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2-26
INSTALLATION
[Skip this step if you are calibrating in another manner.]
Turn on the Studio Level Control System's 100% Calibration Tone.
a)
On the Orban 4000 Transmission Limiter, press both of the 4000's front
panel
TONE
b)
Adjust the output level of the Studio Level Control System for 100%
modulation of the STL.
Adjust the 6200's
c)
Calibrate with an Orban 464A Co-Operator:
D)
[Skip this step if you are calibrating in another manner.]
The 464A does not have a built-in 100% tone. The easiest way to set the
6200 input peak clipping level is to temporarily re-adjust the 464A to pro-
duce clipped waveforms on program material to give a clear indication of
peak clipping level.
Set both channels of the 464A controls as follows:
a)
METER CAL
HF LIMIT PRE-EMPHASIS
OUTPUT ATTEN
INPUT ATTEN
GATE THRESH
RELEASE TIME
REL SHAPE
LEVEL
COMPR
HF LIMIT
SYSTEM
POWER
MODE
b)
Play program material from your studio.
Adjust the 464A's
c)
PEAK OUTPUT LEVEL
d)
Adjust the 464A's
modulation.
Adjust the 6200's
e)
–2dB on the meter on the screen.
Return the 464A to the normal settings.
f)
3. Adjust Analog Input Calibration.
Adjust
(Analog Input Reference) level.
A)
AI REF
[−9dBu to +13dBu (VU), or –1 to +21dBu (PPM)] in 0.5dB steps
buttons.
to indicate –2dB on the input meters.
AI CLIP
0
set to pre-emphasis of your
STL; if no pre-emphasis,
set to 25µs
0
10
0
0
SOFT
OFF
OFF
OPERATE
OPERATE
ON
DUAL
controls so that the 0dB segment on the 464A's
METER CAL
meter just illuminates on program peaks.
OUTPUT ATTEN
so that the program peaks indicate approximately
AI CLIP
controls to drive the STL to 100%
ORBAN Model 6200
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