Orban OPTIMOD 6300 Operating Manual page 68

2-14
INSTALLATION
B) If your main input source is digital, turn the knob to select D
D +J17. Otherwise, select A
IGITAL
The only digital encoding that typically uses J.17 preemphasis (of which
we are aware) is NICAM. D
most anyone using the digital input.
9. Set operating levels.
You will set the operating levels of the 6300 to match the input levels it is receiv-
ing so the 6300's AGC can operate in the range for which it was designed. There
are separate settings for the analog and digital inputs. If you provide both ana-
log and digital inputs to the 6300, optimum adjustment is achieved when the
gain reduction meters show the same amount of processing for both analog and
digital inputs.
This will allow you to switch between analog and digital inputs without
sudden level changes.
A) Press the N
EXT button.
B) Feed normal program material to the 6300.
C) Play program material from your studio, peaking at normal program levels
(typically 0VU if your console uses VU meters).
D) [Skip this step if you are not using the analog input.]
Hold down the A
meter indicates an average of 10 dB gain reduction.
E) [Skip this step if you are not using the digital input.]
Hold down the D
meter indicates an average of 10 dB gain reduction.
10. Set the analog output source.
Because of its versatile signal routing (see page 6-43), OPTIMOD 6300 can be
used as a combined studio AGC, digital radio/netcast processor, and low-delay
talent headphone processor. Its analog output is most commonly used for moni-
toring. If this output drives headphones for talent speaking live, it is best to by-
pass the look-ahead limiter for the chain you are using (AGC or Multiband). This
reduces signal delay by about 7 ms. When you do this, input/output delay is ap-
proximately 3 ms if you choose the AGC output and 5 ms if you choose the mul-
tiband compression output. Even though normal 6300 presets have a delay of
about 20 ms (which most talent can learn to use without discomfort, although
they may need some time to become accustomed to it), bypassing the look-
ahead limiter will reduce bone conduction comb filtering.
A) Press the N
button.
EXT
B) [Skip this step if you will not be using the analog output.]
Turn the knob to choose one of the following processing chains for the
analog output:
NALOG .
, not D
IGITAL
soft button and adjust the knob so that the AGC
NALOG
soft button and adjust the knob so that the AGC
IGITAL
ORBAN MODEL 6300
+J17, is appropriate for al-
IGITAL
IGITAL or