46131-0598 <90-00018>
P
AGE
31
6.
Check the incoming signal level at the RCV test points on the APU
modem subassembly with a dB meter (bridging). The signal level
should be 0 to -40 dBm, depending on the setting of switch S1 on
the modem subassembly. There is no other adjustment for this
circuit.
OPERATION
SUBASSEMBLY INSTALLATION
T
he 46131 APU has four options:
1.
-00
32 discrete alarm inputs
8 serial (TBOS) alarm interrogator ports
8 control outputs
2 RS-232/422/485 responder ports
1 RS-232 configuration port
2.
-01
64 discrete alarm inputs
8 serial (TBOS alarm interrogator ports
16 control outputs
2 RS-232/422/485 responder ports
1 RS-232 configuration port
3.
-20
32 discrete alarm inputs
8 serial (TBOS) alarm interrogator ports
8 control outputs
2 RS-232/422/485 responder ports
1 202 modem responder port
1 RS-232 configuration port
4.
-21
64 discrete alarm inputs
8 serial (TBOS) alarm interrogator ports
16 control outputs
2 RS-232/422/485 responder ports
1 202 modem responder port
1 RS-232 configuration port
Upgrading
Upgrade the -00 and -20 options to 64 alarm inputs and 16
control outputs by ordering an Expansion Board subassembly.
Upgrade the -00 and -01 options to include a modem by ordering
a 202 Modem subassembly.
