Codan Radio MT-4R - Manual (Page 52)

UG-001 Daniels MT-4R and MT-4D Radio Systems
www.danelec.com
Chapter 6: Radio System Components 44
User
Guide
System Monitor Testing
The System Monitor module is designed with a convenient and easy test point built in to the front panel.
This test point allows a technician access to the DC supply and regulated voltages. Simply connect
a standard Digital Volt Meter (DVM) to the METER jacks on the front panel of the System Monitor as
shown in Figure 6-7. Turn the rotary switch to the desired position to measure the supply voltage,
regulated voltage or audio output as shown in Table 6-2. Note that the audio output requires a carrier
and audio tone injected into the receiver.
Figure 6-7: System Monitor Testing
Table 6-2: System Monitor Rotary Switch Functions
Position Function Parameter
2 Supply Voltage +10 Vdc to +17 Vdc (+13.8 Vdc nominal)
3 +9.5 Volts Regulated +9.5 Vdc (± 0.1 Vdc)
8 Rx A / B Audio Receiver Audio (NOT Rx Balanced Output)
MIN MAX HOLD REL
% ms Hz RANGE
dB
dB
ac+dc
ac+dc
ac+dc
ac+dc
F
nS
mA
mA A
mV
V
mV
V
OFF
C
A
A
A
A mA COM V
TEMPERATURE
A
MIN MAX HOLD REL
% ms Hz RANGE
dB
dB
ac+dc
ac+dc
ac+dc
ac+dc
F
nS
mA
mA A
mV
V
mV
V
OFF
C
A
A
A
A mA COM V
TEMPERATURE
A
AutoHOLD LOGGING
SAVE CANCEL
FAST MN MX
SETUP
YES
NO
DIGITAL MULTIMETER
CLEAR MEM
VIEW
DC
VOL
AUDIO A
B
2
1
5
4
3
6 7
8
11
10
9
SYSTEM MONITOR
FUNCTION
METER
+ -
PTT
12
MADE IN CANADA
DANIELS
ELECTRONICS LTD.
FREQUENCY (MHz)
xxx.xxxx
MADE IN CANADA
P25 RECEIVER
NORM
SQ . DI SA B L E
OFF
CNTL
BUS
A
B
A D
RF N I
MADE IN CANADA Model # Code
MADE IN CANADA
DANIELS
ELECTRONICS LTD.
P25 TRANSMITTER
MADE IN CANADA Model # Code
xxx.xxxx
CNTL
BUS
A
B
MIC RF OUT
A D
ANALOG
DIGITAL
OFF
KEY TX
NORM
MICMODE
FREQUENCY (MHz)
MADE IN CANADA
DANIELS
ELECTRONICS LTD.
REPEATER
CONTROL
RX B
TX B
RX A
TX A
CI-RC-4L PULL DOWN
TO REMOVE