................ 46
PRESET EXCLUDE Programming Function ..................................................................................................... 46
INSTANT MIC ON ASSIGN Programming Function ....................................................................................... 46
Appendix A
802 Update for Compatibility
with Models VCP-6A1 and VCP-12A ................................................................................................................. 47
NOTES ................................................................................................................................................................. 47
Appendix B
Model 802 Special Purpose Programming Mode Functions ............................................................................... 49
Special Purpose Programming Mode .................................................................................................................. 49
Button Lock ......................................................................................................................................................... 49
Instant Mic ........................................................................................................................................................... 49
Bilat Select ........................................................................................................................................................... 49
Total Mute ............................................................................................................................................................ 49
Chime Select ........................................................................................................................................................ 50
Auto Listen .......................................................................................................................................................... 50
Auto Talk ............................................................................................................................................................. 50
Ext. Contact ......................................................................................................................................................... 50
Talk Turns On Listen ........................................................................................................................................... 50
TABLE
of
CONTENTS
Talk Turns Off Listen ...........................................................................................................................................50
Appendix C
Addendum to Technical Data Package .................................................................................................................51
RS232 Language Implementation ........................................................................................................................ 51
Command Structure ..............................................................................................................................................52
Error Handling ......................................................................................................................................................52
Examples of Commands and Responses ..............................................................................................................53
Eavesdrop Mode ................................................................................................................................................... 53
802 Software Update ............................................................................................................................................ 54
Appendix D
Summary of 802 Software Versions .....................................................................................................................55
Version 4.7 ............................................................................................................................................................ 55
Version 4.6 ............................................................................................................................................................ 55
Version 4.5 ............................................................................................................................................................ 55
Version 4.4 ............................................................................................................................................................ 56
Version 4.3 ............................................................................................................................................................ 56
Version 4.2 ............................................................................................................................................................ 56
Version 4.1 ............................................................................................................................................................ 56
Appendix E
Documentation Summary Software ...................................................................................................................... 57
Version 4.6 ............................................................................................................................................................ 57
Mother Board DIP Switch Assignments ...............................................................................................................57
Adjustment Board DIP Switch Assignments ........................................................................................................57
Squawk Board DIP Switch Assignments .............................................................................................................57
Chime Choices ...................................................................................................................................................... 58
Version 4.7 ............................................................................................................................................................ 58
Mother Board DIP Assignments ........................................................................................................................... 58
Adjustment Board DIP Switch Assignments ........................................................................................................58
Squawk Board DIP Switch Assignments .............................................................................................................58
Chime Choices ...................................................................................................................................................... 58
Appendix F
Option Numbering System and
Ordering Sy0stem .................................................................................................................................................59
5
CHAPTER 1
Description, Operation, and Specifications
Model 802 Description / Operation
The Model 802 Master Station is a microprocessor-assisted communications control center. Each Master Station is a “stand
alone” unit, that can be used either singly or in multiples. A Master Station can connect to, access, and control a variety of
different communications systems, including RTS Systems:
1. “TW” intercom system
2. IFB System
3. Station isolate system
In addition, each Master Station functions as a multi-channel communications unit, used either:
• as a unit along a multi-unit conference bus or
• as a unit in multi-unit point-to-point matrix-style communications system or,
• as a combination of the above two bullets.
The Master Station Block Diagram, Figure 1, “Model 802 Block Diagram,” on page 6, shows the Master Station functional
components, input/output connections, and controls.
