GPS7 module troubleshooting
GPS7 module tr
oubleshooting
This section
contains instructions and procedures for troubleshooting the
GPS7 module. These procedures help you decide whether it is necessary to
replace your module.
If the TG8000 mainframe does not boot up or if the display is not working, refer
to the Mainframe troubleshooting section in this manual. (See page 2-10.)
Required equipment
The equipment listed b elow is needed to troubleshoot the GPS7 module.
Table 10-2: Equipment required for GPS7 module troubleshooting
Equipment Requirement Suggested equipment
TG8000 mainframe For the GPS7 module under test Tektronix TG8000
TG8000 mainframe with GPS 7 installed Fully functional, operating system, for
reference
Tektronix TG8000 with GPS7 module
Waveform monitor Used to verify correct GPS phase lock
operation. Must be able to lock to a
reference and display composite inputs
Tektronix WFM7120
GPS Antenna signal source (2) Good GPS s ignal required for both the
GPS7 under test and the reference unit.
If only one antenna feed is available, a
signal splitter may be used
Digital Multimeter Used to check power supply voltages and
fuses
Fluke 87 or equivalent
75 Ω BNC cables (4)
Length: 42 inches, used to connect the
instruments
Tektronix part number 012-0074-00
ROHS compliant ESD safe soldering
workstation
The GPS7 boards do not contain any
user-serviceable parts, but any soldering
must be RO HS compliant
Frequency Counter (optional) Used for an alternate m ethod to check
frequency accuracy
Fluke PM6685 or equivalent
10–8 TG8000 Multiformat Test Signal Generator Service Manual
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