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compatible with both standard plugs and Cliff twist-locking parts when extra security
is required.
Display
During normal operation, the OLED display shows the status of the battery and two
pseudo-PPM characteristic bargraph level meters. When the battery indicator is
empty, the battery should be changed as a matter of urgency.
The L(ine) meter shows the incoming level at the four-wire input of the unit. The
M(ic) meter shows the level of the local microphone signal including the action of
any optional processing (see below).
Four-wire Communication
The incoming signal at the four-wire input will be sent to the local headset earpieces
according to the setting of the front panel volume control.
The local microphone signal will be transmitted from the four-wire output only when
the front panel Talk button is active. This button can be configured to momentary,
latching or smart operation as preferred (see below). A flashing notification on the
OLED makes clear when outgoing comms are active.
Setup
Several features of the B-FW1 may be customised to user preference. To enter Setup
mode, hold the front-panel SEL button for approx. two seconds. The OLED display
will show the first adjustable parameter and its current value.
Further brief presses of the SEL button will step through the available parameters,
eventually looping back to the beginning. When the desired parameter is displayed,
use the Up and Down arrow buttons to modify the value of the parameter as
required.
To leave Setup mode, hold down the SEL button for two seconds once again. Setup
mode will also be automatically cancelled if no button is pressed for ten seconds.
Adjustments made in Setup mode are stored in non-volatile memory and will
continue to be applied until changed again. The available options are:
Mic Gain
(default value: 30dB)
This sets the gain of the microphone preamplifier. Values from 30dB to 60dB are
available in steps of 3dB.
Mic Phantom Enable
(default value: OFF)
