MT-4E Analog and P25 Digital Radio Systems - Daniels Electronics
MT-4E Analog and P25 Digital Radio Systems - Daniels Electronics
MT-4E Analog and P25 Digital Radio Systems - Daniels Electronics
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
TEST PORT<br />
SCOPE<br />
100V MAX 100V MAX 100V MAX<br />
CH1<br />
CH2<br />
DVM<br />
MIC<br />
HELP<br />
RETURN<br />
AUDIO I/O<br />
MODE<br />
TAB<br />
SHIFT<br />
BKSP<br />
HOLD<br />
GHI<br />
4<br />
PQRS<br />
7<br />
*<br />
JKL<br />
5<br />
TUV<br />
8<br />
0<br />
MNO<br />
6<br />
WXYZ<br />
9<br />
ESC ENTER POWER<br />
#<br />
125 W MAX<br />
VOLUME<br />
SQUELCH<br />
AUDIO IN AUDIO OUT 1 AUDIO OUT 2<br />
FREQUENCY (MHz)<br />
SWITCH A SWITCH B<br />
REF A D<br />
15 3 15 3 IN<br />
13<br />
5<br />
NORM<br />
OFF<br />
11 7 11 7<br />
KEY TX<br />
9<br />
9<br />
MICMODE<br />
ANALOG<br />
DIGITAL<br />
TX A<br />
USB<br />
CI-RC-4L<br />
RX A<br />
CNTL<br />
BUS<br />
TX B<br />
RX B<br />
PULL DOWN<br />
TO REMOVE<br />
MIC<br />
MADE IN CANADA<br />
MODEL # CODE<br />
USB<br />
RF OUT<br />
CNTL<br />
BUS<br />
A<br />
D<br />
FREQUENCY (MHz)<br />
SQ. DISABLE<br />
NORM<br />
OFF<br />
REF<br />
IN<br />
MADE IN CANADA<br />
MODEL # CODE<br />
RF<br />
IN<br />
FUNCTION<br />
12<br />
1<br />
11<br />
2<br />
10<br />
3<br />
9<br />
4<br />
8<br />
5<br />
7 6<br />
+<br />
VOL METER<br />
-<br />
EXT<br />
SPKR<br />
MADE IN CANADA<br />
OFF<br />
58<br />
Chapter 6: Additional <strong>Radio</strong> System Tests<br />
RADIO SYSTEM TESTING THROUGH FILTERING<br />
EQUIPMENT<br />
The Transmitter RF power output <strong>and</strong> Receiver sensitivity tests can be performed by injecting <strong>and</strong><br />
measuring the RF signals through the fi ltering equipment. Connect the test set to the antenna port of<br />
the fi ltering equipment as shown in Figure 6-1. When testing through this equipment, the test results<br />
will be noticeably lower as the fi ltering equipment typically has 1 to 3 dB of insertion loss associated<br />
with it.<br />
Rx Balanced Audio Output<br />
(from pins B26 <strong>and</strong> Z26)<br />
ABC<br />
1 2<br />
3<br />
DEF<br />
+<br />
-<br />
.<br />
GEN T/R ANT<br />
Audio In<br />
REPEATER<br />
TRANSMITTER<br />
CONTROL<br />
RECEIVER<br />
ON<br />
OFF<br />
SPKR<br />
INT<br />
EXT<br />
SYSTEM REGULATOR<br />
POWER<br />
ON<br />
DANIELS<br />
ELECTRONICS LTD.<br />
DANIELS<br />
ELECTRONICS LTD.<br />
DANIELS<br />
ELECTRONICS LTD.<br />
RF OUT from Tx<br />
to Duplexer<br />
T/R port from IFR 2975 to<br />
Antenna port on Duplexer<br />
Duplexer to<br />
RF IN on Rx<br />
Figure 6-1: Transmitter <strong>and</strong> Receiver Testing Through Filtering Equipment<br />
Maintenance<br />
Guide<br />
MG-001 <strong>Daniels</strong> <strong>MT</strong>-<strong>4E</strong> <strong>Radio</strong> <strong>Systems</strong><br />
www.danelec.com
Change language