Description, Operation, and Specifications
6
Functional Components
• Two microphone preamplifiers each with a limiter
• A panel microphone/headset microphone select electronic switch
• A microphone ON/OFF electronic switch
• “Talk circuitry” consisting of:
Talk channel select electronic switches
FIGURE 1. Model 802 Block Diagram
7
Front Panel: Description and Operation
“Bilateral current source” line drivers
Listen balance controls
Individual listen level controls
Individual listen electronic switches
• A 16-source listen assign switch matrix
• A “master” listen volume control
• A two-channel (stereo) headphone amplifier
• A speaker ON/OFF electronic switch
• A speaker “dim” electronic switch
• A speaker amplifier
• An internal speaker disable switch
• A microprocessor control system, which includes:
Front panel button
Talk and listen electronic switch control outputs
Microphone and speaker electronic switch control outputs
Relay control outputs (6)
Key outputs (12)
Headset present sense input
User programmed memory with battery backup
Adjustment board programming input switches (8)
Mother board programming input switches (8)
Additional outputs to control some options
“Reset” switch (tells microprocessor to reconfigure, using adjustment and mother board programming inputs)
Factory installed “firmware” (operating system for microprocessor)
Front Panel: Description and Operation
The front panel contains 24 selector buttons (4), eight operation buttons (5), master (11) and auxiliary (12) volume controls,
loudspeaker (2), gooseneck microphone (3), dynamic (14) and carbon (13) microphone headset connectors, and access to the
adjustment board (1).
FIGURE 2. Model 802 Front Panel
Description, Operation, and Specifications
8
The selection (4) and operation (5) buttons have different functions when the Model 802 is switched from the standard,
“operating” mode to the “programming” mode. Legends under each button show its “programming” function. See
“Programming the Model 802” on page 43 for programming instructions.
In the basic Model 802, the first twelve selection buttons (4A) activate the talk circuits (top buttons), and listen circuits
(bottom buttons) of intercom channels 1 through 6. The remaining twelve selection buttons (4B) become operational with the
addition of options. Normally, the eight operation buttons (5) work as follows:
Preset 1 through Preset 4 (6)
Preset 1 through Preset 4 can be user programmed to activate, by the push of a single button, combinations of audio and
control circuits.
Call Signal (7)
The Call Signal button enables the signalling function, when the unit is equipped with this option.
Panel Mic (8)
The Panel Microphone enable button selects the front panel gooseneck microphone and deactivates the headset microphone; if
no headset is plugged in, Panel Microphone is automatically selected.
Speaker ON (9)
The Speaker ON button turns on the loudspeaker. Note, the headset listen circuit is always ON.
Microphone ON (10)
The Microphone ON button turns on the microphone in use (headset or panel).
Most of the front panel buttons feature a special momentary/latching dual-action: if a button is pressed quickly, the function
will “latch”, (turning “ON” if off, turning “off” if ON); if the button is head slightly longer, the action will be momentary and
the function will turn OFF when the button is released.
NOTE: This “latching” function can be disabled, “LATCH DISABLE Programming Function” on page 46.
Master Volume (11)
The Master Volume control sets the level of the sum of all audio sources going to the left and right side of the stereo
headphone and loudspeaker (exceptions: chime and squawk receive levels).
AUXiliary Volume (12)
The Auxiliary Volume control sets the level of the two auxiliary program audio inputs (and sends it to the Master Volume
control).
Carbon Microphone Headset Jack (13)
The Carbon Microphone Headset Jack accepts a standard 3-conductor 1/4” phone plug. The necessary DC excitation voltage
is provided to power carbon microphones or their electronic equivalent.
Dynamic Microphone Headset (14)
The Dynamic Microphone Headset connector accepts a stereo earphone, dynamic microphone headset.
9
Adjustment Board: Description and Operation
Adjustment Board: Description and Operation
The Adjustment Board is located to the left of the loudspeaker. Release the board by first pressing and releasing the small
rectangular panel (1) on the front panel illustration, and then pulling it forward.
Located on the board are sixteen individual listen level controls (A), fourteen 4-turn 2wire intercom balance controls (D),
seven auxiliary function controls (E), three groups of sixteen audio source assignment switches (B), eight programming
switches (C), the microprocessor reset button (F), and the status indicator lamps (G).
Listen Level
The Listen Level controls (A) 1--12 adjust the incoming levels of the twelve primary intercom channels. Compensate for level
differences by adjusting these controls.
Balance Controls
The Balance Controls (D) only function in the 2-wire intercom mode. Adjust the BALANCE control on each channel to null
your own microphone signal in the loudspeaker or headphones. Channel 13 LISTEN and BALANCE controls are reserved for
future use. LISTEN LEVEL controls 15 and 16 adjust the levels of the AUXILIARY PROGRAM inputs 1 and 2.
