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Specifications
General
Power Requirements
Phantom Power: +24VDC nominal, 75mA
Local Power: +12 to +15VDC, 500mA
Dimensions
See Dimensions Drawings (Figure 11 on page 19)
Environmental Requirements
Storage:
-20° C to 80° C; 0% to 95% RH, non-condensing
Operating:
-15° C to 60° C; 0% to 95% RH, non-condensing
Dynamic-mic Headset/Handset
Microphones
50 to 200 Ohms, dynamic (balanced or unbalanced)
Headphones
150 to 600 Ohm, monaural
Connector Type: XLR-4M
Pin 1 - Microphone Low
Pin 2 - Microphone High
Pin 3 - Headphone High
Pin 4 - Headphone Low
Panel Microphone
Built-in Microphone
2.2k Ohms, electret (44mV nominal),
Omnidirectional
Gooseneck Microphone
Connector Type: 1/4” Threaded TRS, 5k Ohms,
electret (44mV nominal)
Tip Microphone High (+12VDC)
Ring Common
Sleeve Common
Compatible with MCP-90 Series Microphones
Intercom Channels, Balanced Mode
(SW1 set to BAL position)
Output Level
1V
RMS nominal
Input Impedance
300 Ohms
Bridging Impedance
greater than 5k Ohms
Sidetone
20dB adjustable range
Call Signaling
Send
20kHz ±100Hz, 0.5V
RMS ±10%
Receive
20kHz ±800Hz, 100mV
RMS
Mic Kill Detect Frequency
24kHz ±800Hz, 100mV
RMS
Noise Contribution
less than -70dB
Common Mode Rejection Ratio
greater than 50dB
Connector Type:
Six-position push type terminal block
Pin 1 - Audio and DC Common
Pin 2 - Local power (+12 to +15VDC), if needed
Pin 3 - Intercom CH1 audio low and +24VDC power
Pin 4 - Intercom CH1 audio high and +24VDC power
Pin 5 - Intercom CH2 audio low and +24VDC power
Pin 6 - Intercom CH2 audio high and +24VDC power
Intercom Channels, Unbalanced Mode
(SW1 set to UNBAL position)
Output Level
0.70V
RMS ±10%
Input Impedance
200 Ohms
Bridging Impedance
greater than 10k ohms
Sidetone
-40dB, 20dB adjustable range
Connector Type:
Six-position push type terminal block
Pin 1 - Ground
Pin 2 - +30VDC
Pin 3 - CH B Intercom
Pin 4 - CH A Intercom
Pin 5 - NC
Pin 6 - NC
Speaker Output Power
4W max @ 8 Ohms