TrueTime Symmetricom XL-DC GPS OCXO 10Mhz GPSDO Oscillator LCD Clock IRIG-B 1PPS [Refurbished]

Tested/Guaranteed • Upgraded OCXO Oscillator • Large Left LCD Time Display • 5V Antenna Power • GPS Disciplined 10MHz Oscillator • Atomic Clock Timecode Receiver • 10Mhz 5Mhz 1MHz Sine Wave Outputs • IRIG-B / 1PPS • 115V or 230V Power • RS-422 Input/Ouput

Actual item for sale

Description

Here's a lightly used TrueTime/Symmetricom XL-DC GPS time receiver/timecode generator in very good cosmetic condition. It is equipped with an upgraded OCXO oscillator. It has been tested for acquisition of GPS Sync and for good Time, Date, Timecode and Frequency outputs. The unit works as expected. I was unable to send and receive data using the DB9 serial port using my test PC's Hyperterminal application. On these units this usually indicates that the device has been optioned with the RS-422 serial protocol instead of the RS-232, so my PC's 3-wire serial card can't communicate. In any case, all the important parameters for the device are accessible via the front panel keypad, so the serial I/O is probably unnecessary for most applications. I have not explored the 86-729-15 expansion card for lack of documentation, but I do see its config options coming up on the front panel so I assume that it is working as it should. The internal Lithium memory back-up battery has just been replaced so that should not need further attention for some years. Both LCD displays have a backlight - which show a little ageing but which are nevertheless still very legible (see photos). Some small nicks and scratches have been touched up using color-matched paint so that the unit should look close to pristine when seen in a rack at a normal viewing distance.

A basic test antenna is included to get you started - so you may need to take both receiver and antenna into the open air to test the device. The Antenna voltage is 5V so almost any good quality GPS antenna should work, but try and have at least 26dB of antenna gain if you want to replicate my test results. A Symmetricom AT575 type is recommended and I usually have some listed separately. Rack ears are included as shown. No printed manual is included but a copy may be downloaded from the link below. No unpictured cables, accessories or documents are included.

Actual item for sale

Features

• Less Than 40 Nanoseconds rms Accuracy to UTC
• Better Than 1x10-12 Frequency Accuracy
• Versatile and Modular Architecture
• Supports Many Different Output Options
• 10Mhz, 5Mhz and 1MHz Sine Wave Outputs
• 1 PPS Output
• IRIG B Time Code Output