Codan Radio MT-4E Analog and P25 Digital - Maintenance Guide - Manual (Page 53)

MT-4E ANALOG & P25 DIGITAL RADIO SYSTEMS | MAINTENANCE GUIDE
Chapter 5: Codan Radio System Testing Page 45
Transmitter Digital Testing
Connect the IFR 2975 and Codan Radio as shown in Figure 5-31.
Figure 5-31: Transmitter Digital Testing
On the IFR 2975, recall Codan setup 8 (Tx_Dig) from your internal drive. Enter the correct RF frequency
on the IFR 2975, set the MIC MODE switch on the front panel of the transmitter to Digital and fl ip the
other switch to KEY TX (or set the switch to NORM and key the transmitter through the RSS).
TRANSMITTER
CNTL
BUS
MIC RF OUT
A D
ANALOG
DIGITAL
NORM
OFF
KEY TX
MIC MODE
REF IN
USB
FREQUENCY (MHz)
MADE IN CANADA MODEL # CODE
Tx Balanced Audio Input
(to pins B18 and Z18)
Computer running RSS
USB from
Computer to Tx
Tx RF OUT to T/R port on IFR 2975
HELP MODE
TAB
SHIFT
+
-
.
BKSP
HOLD
RETURN
ESC ENTER POWER
1 2 ABC 3 DEF
JKL MNO GHI 6 5 4
TUV WXYZ PQRS 9 8 7
# 0 *
VOLUME
SQUELCH
GEN T/R ANT
125 W MAX MIC AUDIO I/O DVM CH2 CH1 SCOPE TEST PORT
100V MAX 100V MAX 100V MAX
AUDIO IN AUDIO OUT 1 AUDIO OUT 2
Audio
Out 1
VOL
SYSTEM REGULATOR
METER
+
-
MADE IN CANADA
ON
OFF
SPKR INT EXT EXT
SPKR
OFF
POWER ON
2
1
5
4
3
6 7 8
11
10
9
FUNCTION 12