Codan Radio MT-4E Paging - Manual (Page 36)

USER GUIDE | MT-4E PAGING SYSTEMS
Chapter 3: MT-4E Paging System Components Page 28
System Regulator Testing
The System Regulator 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
Regulator as shown in Figure 3-20. Turn the rotary switch to the desired position to measure the supply
voltage, regulated voltage or audio output as shown in Table 3-1. Note that the RSSI requires a carrier
and the audio output requires an audio tone injected into the receiver.
Figure 3-20: System Regulator Testing
Table 3-1: System Regulator Rotary Switch Functions
Position Function Parameter
1 Supply Voltage +10 Vdc to +17 Vdc (+13.8 Vdc nominal)
2 +9.5 Volts Regulated +9.5 Vdc (± 0.1 Vdc)
3 Rx A Audio Receiver A Audio (NOT Rx Balanced Output)
4 Rx A Carrier Strength 0 Vdc to +5.0 Vdc based on received signal strength
(0 Vdc is a low RF signal level, +5.0 Vdc is high)
5 Rx B Audio Receiver B Audio (NOT Rx Balanced Output)
6 Rx B Carrier Strength 0 Vdc to +5.0 Vdc based on received signal strength
(0 Vdc is a low RF signal level, +5.0 Vdc is high)
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
RECEIVER
NORM
SQ. DISABLE
OFF
CNTL
BUS
A D
RF N I
REF
IN
USB
FREQUENCY (MHz)
MADE IN CANADA
MODEL # CODE
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
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
SET
DEV
4 LEVEL
SETUP
MODE
DATA
MODE
A D
2 LEVEL
SET MOD
NORM
REF IN
REF OUT
PAGING
MODULATOR
DATA
INT
FREQ REF
EXT DATA / CTRL PORT
PULL DOWN
TO REMOVE