System Power Connections; Telephony Connections - Motorola McIAS 1610 Series System Manual

2.4

System Power Connections

Connect the -48 volt battery (-48V BAT) system power and -48 volt return (-48V
RET) to the screw terminals located in the upper left section of the exterior backplane
as illustrated below. Make certain that the -48 vdc power service will accommodate
3A requirements. Service wiring should be at least 18 AWG.
Note: A McIAS 1610 unit with one or more analog boards installed requires
connection to battery and ground also. Frame ground, -48 volt return and
signal ground are isolated from McIAS logic ground. (Do not change any
jumpers on the Power Supply board.) A separate connection for signal battery
and signal ground is provided via screw terminals. This separate connection
completely isolates signal battery and signal ground from unfiltered frame
battery and ground. If filtered battery is to supply power to both inputs, run a
jumper from -48V BAT to signal battery and from -48V RET to signal ground.
Screw terminals appear on the backplane as follows:
2.5

Telephony Connections

Refer to the McIAS Telephony Interface Boards and Trunk Connections Manual for
instructions on the process of connecting the telephony interface boards to the telco
trunks.
FRAME GND
SIG GND
-48V RET
12
SIG BAT
-48V BAT