Grass Valley 3400 CopperHead - Manual (Page 73)

67
CopperHead 3400
User Guide
• LISTEN:
To set listening level for an intercom channel or the PROGRAM Audio, adjust the
desired LISTEN control knobs at the top of the Audio Interface box (
Figure 6-1 : #14, 15,
16).
To set listening level for the Program level (mixed in with the Intercom audio), adjust
the PRGM control knob. When there is activity on either of the Intercom Channels or
the Program audio, the indicator LEDs while come on. The drawing represents activity
on CH1 Intercom.
• TALK:
The Intercom Talkback Control or Channel Select Switch controls ( Figure 6-1 , #18)
which Intercom Channel is active for Talk Back from the Camera Position. This switch
does not control which Intercom audio stream you will hear. The Channel Select Switch
is a five-way toggle switch.
To turn on Talk Back for an intercom channel, push the toggle switch up or down,
depending on which channel desired.
• Assuming the LED for CH1 Talk is not lit, the first push up on the switch will turn on
the CH1 Talk Back and the LED will illuminate.
• The second push up on the switch will turn off the CH1 Talk Back and the LED will
go out.
• A third push up on the switch will once again turn on the CH1 Talk Back.
The Channel 2 Talk Back works identically with the switch being pushed downward to
control the Talk Back function.
The middle position allows both channels to remain in the off position.
The following diagram illustrates how the Audio Interface Box should look with both
Intercom Channels Active and Talk Back enabled locally for both Intercom Channels.
Fig. 6-2: Local Activation of Channel 1 Talk Back and Both Intercom Channels
To set Intercom Side Tone Level, first establish Intercom communication and have the
Intercom traffic continue while you adjust Side Tone. Activate Talk Back on an Intercom
Channel and begin talking. With a “Tweaker” type screwdriver, adjust the Side Tone Level
The intercom LEDs with the
mic open and audio activity
on channel 1.
The intercom LEDs with the
mic open and audio activity
on channels 1 & 2.