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Specifications
General
Power Requirements
AC Input:
100-240 VAC, 50/60 Hz
Channel Power:
24VDC nominal (12 - 30 VDC), up to 1 Amp per channel (max. 3.5
Amps)
Dimensions
1.75" (44.5mm)high x 19" (483 mm) wide x 11.25" (286 mm) deep
Weight
approximately 5lb. (2.25 kg)
Environmental Requirements
Storage:
-20° C to 80°C; 0% to 95% humidity, non-condensing
Operating
-15° C to 60° C; 0% to 95% humidity, non-condensing
Dynamic/Electret Mic Headset
Microphone
50-200 Ohm, dynamic (balanced or unbalanced) - 2k Ohm, electret
Headphones
150-600 Ohm, monaural
Connector Type
XLR-4M connector
Input Level
-55 dBu (nominal), dynamic
9 mV, electret
Panel Microphone: Input
Microphone Type
Electret condenser (MCP-90 series microphone)
Power
Phantom (+12 VDC)
Nominal Level
-42 dBu
Maximum Level
-25 dBu
Connector Type
1/4" stereo plug with threaded shaft
Program Input
Input Level
100 mV maximum
Voltage Gain
20 ± 3 dB
Output Level (to intercom channel)
1.0 Vrms nominal, 2.3 Vrms max.
Input Impedance
75 k Ohm
Common Mode Rejection
Greater than 50 dB
Connector Type
9-pin female D-sub (DE9S)
Pin 1
Ground
Pin 2
Program 1 input low
Pin 3
Program 2 input low
Pin 4
Program 3 input low
Pin 5
Program 4 input low
Pin 6
Program 1 input high
Pin 7
Program 2 input high
Pin 8
Program 3 input high
Pin 9
Program 4 input high
Input Channels, Balanced Mode
Output Level
1 Vrms nominal
Input Impedance
300 Ohms
Bridging Impedance
Greater than 10,000 Ohms
Sidetone
-40 dB, 35 dB adjustable range
Call Signaling
Send:
20 kHz ± 100 Hz 0.5 Vrms ± 10%
Receive:
20 kHz ± 800 Hz, 100 mVrms
Mic Kill Frequency
Send
24 kHz ± 100 Hz, 0.5 Vrms ± 10%
Receive
24 kHz ± 800 Hz, 100 mVrms
Noise Contribution
Less than -70dB
Common Mode Rejection Ratio
Greater than 50 dB
Connector Type
One XLR-3M and XLR -3F pair, wired in parallel, for each channel (permits
"loop-through" connection). Four total channels.
Pin 1
Common
Pin 2
Intercom audio low and +24 VDC input
Pin 3
Intercom audio high and +24 VDC input
Intercom Channel, Unbalanced Mode
Output Level
.750 Vrms ± 10%
Input Impedance
200 Ohms
Bridging Impendance
Greater than 10,000 Ohms
Call Signaling
Send
11 ±3 VDC
Receive
4 VDC minimum
Connector Type
Uses the same connectors as balanced mode, above, but with pin-out
modified by BAL/UNBAL switch on back panel as follows:
XLR-3 Unbalanced Configuration Pin-out
Pin 1
Common
Pin 2
+30 VDC input
Pin 3
Intercom audio high
Operation
19
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