51-0191-0100 EP04-06 MPA4-80R Anglès.doc 3 of 4
DC OUT VERIFICATION (please proceed without loaded outputs)
1. Select a 10Hz 0dB sine wave output on the signal generator.
2. Check that the yellow DC-indicating LED lights up, together with the green S.P. LED's.
3. Select a 25Hz 0dB sine wave output on the signal generator.
4. Check that the yellow DC-indicating LED turns off.
REMOTE CONTROL VERIFICATION
1-
Release all of the input circuit selection switches.
↑
.
2-
Attenuation potentiometers should all be turned up to their maximum level (right).
3-
Apply a 0dB 1kHz signal on channel 1 input.
4-
Check the output signal on channel 1’s output. Vo=14 Vrms.
5-
Connect the tool equipped with a potentiometer to REMOTE CONTROL CH1.
6-
Check the potentiometer sweep, its response curve and attenuation.
7-
Repeat this procedure on the rest of inputs and outputs, and on remote controls.
8-
When done, leave the REMOTE CONTROL configuration again OFF.
BURNING TEST
Leave the tested unit connected to its correspondent mains voltage, applying input signal
and connecting load impedances, and running at its burn test level for at least 24 hours.
SAFETY VERIFICATION TESTS.
Preliminary:
- Unplug the unit to be tested from the mains outlet.
- Short all ground terminals from signal inputs, outputs and other external connectors, except
the mains plug’s ground.
- Turn on the unit’s main power switch.
Ground continuity test:
Connect the tester’s probes between the mains ground contact and the unit’s backside
main ground test point. When applying a 10A current, verify that the ground impedance is lower
than 0.1
Ω
.