Auxiliary Control, Sidetone Level, Chime Level, Squawk Level, Panel Mic Gain, and Headset Mic Gain
In the Auxiliary Control section (E), the first control (E1) adjust the button illumination brightness, the second control (E2)
adjusts the loudspeaker level change when the microphone is switch ON. The Sidetone Level (E3) adjust the loudness of your
own microphone signal hear in your own headset. The Chime Level (E4) sets the volume of the incoming chime signal (when
the chime option is installed). The Squawk Level (E5) sets the volume of the incoming squawk signal (when squawk option is
installed). The Panel Mic Gain (E6), and Headset Mic Gain (E7) adjust the gain of the respective microphone preamplifier to
compensate for the differences in microphone levels or individual’s voices.
FIGURE 3. Model 802 Adjustment Board
Description, Operation, and Specifications
10
Assignment Switches
The Assignment Switches (B) assign the 16 primary audio sources in any combination to the left or right side of the stereo
headset or to the loudspeaker. These 16 sources are:
Intercom Channels: 1- 12
“ISO” Listen
Auxiliary Program 1
Auxiliary Program 2
Spare
Reset and Status Lamps
The Reset button (F) is used to reset the microprocessor. This is required when initially installing certain options or making
certain programming changes on the Mother Board. The Status Lamps (G) are used for diagnostic purposes.
Programming Switches
The Programming Switches (C) are used to set up various special operating modes. See Figure 36 on page 39for illustration.
Rear Panel: Description and Operation
The Model 802 is connected to other Model 802’s, other systems, and external equipment using the connections on the Rear
Panel.
The Line (2) connector, Ancillary (3) connector, and (8) screw terminal strips are present on the basic Model 802.
The optional IFB (4), Squawk (5), 4-wire (6), and ISO (7) connectors are installed only as a part of the various options.
The screw terminals, provide connections to the six sets of single-pole double-throw (SPDT=form C) relay contacts,
microphone ON/OFF remote control (momentary action only -- not alternate actions), Model VCP 6 or VCP 12 ISO Control
Station, external headset connector, external microphone input, auxiliary program inputs, microphone preamplifier output,
external loudspeaker, and power input.
Line Connector
The Line connector contains the balanced audio circuits and keying circuits for intercom channels 1-12, as well as connection
to Auxiliary Program Input 2. In normal 2-wire operation, each audio pair functions as a full-duplex two-way communication
circuit; while, i8n the 4-wire mode, the pairs function as the send portion of each circuit assigned to 4-wire operation.
Ancillary Connector
The Ancillary Connector connects to:
1. six sets of programmable relay contacts
2. the microphone ON/OFF remote control
3. the squawk receive input
4. two auxiliary program balanced inputs.
IFB, Squawk, and ISO Connectors
The IFB, Squawk, and ISO connectors are plug-in compatible with Model 4010 Central Electronics, Model SQJ1010 Central
Junction Interconnect, and Model VIE306 Station Isolate Electronics, respectively.
11
Interfacing to Other Equipment
4-Wire Connector
The 4-Wire connector contains channels 1-12, 4-wire receive circuits, channels 7-12, 4-wire talk (send) circuits and channels
7-12 keying circuits.
Optional Aux Connector
The optional Aux Connector directly accesses the microprocessor via an RS-232 bus, only as a part of custom software
applications.
Interfacing to Other Equipment
DIRECT: An 802 connects directly to external equipment via the line connector, the back panel terminals and the Ancillary
connector.
SYSTEM: The Model 862 System Interconnect provides direct connection of up to 12 channels of TW Intercom, as well as
audio inputs and output, and switching circuits. Signals interfaced via the 862 are common to all 812s in the system.
DIRECT with OPTIONS: An individual 802, equipped with standard options, can connect with Series 4000 IFB System or the
TW Intercom Station Isolate System.
Description, Operation, and Specifications
12
Specifications
Color:
Gray, Federal Stand 595A: Color #26492
Weight:
18 pounds (8.2 kilograms)
Dimensions
3.5 inches (89 millimeters) high x 19.0 inches (483 millimeters) wide x
14.3 inches (363 millimeters) deep (excluding connector/microphone
and adjustment board clearances.
