OPTIMOD-AM DIGITAL
OPERATION
3-37
A
MOUNT
to 0.
L-R / L+R Ratio Limit
sets the maximum amount of enhancement to prevent multi-
path distortion. However, if the original program material exceeds this limit with no
enhancement, the enhancer will not reduce it.
Diffusion
applies only to the
D
ELAY
enhancer. This control determines the amount
of delayed L–R added to the original signal.
Style
sets one of two stereo enhancer types:
222
or
D
ELAY
.
Depth
sets the delay in the delay line. It applies only to the
D
ELAY
enhancer.
AGC Controls
The AGC is common to the analog AM and digital radio processing chains.
Five of the AGC controls are common to the Full Modify and Advanced Modify
screens, with additional AGC controls available in the Advance Modify screen, as
noted in the following table. (Note that “advanced” controls are accessible only
from 9400 PC Remote software.) These controls are explained in detail below.
AGC
(“AGC Off / On”) control activates or defeats the AGC.
It is usually used to defeat the AGC when you want to create a preset with minimal
processing. The AGC is also ordinarily defeated if you are using a studio level con-
troller (like Orban’s 8200ST). However, in this case it is better to defeat the AGC
globally in System Setup.
AGC Controls
Full Modify Name
Advanced Name
Range
AGC
AGC Off / On
Off / On
AGC DRIVE
AGC Drive
–10 ... 25 dB
AGC REL
AGC Master Release
0.5, 1.0, 1.5, 2 … 20 dB / S
AGC GATE
AGC Gate Threshold
Off, –44 ... –15 dB
AGC B CPL
AGC Bass Coupling
Off, –12.0 … 0 dB
---
AGC Maximum Delta Gain
Reduction
0 … 24 dB, Off
---
AGC Window Size
–25 … 0 dB
---
AGC Window Release
0.5 … 20 dB
---
AGC Matrix
L/R, sum/difference
--- AGC
Ratio
1, 4:1, 3:1, 2:1
---
AGC Bass Threshold
–12.0 … 2.5 dB
---
AGC Idle Gain
–10 … +10 dB
---
AGC Bass Attack
1 … 10
---
AGC Master Attack
0.2 … 6
---
AGC Bass Release
1 … 10 dB/sec
---
AGC Master Delta Threshold
–6 … +6 dB
---
AGC Bass Delta Threshold
–6 … +6 dB
Table 3-5: AGC Controls
Summary of Contents for Optimod-AM 9400
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Page 273: ...OPTIMOD AM DIGITAL TECHNICAL DATA 6 41 RS232 BOARD PARTS LOCATOR...
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Page 284: ...6 52 TECHNICAL DATA ORBAN MODEL 9400 DSP BOARD PARTS LOCATOR DRAWING 32170 000 14...
Page 292: ...6 60 TECHNICAL DATA ORBAN MODEL 9400 DISPLAY BOARD PARTS LOCATOR...
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