CMX641A detector/generator equivalent, dual spm/security detector/generator.
* Two (12kHz/16kHz) SPM Detectors
* Selectable 12kHz/16kHz ASK Generator
* Selectable Tone Follower or Packet
Mode 3-State Outputs
* Excellent Speech-Band.
Provisional Information
* SPM for Pair-Gain Systems
* Payphone Security Applications
* Call Charge Appli.
The CMX641A is a low power, system selectable Dual Subscriber Pulse Metering (SPM) Detector
– two detectors on a single chip
– to indicate the presence on a telephone line of either 12kHz or 16kHz telephone call charge.
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