Inputs
Dynamic Microphone
Source Impedance
50-1000 ohms
Level
-55 dBu nominal
Carbon Microphone
Level
-15 dBu
Excitation
10 to 16 milliamperes
Four-Wire Receive Level
-20 ±10 dBu into 10 kilohms, balanced/floating
Squawk Input Level
0 ±10 dBu into 20 kilohms, unbalanced
Program Input Level
0 ±10 dBu into 20 kilohms, balanced/floating
Power
16-20 volts ac rms at 3 amperes max.
18-26 volts dc at 2 amperes max.
Outputs
Headphone Level
8 volts pp into 25 ohms
Speaker Level
10 volts pp into 8 ohms
Mic Out Level “LINE”
0 dBu nom., source: 400 ohms, balanced, floating
Mic Out Level “MIC”
-54 dBu nom., source: 10 ohms, balanced, floating
Relay Contacts
1 amp, 24 volts dc maximum (6V pp/600ohms)
0.5 amp, 110 volts ac maximum
Bilateral Line
10 milliamperes pp max (2V pp/200 ohms)
Driver Outputs
3 milliamperes pp avg (2/3 V pp/200 ohms)
4-Wire Send (Current Source) Output Levels:
10 milliamperes pp max (6V pp/600 ohms)
3 milliamperes pp max (2 V pp/600 ohms))
Key Outputs (Open Collector):
0.5 amperes, 50 volts dc maximum
Model 56-16 Power Supply
Input
117 volts ac ±10% 50/60 Hz, 1.7 amps
243 volts ac ±10% 50/60 Hz 0.85 amps
Output
16 volts ac, 3.5 amps
13
CHAPTER 2
Installation
Mechanical Installation
The 802 Speaker Master Station is a rack (or console) mountable enclosure, 3.5 inches (89mm) high by 19.0 inches (483mm)
wide by 14.3 inches (363 mm) deep. The mounting holes are standard E.I.A. spacing. The panel microphone requires a
minimum of 5.0 inches (127mm front panel clearance, and the adjustment board requires 11 inches 279mm). Allow an
additional 2.0 inches (51 mm) for the rear panel connectors.
When installing this station, allow space for control access, cabling and servicing. Provide space for: cabling service loops,
connectors, and cables. If the headset connector is remotely located, allow space between this cable and interfering sources
such as TV monitors, power supplies and equipment with internal power supplies.
The Mode 56-16 power supply, when used, should be mounted at least 1 to 2 feet away from the Model 802 to minimize hum
pickup.
Electrical Installation
Power
The 802 receives electrical power from either (1) the Model 56-16 ac power supply (supplies 16 vac at 3 amps) or (2) a user
supplied system power supply. The power requirement for the Model 802 is 16-20 volts ac rms/e amperes or 16-28 volts dc 2
amperes. Input power (mains power) to the Model 56-16 is switch selected to either 120 vac ±10% or 230 vac ±10%, 50/60 Hz
±10%. Connect power to the Model 802 as shown in Figure 4 on page 14.
WARNING: For 230 volt operation, change fuse F1, on the Model 56-16, to a 0.375 amps slow-blow 3AG type. For metric
style fuses, use part #2802-0006-00 (metric fuse adapter).
NOTE: Always connect the green safety wire from earth or safety ground to the chassis of the Model 802 (TB16-3).
Installation
14
Grounding
The Master Station chassis should be connected to earth ground or power line safety ground. Each Master Station is bypassed
to its own chassis via a 0.1 microfarad capacitor and 22 kilohm resistor in parallel to prevent interference from radio stations.
Signals - General
Model 802 system configuration are:
1. All Model 802 Master Stations
2. Model 802 Master Stations & Model 862 System Interconnect
3. Model 802 Master Stations plus TW Intercom System
In the “All Master Stations Configuration” (Figure 5 on page 15), interconnect the stations using Model 4025 splitter
assemblies. Connect the Model 802 LINE connectors (J101) to the Model 4025 splitter assembly as show in Figure 5 on
page 15. Terminate the system by connecting terminator plug of Figure 6 on page 15 to Model 4025.
