Studer SW V4.0 OnAir 1000, Operating And Service Instructions

Page: 191 / 361

OnAir 1000 Digital Mixing Console
Date printed: 27.10.03 SW V4.0
Service 4-5
4.3.2 Analog Outputs
1.942.621.xx
Initial Setup: Perform the fader 0 dB point alignment for all faders, according to chapter
13.3.1 of the OnAir 1000 Operating Manual.
Touch the MIXER SETUP field on the touch-screen, followed by
SYSTEM CONFIG and INPUT. The INPUT CONFIG. page will appear.
Adjust all analog line level inputs to your specified nominal level and
headroom (default factory values: nominal level +6 dBu, headroom 9 dB).
Input Signal: If using an analog signal generator: Feed an analog 400 Hz signal with
your specified nominal level to both (L and R) inputs of an analog line in-
put unit (e.g. CH4). Select the corresponding input of this channel by
pressing the A or B key in the channel strip.
If using a digital signal generator: Feed a digital 400 Hz stereo audio sig-
nal of 400 Hz to a digital input unit (e.g. CH9). The generator must pro-
vide a digital output level of “–(your headroom) dB
FS
” (i.e., if your head-
room setting is 11 dB, the generator must be set to –11 dB
FS
). Select the
correct input connector on the INPUT CONFIG. page (XLR, RCA, or
TOS). Select the corresponding input of this channel by pressing the A or
B key in the channel strip.
If using a test CD: If no test generator should be available, a CD player
with an appropriate test CD and connected to a digital input does a good
job as well. If your test CD should provide different levels, refer to the ex-
amples in the following table for setting the output level:
Test CD level (1 kHz sine-wave): 0 dB
FS
–3 dB
FS
–6 dB
FS
–9 dB
FS
–10 dB
FS
–12 dB
FS
–20 dB
FS
Output level @ 9 dB headroom: +15 dBu +12 dBu +9 dBu +6 dBu +5 dBu +3 dBu –5 dBu
For Consoles with Serial No. 1282 and above:
For the most recent console versions, no removal of the Analog Output
Units is required for the output level adjustment. The trimmer potenti-
ometers are accessible through the air vent holes in the upper and rear cov-
ers, as shown in the illustrations below.
Please note that some of the air
vent holes are not perfectly in-line with the trimmer potentiometers, so it is
recommended to watch through the other holes when inserting the align-
ment tool. It is absolutely necessary to use an insulated alignment tool in
order to avoid damage by short-circuits.
• First, perform the steps “Initial Setup” and “Input Signal” at the beginning
of this chapter.
• Select the Channel Control page (e.g. “I 9A”): Touch HOME and press the
SEL key of the corresponding channel. Perform the following settings on
the Channel Control page:
MODE: ST (stereo), LR (normal stereo mode)
PHASE: NORM
CAL: 0 dB
Routing:
- To the PGM and REC outputs; the
Σ
PROGRAM and
Σ
RECORD touch-
screen fields must be highlighted.
- To the AUX outputs: Activate the ON and PF touch-screen fields for
both AUX 1 and AUX 2 outputs. Set the AUX 1 and AUX 2 gain to
0 dB. This position is marked with a dash.
BAL: center position.