P
AGE
34
46131-0598 <90-00018>
15.
On the back of the APU place the sticker with the new option num-
ber over the existing sticker. The options are defined as follows:
A15-46131-01
APU with A12-46130
Expansion Board subassembly
A15-46131-20
APU with A12-49030-00
202 Modem subassembly
A15-46131-21
APU with A12-46130-00
Expansion Board subassembly and
A12-49030-00 202 Modem subassembly
16.
Expansion Board Subassembly -
♦
Refer to Table F and Figs. 6 and 7 in the Installation chap-
ter for wiring alarm inputs 33-64.
♦
Refer to Table G and Fig. 6 for wiring control outputs 9-16.
♦
Close the plastic front cover. Installation is complete.
202 Modem Subassembly -
Refer to Table H and Fig. 6 in the Installation chapter for
wiring the 202 modem transmit and receive lines.
17.
202 Modem Checkout -
♦
Make sure the modem is connected to another modem at the
other end of the communications line.
♦
Apply power to the APU and the modem at the distant end.
♦
Place the front panel TEST (test) switch on the APU modem
subassembly in the on (down) position. Verify that the front
panel CD (Carrier Detect) LED at the distant end indicates
data transmission activity.
♦
With a dB meter (bridging), check the signal level at the
XMT test points on the APU modem subassembly. Adjust the
XMT LVL to obtain the level required for the application.
♦
Place the front panel TST (test) switch in the off (up) posi-
tion.
♦
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.
18.
Close the plastic front cover. Installation is complete.
SUBASSEMBLY INSTALLATION