In the “Master Stations and Model 862 Configuration” (Figure 7 on page 15), interconnect the stations using either the
multiple connectors on the rear of the Model 862, Model 4025 splitter assemblies or a combination of both. Terminate the
system by connecting terminator plugs (Figure 8 on page 16) to jacks J5 to J8 of the Model 862. Two terminators are required
for a 6-channel system. Four terminators are required for a 12-channel system. On a 6-channel system, install terminator plugs
in Model 862 “CH 1-2-3” (J5) and “CH 4-5-6” (J6) connectors. On a 12-channel system install terminator plugs in Model 862
“CH 1-2-3” (J5), “CH 4-5-6” (J6), “CH 7-8-9” (J7), and “CH 10-11-12” (J8).
To mechanically secure the cable to the Model 802 rear panel, do the following:
1. Remove the screw just to the left of J101.
2. Plug the cable into J101.
3. Secure the cable connector by screwing the captive screw in the connector into the hole left in step (1), above.
4. Use a cable tie to secure the other side of the connector, using the cable tie loop on the rear panel of the Model 802.
CAUTION: Using one screw only (and omitting the cable tie) to secure the cable connector may damage the rear panel
connector.
FIGURE 4. Model 802 Power Supply Connections
15
Electrical Installation
FIGURE 5. All Master Station System
FIGURE 6. Terminat o r Plug
FIGURE 7. Master Station System with Model 862
Installation
16
The “Master Station plus TW Intercom System Configuration” includes one or more 802s, a Model 862 System Interconnect,
and a TW Intercom System (Figure 10 on page 17). In this system, the master stations talk and listen between themselves and
the TW user stations. The call light (optional) signals are also sent throughout the system.
This method allows an unrestricted channel assignment switching system to be used on the TW Intercom System. The TW
portion of the system, (Figure 10 on page 17), consists of four Model PS31 (or PS-30) power supply systems and Model BP300 user stations. To interface the TW Intercom System to the Model 802 Master Station System, connect PS-31 (PS-30) #1
output 1-2-3 to 862 input “CH 1-2-3” (J5). Connect PS-31 (PS-30) #2 output 1-2-3 to 862 input “CH 4-5-6” (J6). If a 12channel master station system is being interfaced, connect PS-31 (PS-30) #3 output 1-2-3 to 862 input “CH7-8-9” (J7 and PS31 (PS-30) #4 output 1-2-3 to 862 input “CH 10-11-12” (J8)
Not all channels need to be connected between the 862 and the PS-31s (PS-30s). For example, to convert channel 12 on the
master stations to be private channel for communications between 802s only, do not connect pin 3 of the 862s 10-11-12 input
connector but terminate instead with a resistor as show in Figure 9 on page 17. This procedure may be used to isolate any one
channel or combination of channels. Note, any channel not connected to an external TW channel must be terminated with a
200 ohm resistor and 10 microfarad capacitor as show in Figure 8 and Figure 9. Connect output from the 802s line connector
(J101) to the line inputs on the 862.
To mechanically secure the cable to the Model 802 rear panel, do the following:
1. Remove the screw just to the left of J101.
2. Plug the cable into J101.
3. Secure the cable connector by screwing the captive screw in the connector into the hole left in step (1), above.
FIGURE 8. Terminator Plug for Model 862
17
Electrical Installation
4. Use a cable tie to secure the other side of the connector, using the cable tie loop on the rear panel of the Model 802.
FIGURE 9. Channel 12 Termination
FIGURE 10. Model 802/TW Intercom System Bloc Diagram
Installation
18
Some block diagrams in this manual use codes contained in Table 1, Connector Code Table. Note, in this table, only chassismount connectors are specified. All male connectors are colored black.
