CHAPTER 1
Description and Specifications
Description
General
The Model 4030 is a portable user station for use with RTS/Telex two-wire or 4010 IFB intercom systems. The Model 4030 is a listen-only IFB belt pack that can be used to listen to one or two intercom or program channels.
Features
• Powered externally, via the intercom system power supply on channel one.
• Power ON indicator
• Headset/Earset jack set for a wide range of operations.
• Monaural phone jack for intercom channel one.
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Specifications
Power Requirements
32 VDC nominal (standard RTS line), 150mA maximum
Environmental Requirements
Storage: -20°C to 80°C, 0% - 95% humidity, non-condensing
Operating: 0°C to 50°C, 0% - 95% humidity, non-condensing
Dimensions:
Physical: 3.65” (92.77mm) L x 3.75” (95.3mm) W x 1.5” (38mm) D
Weight: 10.8 oz. (303g)
Interface Requirements
Earset/Headphone compatibility
Accepts 50 to 600 ohm earsets or headphones
Audio input requirements
Input Level: 2V p-p (0dBu) nominal
Input Impedance: 200 ohms ±5%
Noise Contribution
Less than -60dB nominal
Headphone Amplifier
Voltage Gain
27±3dB from intercom channel to earset
Maximum Output
65 mW into 150 ohms
Frequency Response
250Hz to 8kHz +1/-4dB
Connector Pin Configuration
Headset Connectors
Type: 1/4” Monaural Plug
Tip: Headset Audio High
Sleeve: Headset Audio Low
Type: 1/4” Stereo Plug
Tip: Headset Channel 1 Audio High
Ring: Headset Channel 2 Audio High
Sleeve: Headset Audio Low
Audio/Power Connector
Type: XLR-3F
Pin 1 Common
Pin 2 Channel 1 audio and power input
Pin 3 Channel 2 audio
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