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OPTIMOD
3. Set 8200ST Output Level with tone.
Press the
A)
TONE
The
TONE
If they do not, re-strap jumpers JB and JC to "peak." (Refer to Figure 2-5.)
The 8200ST is now producing a 400Hz sine wave at each output. The peak
level of this tone corresponds to 100% modulation.
Adjust the
B)
L OUT
to 100% modulation.
The L OUT and R OUT controls are now correctly calibrated to the trans-
mitter. If no significant overshoot occurs in the transmitter, the
MODULATION meter will now give an accurate indication of peak modula-
tion of the STL.
Turn off the tone by pressing the
C)
If the STL transmitter suffers from bounce or overshoot, you may have to
reduce the L OUT and R OUT control settings to avoid peak over-
modulation caused by overshoots on certain audio signals.
4. Set controls for normal operation with program material.
The following assumes that a VU meter is used to determine 8200ST line
drive levels with program material.
Set controls as follows:
A)
HF LIMITER:
L OUT:
R OUT:
GATE:
RELEASE:
VOICE:
AGC:
COUPLE:
B)
Feed the 8200ST either with tone at your system reference level (0VU), or with
typical program material at normal levels.
Adjust the
C)
GAIN REDUCTION
We recommend 8-15dB gain reduction for most formats.
button on the 8200ST.
lamp should light and the modulation meters should indicate "0."
and
controls so that the STL transmitter is being driven
R OUT
TONE
Set to match the pre-emphasis of the transmission system
Do not change
Do not change
12:00
12:00
OFF
ON
ON
control for the desired amount of gain reduction.
button.
2-15
INSTALLATION
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