TABLE 1. Connector Code Table
CODE PART NO. CONNECTOR DESCRIPTION
A XLR-3-31 Audio, chassis mt., Female, 3-pin
B XLR-3-32 Audio, chassis mt., Male, 3-pin
C XLR-4-31 Audio, chassis mt., Female, 4-pin
D XLR-4-32 Audio, chassis mt., Male, 4-pin
E Microribbon Type, chassis mt., Male, 50-pin
F Microribbon Type, chassis mt., Female, 50-pin
G “D” Type, chassis mt., Male 25-Pin
H “D” Type, chassis mt., Female 25-Pin
J 456 “C” Type, chassis mt., Male 6-Pin
K 453 “C” Type, chassis mt., Male 4-Pin
L 5-way binding pose, dual assembly
M XLR-5-31 Audio, chassis mt., Female, 5-pin
N XLR-5-32 Audio, chassis mt., Male, 5-pin
P 452 “C” Type, chassis mt., Male, 3-pin
Q D6F Audio, chassis mt., Female, 6-pin
R D6M Audio, chassis mt., Male, 6-pin
S R05-R5M BNC Type, chassis mt., Male, 6-pin
T “D” Type, chassis mt., Female, 9-pin
U Terminal, Bare Wire (Weidmuller)
V Screw terminal, barrier strip
W Phone Jack, 2-circuit, shorting & non-shorting
X Phone Jack, 3-circuit, shorting & non-shorting
Y Phono Jack,
AA Mini-Jack, Female
FIGURE 11. Darlington Key Output
19
Electrical Installation
Signals - Features
Key Outputs
Twelve logic-type outputs are available at the rear-panel line connector, J101. These outputs control relays in the Model 862
System Interconnect, but if your system does not include a Model 862, these output may be used directly as control outputs.
Press one of twelve talk buttons on the front panel of the Model 802 activates one of the twelve key outputs (respectively).
Connections to these output are shown on sheet 20 of the Model 802 schematic. Figure 11 on page 18 show a typical output.
The darlington transistor output conducts to ground, when activated, and has a maximum rating of 50 volts, 50 milliamperes,
dc. Figure 12 shows an application of the key output.
NOTE: Relays should always have a diode to protect the transistor in the Model 802.
Relay Output (See Figure 13)
Six form C relay contacts are available on the Model 802 rear panel. The respective relays are programmable from the front
panel to operate with front panel pushbutton(s) (See “Programming the Model 802” on page 43). Maximum contact ratings
are: 1 amp at 24 volts dc, or 0.5 amp at 110 vo.lts ac.
NOTE: Applying voltages over 32 volts is not recommended. Relay programming is discussed in “RELAYS Programming
Function” on page 45.
External Microphone Switch (See Figure 13)
Connect an external or remote microphone switch to TB7 (using labels above TB7 for exact connection). When the switch is
closed the microphone will turn ON and will be indicated by the front-panel MIC ON switch being brightened. The remote
switch is not alternate action and requires a maintained contact. When the remote switch is OFF, the microphone may be turn
ON locally, but when the remote switch is ON, the microphone may NOT be turned OFF locally.
FIGURE 12. Key Output Application
Installation
20
FIGURE 13. Model 802 Rear Panel Connections
21
Electrical Installation
VCP Connector (See Figure 13)
The rear-panel terminal block, TB8, has connections to interface to a “video-iso” system, and a “squawk” system.
External Headset Connector (See Figure 13)
Connect external headphones to TB9. Make sure that the external headphones connections are separate from any microphone
connections, or oscillations will occur. TB9 is paralleled with the front-panel headset connector; use only one at a time.
External Microphone Connector (See
Figure 13)
An external microphone may be used in place of the front-panel gooseneck microphone by connecting the external
microphone to rear-panel terminal block TB10. When using an external microphone, disconnect the front panel microphone by
unplugging connector, P1, from the motherboard.
Electret microphone may also be used with the Mode 802. Both 2-wire and 3-wire microphones are accommodated. To use a
2-wire electret microphone, install resistor R3 on the motherboard.
Program Inputs (See Figure 13)
Connect external program input to rear panel terminal block TB11 and TB12. These inputs accept line level balanced audio.
