i.
Adjust volume VR to the minimum, turn LIMITER switch to the position of ON.
Set CH1 and CH2 in short circuit, then adjust the VR volume to the maximum, the
LED for LIMITER on the panel will be illuminated, the consumption power should
be less than 100W.
j. When the output reaches the MAX, set the output in short circuit, the consumption
power should be less than 700W.
The finished-product test procedure
a.
Set LIMITER and BRIDGE switches at the position of OFF, turn the VRs of CH1
and CH2 to maximum, then turn on the power switch on the panel, the power LED
will be illuminated (blue), OPERATING/PROTECTION LED is illuminated to be
red at first, then become green after 2-5 seconds, the fan will be running. CLICK
will be audible from the relay.
b.
Input a 1KHz/3dB signal to CH1 and CH2, then each input channel with 4
Ω
of
the CH1 and CH2. Each output should be 69.2V, the distortion should be 0.05%.
c. DISTORTION (SMPTE-IM): Less than 0.05%
FREQUENCY RESPONSE: 20 to 20 Hz +/-1dB, 10 to 6/-3dB
SNR: 102~108dB below rated output (full band)
d. Turn the power switch of the LIMITER to the position of ON. When input the
signal of 1KHz/+10dB, the clip LED on the panel will be illuminated and the level
of output signal won’t be increased anymore.
e. Press BRIDGE switch, input the 1KHz/4dB signal to CH1. Connect a 8
Ω
load to
bridge output terminal, the output should be more than 128V, the distortion ratio
should be less than 0.7%
f. Adjust the VR volume to minimum, turn the power switch of the LIMITER to ON
position. The CH1 and CH2 separated short circuit, then adjust the VR volume to
the maximum, the LED for LIMITER should be illuminated. The power
consumption should be less than 100W.
g.
When the output reaches the MAX, set the output in short circuit, the
consumption power should be less than 700W.
