Installation Manual Instruction Manual

Chapter 3: Programming
72 Concord 4 Installation Manual
Access code
Shortcut: 09006
Default: **** or None
This setting determines the four-digit code required to access the audio
verification module to start an audio session. If no code is programmed,
pressing * starts an audio session.
To delete an access code, with the display showing AUDIO VERIFY
OFF/ON, press A or B until the display shows ACCESS CODE
nnnn (current code). Press D to delete.
VOX microphone gain
Shortcut: 09007
Default: 14
This setting determines the microphone sensitivity for triggering voice-
activated switching (VOX). For the Interrogator 200, the default setting
(14) is recommended.
Room size, acoustics, and furnishings where the Interrogator 200 is
located will influence the setting. Setting range is from 01 (low) to 64
(high).
VOX gain range
Shortcut: 09008
Default: 64
This setting determines the gain range for voice-activated switching
(VOX). Setting range is from 01 (low) to 64 (high). For best results, this
setting should be higher than the VOX microphone gain.
Manual microphone
gain
Not used.
VOX RX gain
Shortcut: 09010
Default: 08
This setting determines the receiver (talkback) gain level for voice-
activated switching (VOX). Setting range is 01 to 10. If the VOX is
switching the speaker on when the central station operator is not talking,
lower this setting and the VOX microphone gain setting. If the VOX is
not switching the speaker on when the central station operator is talking,
raise this setting and lower the VOX microphone gain setting.