Power/Metering Board - Aphex Studio Dominator 700 Operating Manual

10.2
POWER/METERING BOARD
10.2.1 Power-Up
a. Apply power and check power supply
regulator outputs for nominal voltages.
b. Check all red and green LEDls and mechanical
operation of the pushbuttons.
10.2.2 Beginning Settings
a. DRIVE pot full CCW.
b. RELEASE TIME full CWo
C.
Equalizers CENTER (12 O'Clock)
d. All pushbuttons GREEN.
e. TEC off.
f. OUTPUT at +6.
NOTE: ALL TESTS ARE CONDUCTED WITH AN INPUT TO THE
LEFT CHANNEL ONLY EXCEPT STEP 10.2.6.
10.2.3 ALT Test
a. Set the generator for 1KHz at OdBm but turn off
the generator output. Switch PROCESS to ON.
b.
Measure the ALT voltage on pin 7 of U501. It
should be about 1.8 to 2.0 volts DC.
c. Switch on the generator and raise the DRIVE from
minimum while watching the ALT voltage. The
ALT voltage should drop to about 1.4 volts before
full drive
is
reached.
10.2.4
Metering Test
a.
Set the generator to -lOdBm at 1KHz.
drive control until the ALT voltage
starts to drop.
Adjust
just
the
b.
c.
The first limiting LED should
Switch the generator output
limiting LEDls should go on.
just be coming an.
to adBm. All 10
d.
Now reduce the generator output in 1dB steps
and
observe the LEDls go off one at a time,
10.2.5
TEe Test
a. Set generator to adBm at 5KHz.
b. Set PROCESS to OFF.
c.
Raise DRIVE to obtain about OdBm output.
d. Turn TEe lIonll.
e. Observe the audio output on a triggered scope
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