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1.13 REPEATER OPERATION
1.13.1 MAIN PROCESSOR CARD (MPC)
Refer to Figure 1-2.
•
Programming Jack
J1 provides input connection from the computer
and the "flash memory" in the MPC. The program-
ming information in an IBM PC programs the MPC
directly from the serial card through an interconnect
cable to the COM1 or COM2 port.
•
Reset
S1 provides a manual reset of the Main Processor
Card (MPC). A manual reset causes a complete
power-up restart.
•
Display and LEDs
Each combination of DS1 display read-out and
CR4/CR3 indication refers to an active alarm. See
Table 1-2 for alarms and definitions. LED indications:
S1
DS1
J103
CR1
GRN
CR2
YEL
YEL
CR5
J100
CR4
RED
RED
CR3
J1
PROG
JACK
RESET
MIC
SPKR
MPC
MAC
GND
A D
LEVEL
J500
J501
LOCAL
J502
ON/OFF/VOL
R236
J102
J101
J104
EXT SPKR
IAC
Figure 1-2 REPEATER CARDS
INTRODUCTION AND OPERATION
CR1 blinking; MPC is operational, CR2 on; high
power, off is low power and CR5 on; indicates an LTR
Repeater.
1.13.2 TEST MODE
When the Repeater is in Test mode the safety
measures are disabled. Therefore, if the Repeater is
keyed for an extended period and the power amplifier
temperature increase, thermal shutdown will not occur.
There are pop-up windows that appear in the Test
mode screens to alert the user that there is an alarm
and action should be taken.
RF Thermal Sense Alarm Condition Exists
NOTE: Safety measures are disabled
Figure 1-1 ALARM IN TEST MODE
+15V
+15V ACC
-5V
+5V
CWID
HANG
SWITCH
MOBILE
XMIT
TP
GND
+15V
S508
PA
1-5
Ok
RF INTERFACE
BOARD
EXCITER/RECEIVER
March 1999
Part No. 001-2009-600
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