Racal Instruments 9916 - Battery Economy Check; Segment, Decimal Point and Self Check

Battery A
Ba ttery B
Tri ckre charge
Full charge
Trickle charge
Full charge
Current
85rn'\
630rrA
Current
6mA.
60rrA
Voltage across R128
0.33'1
2.46'1
Voltage across R138
0.23'1
2.3'1
Battery Economy Check
5.13 This check can be carried out without the battery pack fitted. Set the UUT controls
as follows:
(1) Power source selector on the rear pane! to LINE POWER
(2) OPERATE/STANDBY switch to STANDBY
(3) POWER switch to ON. After approximately a minute the display should
blank out and the OVERFLOW/STANDBY indicator should light.
5.14 Press and release the RESET button. The display should indi cote all zeros and the
OVERFLOW/STANDBY indicator should be extinguished. After approximately one
minute the display should again blank out and the OVERFLOW/STANDBY indicator should
light.
PERFORWv"\ NeE TESTS AN D CA liBRA T ION
NOTE: The procedures detailed in the following paragraphs may be carried out
using line or battery supplies (provided the battery pack option is fitted).
If battery suppl ies are to be used for performance testing it is desirable
thot the batteries be in the fully charged condition at the commencement
of testing. No test result obtained when the Battery Low indicator is lit
should be considered valid.
Segment, Decimal Point and Self Check
5.15 (1)
Set the POWER switch to ON.
t;
(2) Set the NORfvIA VBURST/CHECK switch to CHECK.
(3) Se led INPUT lA I.
(4) Set the OPERATE/STANDBY switch to OPERA TE.I
5-6
9916 Vol.2