Multitone RPR 583, Technical Manual

Page: 54 / 91

14 1
LOWBAT
N.C.
RXEN
CHGDET
7 7
FSTCHG
BEEP
PGM
N.C.
VDD (+3V)
GND
B+
DATA
1
8
14
8
GND
DECODER BOARD RADIO BOARD
PL401 SK1
N.C.
TAG11345-1
RPR 583
TM1212 Issue 1 Page 5 - 10
Fig. 5.4: Connections between Radio Board and Decoder Board
5.7.4 Battery-Low Circuit Test
To check the Battery-Low circuit:
a) Connect the variable DC power supply to the unit and set the output to
1.05 volts.
b) Switch ON the unit. The unit should go through the normal ‘start-up’ procedure
(beep and vibrate for one second and show the programmable switch-on
message for three seconds). After approximately two minutes the low battery
symbol will appear.
c) Switch OFF the unit. Set the output of the variable DC power supply to
1.2 volts.
d) Switch ON the unit. Make sure that the unit goes through the normal ‘start-up’
procedure.