IFB-325
RTS
IFB-325
RTS IFB-325 Hardwired IFB
This listen-only single channel IFB earset station provides a mono (either interrupt or non/interrupt selected at 4010) audio signal to the user. It can be used on a standard RTS® Two-Wire Intercom line as a listen-only station. Features volume control in an extruded aluminum case. The IFB-325 can also be used with the MCE-325 as a basic IFB system.
Product Weight: 1.0 lb
Dimensions: 3.25”H x 3.5”W x 1.8”D
Technical Tools
PDF Documents
- Product Manual - RTS - IFB-325 (927 KB)
Manufacturer Specs
GENERAL
Channel Supplied Power Requirements: 32 VDC nominal (standard RTS line), 50 to 80 mA
Environmental Requirements
Storage: -4°F to 176°F ; 0% to 95% humidity, non-condensing
Operating: 32°F to 122°F ; 0% to 95% humidity, non-condensing
INTERFACE REQUIREMENTS
Earset
150 to 600Ω headphones
RTS Intercom Channel
Input Level: 2Vp-p (0dBu) nominal
Input Impedance: 200Ω ±5%
Noise Contribution
less than -60dB on the line
HEADPHONE AMPLIFIER
Voltage Gain: 27 ±3dB from the line
Maximum Output: 165mW into 150Ω
Frequency Response: 250Hz to 8kHz +1/-4dB
CONNECTOR PIN CONFIGURATIONS
Headset Connector
Type: 1/4” Monaural Plug
Sleeve: Headset audio low
Tip: Headset audio high
Intercom Channel Connectors
Type: XLR-3F
Pin 1 Common
Pin 2 Intercom Channel 1 (audio and +32 VDC input)
Pin 3 Intercom Channel 2 (audio)
Channel Supplied Power Requirements: 32 VDC nominal (standard RTS line), 50 to 80 mA
Environmental Requirements
Storage: -4°F to 176°F ; 0% to 95% humidity, non-condensing
Operating: 32°F to 122°F ; 0% to 95% humidity, non-condensing
INTERFACE REQUIREMENTS
Earset
150 to 600Ω headphones
RTS Intercom Channel
Input Level: 2Vp-p (0dBu) nominal
Input Impedance: 200Ω ±5%
Noise Contribution
less than -60dB on the line
HEADPHONE AMPLIFIER
Voltage Gain: 27 ±3dB from the line
Maximum Output: 165mW into 150Ω
Frequency Response: 250Hz to 8kHz +1/-4dB
CONNECTOR PIN CONFIGURATIONS
Headset Connector
Type: 1/4” Monaural Plug
Sleeve: Headset audio low
Tip: Headset audio high
Intercom Channel Connectors
Type: XLR-3F
Pin 1 Common
Pin 2 Intercom Channel 1 (audio and +32 VDC input)
Pin 3 Intercom Channel 2 (audio)