Time & Frequency

VMEbus Time Code Reader &
VME Time & Frequency Processor
VME Time & Frequency Bus Products

VMEbus Time Code Reader- PCO3V
Key Features
VME Time & Frequency Processor-TTM635/637VME
Key Features

Translates IRIG A, IRIG B, IRIG G, 2137, XR3, NASA 36
Translates Codes Forward, Reverse, High Speeds, Low Speeds
Accepts Carrier Frequencies from 125 Hz to 500 kHz
Zero Latency Access to Decoded Time
Two Programmable Time Coincident Strobes/Interrupts
Programmable Heartbeat Pulse/Interrupt
External Event Time Capture/Interrupt

6U, Single Width VME or VXI Module
GPS or Time Code Inputs
Time Code Output
1PPS Pulse Rate Output/Interrupt
Frequency Outputs (1, 5, 10 MHz)
External Event Capture/Interrupt
Programmable Periodic Output/Interrupt
Programmable Time Strobe Output/Interrupt
Battery Backed Clock
Extensive Driver Support

Symmetricom's PC03V is a double height VMEbus module designed to translate serial time code signals and to provide additional capabilities not normally found in a single board time code reader. Any of the six most commonly used time codes are translated in either the forward or reverse direction and at tape speeds that are slower or faster than real time. This makes the PC03V an ideal unit for use in tape search applications. pco3v

Symmetricom's TTM635/637VME and TTM350/357VXI time and frequency processor modules provide precision time and frequency reference to the host computer and peripheral data acquisition systems. Time is acquired from either the GPS satellites using a supplied antenna/receiver (TTM637VME and TTM357VXI only) or from time code signals, typically IRIG B. Integration of the module is facilitated with optional drivers for several operating systems (see Options). Time is displayed on the front panel (hours, minutes, seconds) via LED digits.
ttm635