Program volume level is controlled by front panel AUX VOLUME control, adjustment board pots 15 and 16, and front panel
MASTER VOLUME control. Program may be assigned to left headphone, right headphone, or speaker by switches on the
adjustment board. Alternatively, program #2 audio may be injected at the Model 862 System Interconnect to all master
stations, or audio appearing at Program input #2 of any Model 802 will appear on all Model 802s.
Microphone Output Connectors (See Figure 13)
Two microphone outputs are provided via rear panel terminal blocks TB13 and TB14. A rear panel LEVEL switch selects low
level (MIC) or high level (LINE) output A separate MODE switch for each output determines whether an output is controlled
by the MIC ON/OFF switch.
External Speaker Output (See Figure 13)
Connect an external speaker to rear panel terminal block TB15. Since this output is a bridging type output, DO NOT LET
EITHER SPEAKER LEAD CONTACT GROUND. The switch next to TB15 turns OFF the internal speaker.
Headsets
Headset Requirements
A wide range of headset type may be used:
Use headphones with an impedance pf 25 ohms or greater. Low impedance 8 ohm headphones are not recommended.
Headphones with good acoustic isolation (20 to 40 dB) improve communication in high ambient noise environments, and
allow the user to use the headphones at a less tiring, lower volume.
In the headset connecting cable, prevent coupling between the microphone and headphone leads by using a shielded, twisted
pair for the microphone, and a separate, twisted pair for the headphones. Do not allow headphone ground to contact
microphone ground or shield. Tie the shield to microphone ground or “mic low”. The headset cable can be made longer when
the microphone and headphone pairs are physically separated. The wider the separation, the long the cable length which may
be used. Estimated maximum usable headphone cable lengths are as follows:
Dynamic Microphone Headset Type: Carbon Microphone Headset Type:
50 to 1000 ohm microphone
25 to 1000 ohm headphone(s)
Standard carbon microphone
25 to 1000 ohm headphone(s)
Installation
22
Single cable, two shielded twisted pair: 10 feet (3.05 m).
Dual ribbed cable, two shielded twisted pair: 30 feet (9.14 m).
Separate cables, shielded twisted pair in each: 50 feet (15.24 m).
Balanced microphone input: up to 100 feet (30.48 m).
Headset Connections
Dynamic Microphone Headset Connector:
XLR-5-31 type receptacle
Input Level:
-55 dBV
Output Level to headphone:
10 volts peak-to-peak open circuit
Pin 1 Microphone low
Pin 2 Microphone high
Pin 3 Headphone low
Pin 4 Left Headphone high
Pin 5 Right Headphone high
Carbon Microphone Headset Connector
Standard 1/4” Tip-Ring-Sleeve (TRS) Phone Jack
Input Level
-15 dBV nominal
Output to Headphone
10 volts peak-to-peak open circuit
Tip Carbon Microphone
Ring Headphone
Sleeve Common/ground
23
Electrical Installation
Model 802 to Model 801 / Model 860
If the Model 802 has been equipped with an “801 emulate” option, a connector on the rear panel of the Model 802 plugs
directly into an “801” type system.
If it is required that a non-801 emulate type 802 be used in an “801” type system, follow the directions below:
Case 1:
Six channels of intercom, no SAs, no IFBs, no Slate, no Monitor Mute: use a standard six channel Model 802 to connect to a
six channel “801” system. A wiring diagram for connecting a 6-channel Model 802 to an 801 system is shown in Figure 14.
Install button legends per Figure 15 on page 24.
Case 2:
Six channels of intercom, SAs, IFBs, Slate, Monitor Mute: Use a 12-channel Model 802 (equipped with the Talk option) and
connect using the wiring diagram in Figure 16 on page 24. Install button legends per Figure 17 on page 25. This wiring will
operate all relays in the 860. In a 12-channel 802, program one of the relays to activate when SLATE MIC is pressed. This
relay is equivalent to the slate-mic/radio-telephone relay available on J2 of the Model 801
Program another relay to activate when SPKR MUTE is pressed. This relay is equivalent to the monitor mute relay contacts
available at J4 on an 801. This relay may also be programmed to activate when an SA button is pressed. Thus if SA1 is used as
a studio announce, the studio speaker nearest the 802 may be muted via the relay when its SA1 button is pressed. This will
prevent feedback squeals.
