GPS7 GPS Synchronization and Timecode modu le
To configure th
e GPS7 module
When you first receive your GPS7 module, there are a few things you need to do,
and a few things you should know, before putting it into service. This section
includes inf
ormation about the following:
Performing an internal frequency calibration
Understanding the GPS/GLONASS antenna system
Understanding signal quality
Understanding time flow
Configuring module settings
GPS7 module oven
calibra
tion procedures
If you are installing a GPS7 module into an existing TG8000 mainframe, it
is sugge
sted that you calibrate the mainframe oscillator oven as p art of the
installation and qualification process. If you have received your GPS7 module
already installed in a mainframe, you can set the internal frequency after putting
the module in its operating environment and allowing it to reach a stable operating
condition.
Information about the Oven Calibration menu is available in the GPS7 module
CAL OVEN submenu section. (See page 2-47.)
NOTE. Perform the mainframe internal fr equency calibration at least once a year
to c
ompensate for oscillator drift. With a GPS7 module installed, this calibration
can be done while the instrument is in service.
If y
our GPS7 module is installed in a TG700 mainframe, you need to a lso
characterize the oscillator frequency as a function of voltage. Refer to the TG700
User Manual for more information (Tektronix part number 071-1970-XX).
WARNING. Dangerous electric shock hazards exist inside the TG8000 mainframe.
Only qualified service personnel should perform these procedures. Failure to use
appropriate precautions can result in injury or death.
3–100 TG8000 Multiformat Test Signal Generator User Manual
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