Grass Valley 3400 CopperHead - Manual (Page 74)

68
Operating the Transceiver System
Understanding Intercom Usage with the CopperHead 3400
until you are comfortable with the level of your own voice. This does not affect how others
on the Intercom circuit hear you, only the local level of your voice.
If your system requires Remote activation of Talk Back, you will need to configure a remote
intercom switch or wire a remote intercom signal path to your camera (if your camera
provides remote intercom functionality). Please see
Camera Unit Connectors on page 89 for
information regarding the wiring of GPI type triggers.
To use the Remote Talk Back function, switch the Intercom Local/Remote switch to REM.
The Talk LED will not be dependent on remote activation: it will illuminate when the
Remote Talk Switch is active and go out when the Talk Switch is inactive.
The selection of the active Talk Back Intercom Channel is identical to that when the
Intercom Local/Remote Switch is in LOCAL.
Audio Control Switches
Item 20 in Figure 6-1 is illustrated and explained as follows:
Fig. 6-3: Audio Control Switches
• 1 - Audio Input LINE/MIC Switch
• Left position sets audio inputs to line level (+4dB).
• Right position switches audio inputs to MIC level and enables Switch #2.
• 2 - MIC Input Level Switch
• Left position sets MIC input level to -60dB.
• Right position sets MIC input level to -10dB.
• 3 - IFB WET/DRY Switch
• Left position sets IFB connector to Powered (“Wet”).
• Right position sets IFB connector to Unpowered (“Dry”).
• 4 - PTT (Push-to-Talk)
Sets Intercom push-to-talk function to local or remote.