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User Manual for Telex CM-300L Console Mount User Station w an A4F Headset Connector Click to enlarge the picture
Contents of the user manual for the Telex CM-300L Console Mount User Station
- Product category: Wired Intercoms Telex
- Brand: Telex
- Description and content of package
- Technical information and basic settings
- Frequently asked questions – FAQ
- Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
- Authorized service for Telex Wired Intercoms
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User manual for the Telex CM-300L Console Mount User Station contain basic instructions
that need to be followed during installation and operation.
Before starting your appliance, the user manual should be read through carefully.
Follow all the safety instructions and warnings, and be guided by the given recommendations.
User manual is an integral part of any Telex product,
and if it is sold or transferred, they should be handed over jointly with the product.
Following the instructions for use is an essential prerequisite for protecting
health and property during use, as well as recognition of liability on the part of the manufacturer
for possible defects should you make a warranty claim. Download an official Telex user manual in which you will find instructions on how to install, use, maintain and service your product.
And do not forget – unsuitable use of a Telex product will considerably shorten its lifespan!
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Product description The CM-300L Console Mount User Station w/ an A4F Headset Connector from Telex is a two-channel select console mount user station. The user station is designed to be used in a full duplex, conference line intercom system.It features a microphone limiter circuit, separate dynamic and carbon microphone inputs and silent channel-select switching. In normal system operation, one or more users talk and the others listen. A microphone switch on each station allows the talker's microphone to be enabled and allows the listeners to keep their microphones disabled.The unit is housed in a solid metal front cabinet and the back is open for console mounting. The CM-300L uses the MCP-3 mounting kit. - Volume Control
- The volume control on the CM-300L has a wide range to compensate for: user hearing differences, ambient noise variation, variations in headset / handset sensitivity, and variations in voice. The volume control in the CM-300L reduces distortion by driving the headphone amplifier only as much as needed
- Microphone Switch
- In normal system operation, one or more users talk and the others listen. A microphone switch on each station allows the talker's microphone to be enabled and allows the listeners to keep their microphones disabled. In this condition, speech intelligibility is enhanced since background noise from other microphones is not present. On the Model CM-300L, a toggle switch turns the microphone on
- Channel Select Switch
- A channel selector switch allows a choice of two (optionally three) channels. When the switch is on the "1" position the station talks and listens on channel 1, on the "2" position, to channel 2
- Call Light Push Button
- Pushing this button transmits a call signal to all other units on the channel selected by the channel selector switch. A call signal on this channel will cause the call light push button to flash. The flash rate is 2 to 5 times a second. The call signal itself is a 20kHz signal
UPC: 800549425100 In the Box Telex CM-300L Console Mount User Station w/ an A4F Headset Connector 3-Year Warranty Table of Contents
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Technical parametersTelex CM300L A4F Specs | Input Voltage | TW mode: 18-35 V DC
LP option: 15-35 V DC
Battery: 12-35 V DC (reduced performance) | | Current | Quiescent
23 milliamperes ±10%
33 milliamperes ±10%
Operating 25 Ω headphones
37 milliamperes ±10%
45 milliamperes ±10%
Operating 25 Ω headphones + call light
60 milliamperes ±10%
Impedance across line: 10,000 Ω, minimum | | Environmental Conditions | Temperature
Operating: 32-140°F (0-60°C)
Storage: -40-185°F (-40-85°C)
Humidity
Operating and storage: 5-95% non-condensing | | Noise | One unit: -75 dBu
Ten units: -67 dBu | | Panel Microphone Preamp | Microphone preamplifier
Input impedance: 470 Ω/dynamic mic
Source impedance: 200 Ω, nominal
Maximum input level: 150 millivolts
Frequency response: 100Hz-10kHz ±3 dB (-54 dBu input)
Limiter range: 30 dB
Carbon mic excitation current: 10 millliamperes, nominal | | Source | Current source
Transfer ratio: 3.3 milliamperes/volt=3.3 millisiemens
Output: ±5 milliamperes into 200 Ω = ±1 volt peak, nominal | | Headphone Amp | Voltage gain: 34 dB
Output voltage: 8 volts peak-to-peak into 25 ½
Output power: ½ watt peak into 25 Ω
Frequency response: 150Hz-8kHz ±3dB
Headphone impedance range: 25-600 Ω (600-2000 with reduced levels)
Note: Do not use headphones with impedance less than 25 Ω.
Sidetone adjustment range: -20dB to full on | | Call Light Levels | Signaling frequency: 20,000Hz ±100Hz
Flashing rate: 5Hz ±2Hz | | Connectors | Headset connector
Dynamic microphone: XLR type 4-pin female
Carbon microphone: ¼" standard phone jack, 3-circuit
Live connection:
Input: XLR type 3-pin female
Loop/external: XLR type 3-pin female | | Finish | Front panel: light gray enamel paint, Federal standard 595A Color #26492Chassis: gold iridite over aluminum | | Dimensions (H x W x D) | 2.8 x 6.3 x 6.4" (69.9 x 158.75 x 162.6mm) | | Weight | 1.2 lb. (0.6kg) | | | | Package Weight | 2.15 lb | | Box Dimensions (LxWxH) | 10.0 x 7.5 x 5.5" |
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