110
9.5 With the above input applied to the
channel 1 RCA input, measure the output
level at the channel 2 output. It should be
> -70 dB.
9.6 Change the input frequency to 20 kHz.
Measure the output level at the channel 2
output. It should be
> -55 dB.
9.7 Repeat steps 9.3 to 9.6 for the channel 2
RCA input jack and also the channel 1 and 2
XLR nputs.
10. Level Control Attenuation Test
Note: The PS602P Amplifier uses two 21
detent potentiometers, located on the front
panel. This test checks attenuation at three
detent positions as defined below.
10.1 Set the Output 1 and 2 DIP switches to
Low-Z mode (right). Set the GLOBAL OUT
DIP switch to 70V (left). Set the Output 1 and
2 Level Controls on the front panel to 0 dB
(fully CW).
10.2 Connect 4 Ohm, 300 W loads to the
channel 1 and 2 outputs.
10.3 Apply a 1 kHz, -19.3 dBV input to the
channel 1 and 2 XLR input jacks.
10.4 Change the dB meter scale to dBr.
Reference the dB meter to the output level.
10.5 With the above signal applied, rotate
the channel 1 and 2 OUTPUT ATTEN con-
trols CCW from zero toward - Infinity. Verify
that the output level decreases from 0 dBr in
accordance with the below table.
11. Mute Control Test
11.1 Connect the black 2-pin mute conn-
ector to a SPST toggle switch. Plug the
mute connector into the MUTE jack on the
amplifier rear panel.
11.2 Set the Output 1 and 2 DIP switches to
Hi-Z mode (left). Set the GLOBAL OUT DIP
switch to 100V (right).
11.3 Connect 32 Ohm, 300 W loads to the
channel 1 and 2 outputs.
11.4 Apply a 1 kHz, -19.3 dBV input to the
channel 1 and 2 RCA input jacks.
11.5 Measure the output level at the channel
1 and 2 output jacks. It should be +31 dBV
+/- 1 dBV.
11.6 With the above signal applied, close the
SPST toggle switch. Verify that the output
level immediately decreases from +31 dBV
to 0 dBV. Open the switch and verify that the
output level returns to +31 dBV.
12. Auto Standby Test
12.1 Set the AUTO STANDBY DIP switch on
the rear panel to the ON position. Set the
Output 1 and 2 DIP switches to Hi-Z mode
(left). Set the GLOBAL OUT DIP switch to
100V (right).
12.2 Connect 32 Ohm, 300 W loads to the
channel 1 and 2 outputs.
12.3 Apply a 1 kHz, -19.3 dBV input to the
channel 1 and 2 RCA input jacks.
12.4 Measure the output level at the channel
1 and 2 output jacks. It should be +31 dBV
+/- 1 dBV.
12.5 Reduce the input signal level to < -55.2
dBV. Verify that after a 20 minute period that
the amplifier switches to standby mode.
12.6 Increase the input signal level above
-55.2 dBV. Verify that the amplifier comes
out of standby mode after about 2 seconds.
PROCEED TO THE HI-POT AND
GROUND BOND TESTS ON PAGE 114
------------------->
TEST PROCEDURES
Position Attenuation Limit
5 -5.0 dBr +/- 1.0 dB
10 -10 dBr +/- 1.0 dB
16 -16 dBr +/- 1.0 dB
To Next Page
Loading...
Need help?
General