PERFORMANCE VERIFICATION
PROCEDURE
4-21
5.
Supply
current
«•»
All models
This lest checks the total suppl/ current
(ScopeMeter supply curr^ and the bulH-in battery charger current).
Test equipment:
Philips
PE 1537 Power Supply 0-40V/0-1A
Digital Multimeter
(Philips PM 2525 or equivalent)
5 mm Power Jack connector
plug with attached cable (for example order 4822 321 20125).
Test set-up:
PHILIPS PU2S2S
ScopeMeter
Settings/procedure/requ irements:
NOTE: A PM
9086
bstl^ry
pack (inctudad in tha shipment) has to be installed for this test
Only NiCad batteries
can be charged b/ the Scr^eMeter!
A Set the power supply
to 1 5V DC.
B Check that
the
charging
current Is 200 mA (typical reading on multimeter).
C Switch on the ScopeMeter.
D Check that the total supply current is 330 mA (typical reading on multimeter).
6. Battery backup functional test
•••
All
models
This test verifies
that the ScopeMeter settings will be kept In memory If power Is switched off while
the batteries
are installed.
Test equipment:
none
Test setup:
no specific test setup required
Settings/procedure:
A Switch on the ScopeMeter and
press the SCOPE key to get into scope mode.
B Press the AUTO SET
key and set channel A and B to 500 mV/div. Set the timebase to
1 ms/div.
C Switch off the ScopeMeter
with the ON/OFF key and keep it switched off for
one hour to enable
all capacitors
to discharge.
D
Press
the ON/OFF key to switch on the ScopeMeter again,
and verify that the settings for the
timebase and attenuator have not changed.
Requirements:
ScopeMeter settings
at power
off
must be restored the next time power Is switched
on.
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