Amron Amcom II 2825R-7002, Руководство пользователя, Страница: 14 / 47

2825R TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL
2825R-UM REV 3.0
10
the microphone signals are routed to the HSU and the tender can adjust the
controls as necessary.
4.7.2 Treble Boost
–
Selects the amount of gain added to the High Frequency (HF)
portion of the divers’ microphone signals. This compensates for the HF drop-off in
the sensitivity of most microphones. The TREBLE BOOST feature allows for
optimum frequency enhancement and improved intelligible speech from the diver’s
voice.
4.7.3 Depth Control
–
Selects the amount of frequency correction performed by the
HSU to produce intelligible speech. This control uses a multi-turn potentiometer
and is equipped with a turn counting knob and lock. Once the desired setting is
reached, the lock can be used to prevent accidental changes to this control.
4.7.4 Noise Reduction Filter
–
The Noise Reduction Filter (NRF) uses a complex Digital
Signal Processor algorithm based on a statistical-model of human voice activity to
capture the background noise and reduce it without affecting the divers’ speech.
The noise level can be reduced by up to 17 dB.
4.8 Option Controls: Wireless Tender /28A Option
This option is mounted in the right hand side of the front panel. This Wireless Tender Option
is for four-wire (Full Duplex) operation only. System comes standard with a remote wireless
tender module
4.8.1 Wireless Option Panel
–
Comes standard with antenna and power on/off switch.
The “ON/OFF” switch powers the wireless PC card inside the communicator. The
antenna has a swivel and tilt that allows the antenna to be folded down during
shipment. For operation, the antenna should be pointing upwards. For installations
where the Diver Communicator is located inside a structure, there is an optional
Remote Antenna kit available. This kit allows the antenna to be located outside the
structure for maximum effective range.
IMPORTANT: When the wireless option is not used, turn the option panel switch to
“OFF”. When option panel switch is turned “ON”, the wireless remote should be
“ON”. Otherwise a static noise may be heard through the communicator’s panel
speaker as it scans for available Remote Wireless Tender.
4.8.2 Remote Wireless Tender Module
–
This module comes standard with an internal
rechargeable battery. Headset and external 110V charger jacks are located on
remote module.
4.8.3 On/Off-Volume Control
– Adjusts the listening volume and turns the unit “OFF”
when it is turned completely upwards.
4.8.4 Talk Push Button
–
This button is located on the top of the unit and is labeled
TALK. When i
t’s first turned on, the Remote Wireless Tender Module is in Standby
Mode (listen only) as indicated by the LED closest to the button being red. When
the button is pressed, the Remote Wireless Tender Module is in
“Talk Mode” (listen
and talk, full duplex) and the LED is green. Pressing the TALK button toggles
between the two modes. Multiple Remote Wireless Tender Modules can be in the