RTS Two-Wire Intercom RM-325 产品宣传页

DC Operating Limits (station to power supply):

About 5,000 ft. (1.5 km) with #22 AWG wire

Audio Operating Limits (locally powered stations):

About 10,000 ft. (3 km) with low-capacitance cabling

System Capacitance:

0.3 mF, maximum (10,000 ft. [3 km] cable at 30 pF/ft.)

Intercom Channels:

Station Output Level: 0.7 Vrms (0 dBu) nominal

Channel Terminating Impedance: 200W ±5%

Station Bridging Impedance: greater than 10,000W

Current Source:

Transfer Ratio: 3.3 mA/V = 3.3 milliseconds

Output: ±5 mA into 200W, ±1 Vpeak (limiter threshold)

Call Signalling:

Send: 20 kHz ±100 Hz, 0.3 Vrms nominal

Receive: 20 kHz ±200 Hz, 100 mVrms

Talk- Off Signalling:

Send: 24 kHz ±100 Hz, 0.3 Vrms nominal

Receive: 24 kHz ±200 Hz, 100 mVrms

Power Requirements, Channel Powered RM-325:

30 VDC nominal (standard TW line), 45 to 75 mA

Power Requirements, Locally Powered RM-325:

24 VDC nominal, 45 to 75 mA

Environmental Requirements:

Storage: -40°C to 125°C; 0% to 95% humidity, non-condens-

ing

Operating: 0°C to 50°C; 0% to 95% humidity, non-condens-

ing

Dimensions:

1.72” (44 mm) high, 8.2” (208 mm) wide, 8” (203 mm) deep

Weight:

2 lbs 12 oz (1.23 kg)

Noise Contribution:

Less than -75 dB on the line

Common Mode Rejection Ratio:

Greater than 40 dB from the line

Program Input:

Maximum Input Level: 20 dBu

Nominal Input Level: -10 to +8 dBu

Frequency Response: 100 Hz to 12 kHz ±3 dB

Headphone Amplifier

Voltage Gain: 30 ±3 dB from the line

Maximum Output: 150 mW into 50W

Frequency Response: 100 Hz to 8 kHz ±3 dB nominal

Output Voltage Level: 8 volts peak-to-peak

Headphone Impedance: 50 to 600W

Sidetone:

20 dB minimum range, adjustable

Microphone Preamplifier:

Maximum Voltage Gain: 54 dB

Frequency Response: 100 Hz to 8 kHz, nominal

Input Impedance: 1,000W, balanced

Limiter Range: 30 dB

Total Harmonic Distortion:

Less than 0.2% nominal at Channel output

Auxiliary Connector

Type: DB-15F

Pin 1: Program input low

Pin 2: Program input high

Pin 3: Unswitched mic output high

Pin 4: Foot switch in, channel 1

Pin 5: Foot switch in, channel 2

Pin 6: Local power (+24 VDC)

Pin 7: Remote mic switch in

Pin 8: Not Used

Pin 9: Common

Pin 10: Common

Pin 11: Common

Pin 12: Foot switch channel 1 common

Pin 13: Foot switch channel 2 common

Pin 14: Local power common

Pin 15: Remote mic switch common

CARB MIC Headset Connector

Type: ¼”, 3-Conductor Phone Jack

Tip: Microphone input high (or mic switch contact

Ring: Headphone high

Sleeve: Common

DYN-MIC Headset Connector

Type: XLR-6F 6-Pin Female Audio Connector

Pin 1: Headset dynamic microphone low

Pin 2: Headset dynamic microphone high

Pin 3: Headphone and mic switch common

Pin 4: Headphone left high

Pin 5: Headphone right high

Pin 6: Remote microphone switch contact

Intercom Line Input Connector

Type: XLR-3F 3-Pin Female Audio Connector

Pin 1: Common

Pin 2: Intercom channel 1 audio and power

Pin 3: Intercom channel 2 audio

Intercom Line Loop Connector

Type: XLR-3M 3-Pin Male Audio Connector

Pin 1: Common

Pin 2: Intercom channel 1 audio and power

Pin 3: Intercom channel 2 audio

Program Input Connector

Type: ¼”, 3-Conductor Phone Jack

Tip: Program input high

Ring: Program input low

Sleeve: Common

RM-325 A5F • 2 channel binaural (stereo) program-

mable modular user station • Catalog Number:

90007491000

RM-325 A4F • 2 channel binaural (stereo) program-

mable modular user station with A4M headset con-

nector • Catalog Number: 90007491001

This specifications information is preliminary and is subject to change without notification.

Brand names mentioned are the property of their respective companies.

Telex Communications, Inc.

12000 Portland Avenue South

Burnsville, Minnesota 55337

Telephone: (800) 392-0498

Fax: (800) 323-0498

Form Number: RTS-20352-1

Date: March, 2006