dBu is an absolute measurement. 0 dBu is referenced to 0.775 volts RMS
Microphone Pre-Amplifier
Mic to Line (without limiter acting)
Frequency Response: 280 – 15k Hz ± 3dB
Microphone output to line – Audio Level (-50dBm Electret input): -9dBm
Microphone output to line – Distortion: <0.1%
Microphone output to line – Signal to Noise: >65dB
Clear-Com Sound: Yes
Headphone Amplifier
Frequency Response – Line to Headphone: 150 – 20k Hz ± 3dB
Headphone input from line – Audio Level (-9dBm Electret input): 7dBm
Headphone input from line – Distortion: <0.5%
Headphone input from line – Signal to Noise: >50dB
Earphone to Mic – Crosstalk: >80dB
Sidetone – Adjustment Range (-80db mic input): >45dB
Keypad Indicators
Power: Green LED
Talk A and B: Green LED
Call A and B: Orange LED
Connectors
Intercom Line: (2) 6-pin XLR–M–F
Ch. 1 2-Wire
Intercom Channel
Pin 1: Common
Pin 2: PL Power (+28VDC)
Pin 3: PL Ch-B
Pin 4: PL Ch-A
Pin 5: Program Audio
Pin 6: Program Audio
Headset: 4-pin XLR–M
Headset Connector
Pin 1: Mic – (Mic Common)
Pin 2: Mic +
Pin 3: Spkr-
Pin 4: Spkr+ (and 0.5*VCC DC, supply between Pin 4 and Pin 1)
Program Audio Input: XLR-6, Pin 5 and Pin 6
Power
Input Voltage Range: 12-30 VDC
Input Current (Idle): <=25mA
Input Current (Max): <=40mA
Call Voltage
16.5 VDC
Minimum Voltage Needed: 3.3V
Environmental
32?F – 140?F (0?C – 60?C)
Relative Humidity: 0 – 96%, non-condensing
Vibration Frequency Range: 2 – 13.2 Hz
Amplitude: 1.0 mm
Peak Value Frequency Range: 13.2 – 100 Hz
Acceleration Amplitude: 0.7 g
EMC: DNVGL-CG-0339 – Class A
Enclosure: Salt-mist IP-53
Dimensions
3.4 x 4.5 x 1.7 in (HxWxD)
(86 x 114 x 43 mm)
Weight
10.5 oz (0.30 kg)
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