User guide

4-1

Clear-Com®

MS-702 Two-Channel Main Station Instruction Manual

SPECIFICATIONS

dBv is an absolute measurement. 0 dBv is referenced to 0.775 V RMS.

Headset Microphone Pre-Amp

Input Type: Dynamic

Impedance: 1K

Input Level: -55 dBV nominal; -10 dBV max.

Frequency Response 200 Hz to 15 kHz

Gain from headset mic to intercom line: +41 dB

Panel Microphone Pre-Amp

Input Type: Electret

Input Level: -45 dBV nominal

Frequency Response 450 Hz to 12 kHz

Gain from panel mic to intercom line: +31 dB

Headphone/Speaker Amplifier

Load Impedance Range: 50

- 2 K

Output Level: At least +20 dBV across 600

Distortion: < 0.2% THD @ 1 KHz

Frequency Response: 200 Hz - 18 KHz,

2 dB

Gain from intercom line: +37 dB

Power Output: 110 dB SPL

Program Amplifier (Transformerless, balanced differential

input)

Input Level: 0 dBV

Input Impedance: > 100 K

Frequency Response: 150 Hz - 18 KHz,

2 dB

Termination Impedance

Impedance: 200

, switchable

Power Supply

Type: Switching, with overcurrent limiting and

reset

circuitry for each channel

Output Voltage: 30 volts DC regulated

Output Current: 1.2A Continuous

2A Peak (Do not exceed the 1.2A rating for

more than 2 seconds per 30 second period)

1.75A max any channel, with electronic

current limiter (Do not exceed the 1.2A rating

for more than 2 seconds per 30 second

period)