Synchronizing ION 92040 via IRIG-B

[ManuelTrebilcock]

Hello everyone,

We are in the design phase of an architecture intended to synchronize 6 ION 92040 via IRIG-B. The time server must be a GE RT430.

In the ION manual is stated that you can connect an IRIG-B source to one of the meter's digital input for IRIG-B synchronization and that you must configure both, the meter's digital input and the meter's clock. I have the following questions: 

• What's the configuration you have to do?
• Which technique can be used to transmit the unmodulated code, TTL, RS232, RS485, etc, and how to connect it to the digital input properly?
• Can you implement a daisy chain connection for the synchronization of all the meters?

Beforehand, thank you for your time.

Best regards,

Manuel Trebilcock

[Charles_Murison]

Hello @ManuelTrebilcock 

For the configurations, there are 2 modules I know of that need to be configured. The clock module's time synchronization source and Digital input's mode needs to be set to IRIG-B

@DanL 

Do you know the answers to the questions:

• Which technique can be used to transmit the unmodulated code, TTL, RS232, RS485, etc, and how to connect it to the digital input properly?
• Can you implement a daisy chain connection for the synchronization of all the meters?

Regards,

Charles

[Yut · Accepted solution]

I'm working with the GPS Synchronize for long time. ION meter can do time synchronize as follow.

To serial port, the clock transmits signal in ASCII format such as Truetime/Datum meters can be daisy chain connected via RS-485 fashion network .

To IRIG-B port (On board DI), clock transmits signal in TTL, DCLS whatever the manufacturer of the clock called unmodulated type this can be daisy chain as long as the the total impedance do exceed the clock output capability i.e. 10k ohms in case of the Arbiter brand.

For service

If ASCII type, a computer install with Hyper Terminal software or any is needed for monitor the signal.

IF IRIG-B type, an oscilloscope is needed for monitor the signal.

Time sync. check can be done using diagnostics module output monitor see ION Reference.