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OnAir 1000 Digital Mixing Console
4-12 Service
SW V4.0
Date printed: 24.10.03
5.
Check the voltages at the following test points:
TP101/201/301/401:
285 mV
AC
TP102/202/302/402:
–370 ±20 mV
DC
TP103/203/303/403:
+2.55 ±0.10 V
DC
6.
Feed a 400 Hz, –5.5 dB
FS
sine-wave signal to the console.
Check: All LEDs of the bargraph must be illuminated.
Check the voltages at the following test points:
TP103/203/303/403:
+3.8 V
DC
±0.1 V
7.
Feed a 400 Hz, –32 dB
FS
sine-wave signal to the console.
Check: Only the lowest green LED of the bargraph must be illuminated.
8.
Check the voltages at the following test points:
TP103/203/303/403
: +170 mV
DC
±30 mV
9.
If required, proceed with the “Correlator Meter Setting” paragraph below.
10.
Once finished, make sure to re-establish the console settings as they were
before the alignment.
Correlator Meter Setting:
1.
The correlator meter can be aligned regardless of the VU or PPM meter
setting.
2.
Make sure that all parameters are correctly set according to the “Proce-
dure” paragraph above.
3.
For the following adjustment, an oscilloscope with a 10:1 probe is re-
quired. Set the Oscilloscope to: x = 0.5 or 1 ms/div.; y = 0.2 V/div., select
AC coupling, and proceed with step no. 4.
If no oscilloscope should be available, setting the trimmer potentiometers
RA204 and RA404 to their center positions is a tolerable makeshift solu-
tion. In such a case, proceed with step no. 8.
4.
Feed a 400 Hz, –42 dB
FS
sine-wave signal to the console.
5.
Connect the scope probe to pin 6 of IC109.
6.
Measured wave form, typical:
Adjust the pulse duration ratio with trimmer potentiometer RA204 to 1:1;
the pulse amplitude becomes then minimal.
The measured wave form is depending on the input signal level.
7.
Connect the scope probe to pin 6 of IC309 and perform the same adjust-
ment with RA404.
8.
Feed a 400 Hz, –9 dB
FS
sine-wave signal, L/R out of phase, to the console.
9.
Align for a reading of
+1.35 ±0.20 V
DC
, using the test points TP107/307
and trimmer potentiometers RA105/305.
Check: Only one LED at the far left of the bargraph scales is illuminated.
10.
Feed a 400 Hz, –9 dB
FS
sine-wave signal, L/R in phase, to the console.
11.
Align for a reading of
+200 ±5 mV
DC
, using the test points TP107/307 and
trimmer potentiometers RA106/306.
Check: Only one LED at the far right of the bargraph scales is illumi-
nated.
12.
Repeat steps no. 8 to 11 above until optimum alignment is reached.
13.
Once finished, make sure to re-establish the console settings as they were
before the alignment.
Ratio 1:1
Min. amplitude
Содержание SW V4.0 OnAir 1000
Страница 1: ...Studer OnAir 1000 Digital Broadcast Mixing Console SW V4 0 4 03 Operating and Service Instructions...
Страница 24: ...OnAir 1000 Digital Mixing Console 0 6 Contents Part 1 SW V 4 0 Date printed 23 10 03...
Страница 33: ...OnAir 1000 Digital Mixing Console Date printed 23 10 03 SW V 4 0 General 2 5 Dimensions in mm 690 790 636 250...
Страница 34: ...OnAir 1000 Digital Mixing Console 2 6 General SW V 4 0 Date printed 23 10 03...
Страница 82: ...OnAir 1000 Digital Mixing Console 7 2 Signaling SW V 4 0 Date printed 23 10 03...
Страница 88: ...OnAir 1000 Digital Mixing Console 8 6 Machine Control SW V 4 0 Date printed 23 10 03...
Страница 128: ...OnAir 1000 Digital Mixing Console 13 10 Diagnostics SW V 4 0 Date printed 23 10 03...
Страница 164: ...OnAir 1000 Digital Mixing Console 16 6 Index SW V 4 0 Date printed 23 10 03...
Страница 166: ...OnAir 1000 Digital Mixing Console 0 2 Contents Part 2 SW V4 0 Date printed 24 10 03...
Страница 170: ...OnAir 1000 Digital Mixing Console 1 4 Features SW V4 0 Date printed 24 10 03...
Страница 171: ...OnAir 1000 Digital Mixing Console Date printed 24 10 03 SW V4 0 Hardware 2 1 2 HARDWARE 690 790 636 250...
Страница 182: ...OnAir 1000 Digital Mixing Console 2 12 Hardware SW V4 0 Date printed 24 10 03...
Страница 216: ...OnAir 1000 Digital Mixing Console 5 16 Service Terminal SW V4 0 Date printed 24 10 03...
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