Fiber Optic Communications Systems |
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| CT/CR-7204 | Fiber Optic Supervised Contact Closure |
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| Contact Closure for Fire Alarm Status Monitoring Applications | |||
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The Liteway© CT/R-7204 system consists of the CT-7204 transmitter and CR-7204 receiver. The system utilizes digital encoding techniques to transmit and receive four separate contact closures over a single optical fiber conductor. The CT-7204 inputs are activated via a supervised contacts closure. The CR-7204 will reproduce these inputs as isolated output contact closures corresponding to the respective input signal. All inputs are transient protected against excessive surges present on the signal and power leads. The link is completely fail-safe in that a loss of operating power at transmitter or a broken fiber will Rx contacts will remain in their last know position, and an alarm (trouble) relay will close. Integral indicators are provided on both units to continuously indicate the link and contact closures status as well as proper operating power thereby making system troubleshooting simple. |
| Specifications | Important Features | ||
| Number of Channels | Four independent channels | · Four Independent Contacts on One Fiber | |
| Transmitter Input | Supervised Contact Closure | · Signal &
Power, Link & Contact Indicators |
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| Receiver Output | Relay Contact Closure | · Stand-alone,
DIN or
Rack Mountable (same unit) |
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| Output Contact Rating | 0.5 A @ 125 VAC (62.5VA) 1.0 A @ 24 VDC |
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Multimode and Single-mode Version |
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| Output Contact carry current | 2.0 Amps maximum | ||
| Output Contact Resistance | 100 milliohms maximum | ||
| Operating Wavelength | 850, 1310 or 1550nm | ||
| Speed of Response | 300 ms maximum | ||
| Optical Output Power | -15 dBm (multimode), -15 dBm (single-mode) |
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| Optical Loss Budget | 0-10 dB (multimode), 0-12 dB (single-mode) |
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| Optical Connectors | ST (multimode) FCPC (single-mode) |
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| Signal Connector | Removable terminal block | ||
| Humidity | <95% non-condensing | ||
| MTBF (per MIL HBK 217D) | >120,000 hours | ||
| Power Requirements | 11-28 VAC/DC @110mA | ||
| Operating Temperature | -30?C to +75?C | ||
| Physical Size | 5.0?(127)H x 1.0"(25.4)W x 3.0"(76)L |
Note all specifications are subject to change without notice
Copyright 2025
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