Products > Test Equipment

ZYT GPSDO - Trimble guts

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kj7e:
Picked up one of the recycled Trimble GPSDO units from ZYT_GPS eBay seller;
https://www.ebay.com/itm/Trimble-LCD-GPSDO-10MHz-1PPS-OCXO-GPS-Disciplined-Oscillator-2019-5-8/312599997545?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

Very please with it, not had much time to play with it, but it agrees with my BG7TBL NEO-M8T modded GPSDO well within 1mHz, typically within 300uHz or 3^10-11

Here are some photos, Ill have to add a few more of the various screens later;









kj7e:
Its nice to see two GPSDO's agree so closely, using the BG7TBL for the HP 53132A reference and A channel is measuring the ZYT unit.  53132A has a -10MHz offset, 100sec gate.  Here, the ZYT is showing 52.7uHz lower than the BG7TBL or < 6^10-12 difference between the two.






Some of the other screens and data available from the ZYT unit;









The ALM2 is due the GPS antenna power is being fed from my BG7TBL GPSDO, the RF splitter has a DC block on the ZYT port so it thinks the antenna is not connected.

kj7e:
Attaching the manual.

videobelu:
I i have the model with Symmetricom unit, i send some photos....do you have some suggestion to use Lady Heather with thi unit?
I tried to use it and apparently it works, but after a while the system hangs and I have to turn off the GPSDO to restart it .....

EV:
Right click the Lady Heather icon. Choose propeties, write /is after object exe file. After that Lady Heather does not send anything to gps unit and it works ok.

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