Model 801s may also be used in an 802/862 system. Make connection between the systems as shown in Figure 18 on page 25.
Be sure that termination is provided by only one system. Note, some connections are optional. The standard connections allow
the six talk and listen channels of the 801 to communicate with the first six talk and listen channels of the 802. The optional
connections interface the next five channels of the 801 to channels 7-11 of the 802. SA and IFB channels on the 801 can only
talk and can not listen. SLATE is a 2-way line and will work to both talk and listen. Listen level on the SLATE line is
controlled by the EXT. 2 level knob. The key connections allow the 801 to operate relays 7-11 in the 862.
For more information on 801/860 systems, see the 801 technical manual TM2604.
FIGURE 14. Case 1: Six channel 802 to six channel 801 interconnection.
Installation
24
FIGURE 15. Case 1: Front Panel Button Legend
FIGURE 16. Case 2: 12-channel 802 to 6-channel 801 Interconnections
25
Electrical Installation
Model 802 - Telephone
The Model 802 may be interfaced to telephone lines as follows:
Method 1:
Connect a party-line (PL) channel from either one 802 or from an 862 to either a dry or wet phone line via a step-up
transformer as shown in Figure 19 on page 26. Terminate the phone line with an 820 ohm resistor across the transformer
FIGURE 17. Case 2: Front Panel Button Legend
FIGURE 18. Using a Model 801 in a Model 802 System
Installation
26
secondary (phone line side). The transformer is large enough so that it can be directly connected across a “wet” line (line with
dc current) with negligible ac performance degradation; the secondary is low enough resistance so that it will “hold” the line.
Method 2:
Connect a TWI-222T-telco interface unit as in Figure 20 on page 27.
Method 3:
Connect a TWI-326 interface unit usingFigure 21 on page 27.
NOTE: The 200 ohm resistor termination is not required if a PS-31 (PS-30/60) is also connected.
Method 4:
Connect a Model 802 with 4-wire option (OPT802-C2, or OPT803-C3) to a TWI-326 as shown in Figure 22 on page 28. This
method will work better than the two methods above.
NOTE: Termination must be provided.
FIGURE 19. Method 1: Model 802 to Telephone Interconnection
27
Electrical Installation
FIGURE 20. Method 2: 802 to Telephone Interconnection
FIGURE 21. Method 3: Model 802 to Telephone Interconnection
Installation
28
Model 802 - Series 4000 IFB
The Model 802 may be used in either of two ways with the 4000 series IFB system. Method “A” uses a line level, unswitched
microphone output from the Model 802 to drive Models 4001, 4002, or 4003 IFB Control Stations. Method “B” emulates
either a Model 4001 or 4002 IFB control station and requires no external parts, but it does require: 1) the installation of one or
two IFB option boards, 2) that mother board programming switch(es) be actuated and 3) a microprocessor reset be executed.
To use Method “A”, connect the Model 802 (rear panel) MIC OUTPUT 1 or MIC OUTPUT 2 to Models 4001, 4002, 4003
IFB Control Stations. Use the instructions for the “Line-level inputs” in the IFB Technical Manual, TM2594. Note, on the
4000 series control station, R11 must be removed and a trace cut. Interconnect the IFB system and configure the 4001, 4002,
or 4003 for power input and priority as described in the IFB Technical Manual TM2594 and Figure 23 and Figure 24. Move
the 802’s LEVEL switch to UNSW. Do not connect the shield at the 802 end of the cable.
Method “B” IFB (See Figures 25, 26, 27, and 28) requires both an option base (OPT802-A1) and IFB option(s). To emulate
a model 4001 IFB control station option OPT802-G1 must be installed. To emulate a model 4002 IFB control station, both the
OPT802-G1 and OPT802-G5 options must be installed. Note, if both IFB options are installed the “Iso” option cannot be
installed. If the IFB priority need to be changed, consult the IFB Technical Manual TM2594.
FIGURE 22. Method 4: Model 802 to Telephone Interconnection
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