Installation
62
025-9416
Table 9. RJ21 Radio Station Pin Configuration
Pin #
Label
Description
13
38
REC AUDIO HI
REC AUDIO LO
Receives audio (600 ohm balanced) input from radio station.
Transformer-coupled audio for talkback (2-way) paging applications.
14
DIG MODE
Output (RS-232 voltage level*) keys up transmitter in digital mode.
15
40
XMIT AUDIO HI
XMIT AUDIO LO
600 ohm balanced audio output to transmitter (tone, voice, modem).
16
COR / CAS
Input from radio station indicating channel busy. COR inhibits transmis-
sion until “clear.” Usually connected to radio COR or CAS output signal.
Can be used as analog clear to send (CTS) input from a transmitter link
controller. *
17
GROUND
Signal ground, used with signals 14, 39, 16, 41, 42, 21, 22, 46, 47.
Not
the same as chassis ground (pins #49, 50).
18
19
43
ANA PTT COM
ANA PTT NC
ANA PTT NO
Outputs (common, normally open, normally closed) indicate analog
paging audio is being sent to the transmitter. Can be used as analog
request to send (RTS) outputs to a transmitter link controller. †
20
44
45
DIG PTT COM
DIG PTT NC
DIG PTT NO
Outputs (common, normally open, normally closed) indicate digital paging
data is being sent to the transmitter. Can be used as digital request to
send (RTS) outputs to a transmitter link controller. †
21
22
46
47
ZONE ADR 8
ZONE ADR 2
ZONE ADR 4
ZONE ADR 1
Outputs indicate, along with XMIT REQUEST, whether the selected radio
RF paging zone is “clear” or “busy”. The zone address is coded in binary
bits 8 (2
3
), 4 (2
2
), 2 (2
1
), 1 (2
0
). (For example, 8=ON, 4=OFF, 2=OFF,
1=ON corresponds to zone #9 (1x2
3
+ 1x2
0
). Each signal requires a pull-
up resistor to 5 volts, able to sink 40 mA to signal ground to drive relays
or a transmitter link controller. Signal between 0 and 0.8 V is equivalent
to a logic 1 (ON).
23
24
48
AUX PTT NO
AUX PTT COM
AUX PTT NC
Auxiliary outputs (common, normally open, normally closed) activate after
XMIT REQUEST and before ANA or DIG PTT. Useful to busy out other
control equipment sharing the transmitter. †
39
XMIT REQUEST
Output requesting radio transmission. RS-232 voltage level compatible. *
41
BUSY
Input from other paging equipment sharing the transmitter. Inhibits the
Model 640 from keying PTT. Paging terminal stops transmitting at end of
paging batch if busy asserted. Can be used as digital clear to send (CTS)
input from a transmitter link controller. *
42
DIG DATA
Output carries binary digital paging data. RS-232 voltage level
compatible. *
49, 50
GROUND
Connected to protective chassis ground for cable shielding and RFI
protection.
Not the same as signal ground (pin #17).
Installation Interface Assembly
The optional installation interface assembly (Part No. 950-9334) provides two male, 12-pin,
Wiedmueller connectors for radio station interface (separate analog and digital). If the assembly
is being used for the RJ21 interface, it should have been installed already and connected to the
telco.
Summary of Contents for 640 DAPT XTRA
Page 2: ......
Page 6: ...Statements vi 025 9416...
Page 20: ...Introduction 8 025 9416...
Page 26: ...Specifications 14 025 9416...
Page 96: ...Installation 84 025 9416...
Page 126: ...Optional Equipment Installation 114 025 9416...
Page 134: ...Voice Prompts 122 025 9416...
Page 174: ...Parts Lists and Schematics 162 025 9416 Schematic...
Page 175: ...Parts Lists and Schematics 025 9416 163...
Page 176: ...Parts Lists and Schematics 164 025 9416...
Page 177: ...Parts Lists and Schematics 025 9416 165...
Page 178: ...Parts Lists and Schematics 166 025 9416...
Page 179: ...Parts Lists and Schematics 025 9416 167...
Page 180: ...Parts Lists and Schematics 168 025 9416...
Page 181: ...Parts Lists and Schematics 025 9416 169...
Page 182: ...Parts Lists and Schematics 170 025 9416 Silkscreen...
Page 185: ...Parts Lists and Schematics 025 9416 173 Schematic...
Page 186: ...Parts Lists and Schematics 174 025 9416...
Page 187: ...Parts Lists and Schematics 025 9416 175...
Page 188: ...Parts Lists and Schematics 176 025 9416...
Page 189: ...Parts Lists and Schematics 025 9416 177...
Page 190: ...Parts Lists and Schematics 178 025 9416 Silkscreen...
Page 193: ...Parts Lists and Schematics 025 9416 181 Schematic...
Page 194: ...Parts Lists and Schematics 182 025 9416...
Page 195: ...Parts Lists and Schematics 025 9416 183...
Page 196: ...Parts Lists and Schematics 184 025 9416 Silkscreen...
Page 198: ...Parts Lists and Schematics 186 025 9416 RAM Disk 702 9386B ROM Disk 702 9389B...
Page 199: ...Parts Lists and Schematics 025 9416 187 TNPP Interface 702 9362C 2...
Page 200: ...Parts Lists and Schematics 188 025 9416 Terminal Block Adapter 702 9470B...
Page 201: ...Parts Lists and Schematics 025 9416 189 CONFIGURATION DIAGRAMS Dual Trunk Telco DID 024 0076A...
Page 202: ...Parts Lists and Schematics 190 025 9416 Dual Trunk Telco End to End 024 0077A...
Page 203: ...Parts Lists and Schematics 025 9416 191 Dual Trunk Telco E M 024 0078A...
Page 204: ...Parts Lists and Schematics 192 025 9416 Dual Trunk Telco Ground Start 024 0079A...
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