Microsemi / Symmetricom / Datum bc635VME Time and Frequency Processor
  • Bancomm_bc635VME_View1
  • Bancomm_bc635VME_150256_Board_View1

Microsemi / Symmetricom / Datum bc635VME Time and Frequency Processor

The J4 connector on the front panel is a 15-pin d-sub connector.

Part Number: 11603

Product Family: 5895-01-441-9630 5895014419630 5963-01-406-4552 5963014064552

Have a quote from somewhere else? Click Here
Stock # 51881-1
Quick Quote
Sell Yours
Repair Quote
  • More Info
  • Tech Specs
  • Additional Photos
  • Datasheets / Manuals 
  • View It Live Request 
Contact Us
Microsemi / Symmetricom / Datum bc635VME / bc637VME Time and Frequency Processor

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


Symmetricom / Bancomm / Datum bc635/637VME time and frequency processor module 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 (bc637VME and bc357VXI 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.

Central to the operation of the module is a disciplined 10 MHz oscillator and 100 nanosecond clock. Current time (days to 100 nanoseconds) can be accessed across the bus with zero latency, which allows for very high speed time requests. The oscillator is rate matched (disciplined) to the input time source and drives the precision 10 MHz frequency output and time code generator circuitry. If the time source is lost, the module will continue to maintain time (flywheel). If power is lost, a +/-10 PPM battery backed clock is available to maintain time. Both time code generation and translation are supported. The generator supplies IRIG B or IRIG H time code output that is synchronized to the input time source. The translator decodes IRIG B, 2137 or XR3 time code inputs. An event time capture feature provides a means of latching the time of an event input and/or generating a bus interrupt that is coincident with an external TTL pulse. The module can also be programmed to generate a periodic pulse rate/interrupt as well as to generate a strobe/interrupt at a single predetermined time.

Important Notice: Please note that any additional items included with this equipment such as accessories, manuals, cables, calibration data, software, etc. are specifically listed in the above stock item description and/or displayed in the photos of the equipment. Please contact one of our Customer Support Specialists if you have any questions about what is included with this equipment or if you require any additional information.

Contact Us


Contact Us

Item Images

Click a thumbnail to view larger image:

Symmetricom / Bancomm / Datum bc635VME / bc637VME Time and Frequency Processor
Symmetricom / Bancomm / Datum bc635VME / bc637VME Time and Frequency Processor
Symmetricom / Bancomm / Datum bc635VME / bc637VME Time and Frequency Processor
Symmetricom / Bancomm / Datum bc635VME / bc637VME Time and Frequency Processor

Contact Us

View It Live

View equipment LIVE - Before you buy!

InstraView™ Equipment Inspection

Buying used equipment doesn't always have to be a shot in the dark. We know there are plenty of differences when it comes to used equipment and quite often, choosing between different pieces is difficult, especially when the equipment is not sitting right in front of you.

Well, what if you were able to see a piece of equipment before you purchased it? Not just a picture from the manufacturer's website, but the actual piece of equipment you would receive.
With InstraView™, we move you one step closer to inspecting the equipment you're interested in without having to wait for the equipment to show up at your door.

InstraView™ works in your web browser and allows you to view the actual piece of equipment you're interested in before purchasing. You can zoom in close to see the labels with the serial number or zoom out to see the overall condition of the equipment.

It's like having the store come to you!

InstraView Request Form

To get started:

  1.   Fill in the request form below
  2.   We'll send you an email letting you know exactly when your piece of equipment will be available for viewing

Item to Inspect: 51881-1 - Microsemi / Symmetricom / Datum bc635VME Time and Frequency Processor

All you need is a web browser (ie. Microsoft Internet Explorer or Netscape) and Sun's Java Runtime Environment installed. If you need to install the Sun Java Runtime, you may download the latest Java SE Runtime Environment (JRE) http://www.oracle.com/technetwork/java/javase/downloads/index.html