Codan Radio MT-4E Analog and P25 Digital - Maintenance Guide - Manual (Page 38)

MAINTENANCE GUIDE | MT-4E ANALOG & P25 DIGITAL RADIO SYSTEMS
Chapter 5: Codan Radio System Testing Page 30
Receiver Bit Error Rate Testing
Connect the IFR 2975 and Codan Radio as shown in Figure 5-12.
Figure 5-12: Receiver Bit Error Rate Testing
On the IFR 2975, recall Codan setup 3 (Rx_BER) from your internal drive. Enter the correct RF
frequency, and ensure that the MOD TYPE is set to P25 and it is set for the STD 1011 test pattern (the
1011 test pattern will not operate correctly for this test) as shown in Figure 5-13.
Figure 5-13: Receiver Bit Error Rate Test Injection
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
RECEIVER
NORM
SQ. DISABLE
OFF
CNTL
BUS
A D
RF N I
REF
IN
USB
FREQUENCY (MHz)
MADE IN CANADA MODEL # CODE
Computer running RSS
USB from
Computer to Rx
T/R port from IFR 2975 to RF IN on Rx
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