Studer SW V4.0 OnAir 1000 Operating And Service Instructions page 197

Meter in VU Mode:
Date printed: 24.10.03
5. Align for a reading of –1.00 ±0.02 V
potentiometers according to the table below.
Meter no.:
Meter 1 left
Meter 1 right
Meter 2 left
Meter 2 right
6. Align for a reading of +3.06 ±0.10 V
potentiometers according to the table below.
Meter no.:
Meter 1 left
Meter 1 right
Meter 2 left
Meter 2 right
Check: All green LEDs plus 4 red LEDs must be illuminated.
7. Feed a 400 Hz, –33 dB
8. Align for a reading of +560 ±20 mV
potentiometers according to the table below.
Meter no.:
Meter 1 left
Meter 1 right
Meter 2 left
Meter 2 right
Check: 4 green LEDs must be illuminated.
9. Repeat steps no. 4 to 8 above until optimum alignment is reached.
10. Feed a 400 Hz, –9 dB
must be illuminated. A slight correction with RA101/201/301/401 may be
necessary.
11. For checking the integrator stage, feed a 1 kHz, –9 dB
signal (10 ms ON, 1.7 s OFF) to the console. All green LEDs must be illu-
minated. Please note that the top green LED is illuminated for a very short
time only. To improve visibility during this check, the other green LEDs
can be covered, e.g., with a sheet of paper.
12. If required, proceed with the "Correlator Meter Setting" paragraph below.
Note: Once finished, make sure to re-establish the console settings as they were
before the alignment.
1. Make sure that all parameters are correctly set according to the "Proce-
dure" paragraph above.
2. Set jumpers J101/201/301/401 to the VU positions, and jumpers
J102/103/302/303 to the LIN positions.
3. Feed a 400 Hz, –9 dB
4. Align for 0 dB indication on the meters, using the trimmer potentiometers
according to the table below.
Meter no.:
Meter 1, left
Meter 1, right
Meter 2, left
Meter 2, right
Check: All green LEDs must be illuminated.
SW V4.0
OnAir 1000 Digital Mixing Console
, using the test points and trimmer
DC
Test point:
TP102
TP202
TP302
TP402
, using the test points and trimmer
DC
Test point:
TP103
TP203
TP303
TP403
sine-wave signal to the console.
FS
, using the test points and trimmer
DC
Test point:
TP103
TP203
TP303
TP403
sine-wave signal to the console. All green LEDs
FS
sine-wave signal to the console.
FS
Align with:
RA101
RA201
RA301
RA401
Align with:
RA102
RA202
RA302
RA402
Align with:
RA103
RA203
RA303
RA403
sine-wave burst
FS
Align with:
RA101
RA201
RA301
RA401
Service 4-11