User's Manual

3-22
3.14
USI/CONTROLLER CABLE CONNECTION TO LAPTOP (J301)
Recommended connectorized cable assembly – PN 695-7848-001 through 004 (24 AWG 6
pair shielded, jacketed cable with DEMM-9P connector on each end). See Figure 3-15 for
controller connector location and pinout. Refer to attached CD for mating cable pinout and
color code.
Figure 3-15 Controller USI Connector Location and Pinout
3.15
SERVICE CHANNEL
A service channel is defined as a non-revenue bearing channel provided as part of a trans-
mission system for operation, maintenance, monitoring, and control of the system. The
MDR-8000 provides a 256 kb/s auxiliary channel for servicing the radio. This is an over-
head channel and is independent of the traffic channels. The 256 kb/s service channel con-
tains four 64 kb/s service channels. Three of the four 64 kb/s channels (Service Channel 1,
2, and 3) can be provisioned on the USI for a specific use. Service channel 0 is dedicated to
radio commands and ELMC. Service channel 0 is not provisionable. The four channels are
multiplexed and shifted in and out of registers on the controller.
J315
J301
J313
J308 J309 J310 J312
J318
J305
J316 J317 J302
J307
J301
FRONT VIEW
USI
51
96
DTR
GND
TxD
RxD
DCD
RTS
DSR
CTS
RI
LMW-7059
02/04/03
J301