187
Auxiliary Audio Input Adjustment
Auxiliary Audio Input Adjustment
Auxiliary audio input is not run through an AGC circuit, but it is notch-filtered when
transmitted over tone-controlled channels. The adjustment is best performed while
monitoring the deviation on the channel over which the auxiliary audio is being
transmitted. Fully compressed voice from the console will be at 0.75 Vrms (0 dBm, 2.2
Vpp).
Model 4018 input audio adjustment potentiometer is R63, labeled AUX. See
for
its location. Models 4118 and 4217B adjustment is labeled AUX IN and is located on the
).
Other Audio Adjustments
Speaker Minimum Audio Level
The minimum audio level is the level of audio produced when the front panel volume
knobs are turned completely down.
To set the minimum audio level, adjust the potentiometers next to the associated speakers
on the display board. The Model 4018 select speaker adjustment is R32 and unselect is R1.
Models 4116B, 4118, and 4217B select speaker is R32 and unselect is R5. These are set at
the factory for no audio output (completely counterclockwise) with the volume knobs
completely off.
Other adjustments on the display board are set at the factory and should not require
adjustment. If the display board is replaced or repaired, make the adjustments listed in
Table 81: Replaced Display Board Adjustments
Model 4018 Model 4118
and 4217
Description
R21
R1
Display contrast, adjusted for best viewing
R34
R20
Select speaker DC bias, adjusted for
minimum DC voltage across select speaker 0
±30 mV
R7
R4
Unselect speaker DC bias, adjusted for
minimum DC voltage across unselect speaker
0 ±30 mV
Содержание 4000 Series
Страница 1: ...Series 4000 Communication Control System Installation and Configuration 025 9533Y...
Страница 6: ...6 025 9533Y...
Страница 28: ...Introduction 28 025 9533Y...
Страница 88: ...Common Control Equipment Installation 88 025 9533Y Figure 22 Console Duplex Wall Jacks...
Страница 110: ...Common Control Equipment Installation 110 025 9533Y...
Страница 172: ...Console Installation 172 025 9533Y...
Страница 192: ...Audio Level Adjustments 192 025 9533Y...
Страница 230: ...Accessory Installation 230 025 9533Y...
Страница 236: ...Console ANI Programming 236 025 9533Y...
Страница 339: ...339 RSMP Operation Figure 99 Main Screen...
Страница 350: ...Radio System Management Program 350 025 9533Y...
Страница 362: ...Appendix B Troubleshooting 362 025 9533Y...
Страница 417: ...417 Index wiring accessories 164 wall jack 86 wiring diagram for M4219 244 X XMT button labels 332 XP settings 247...
Страница 418: ...Index 418 025 9533Y...