Tektronix SPG8000A, User Manual

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140 SPG8000A User Manual
•
LTC+ input : This readout displays the minimum and maximum raw
ADC values of the positive LTC input.
•
LTC- input : This readout displays the minimum and maximum raw
ADC values of the negative LTC input.
•
REF Board
: Placeholder
• Tune : This readout should be ignored.
•
Phase Detect : Placeholder.
•
Reference Module voltages : These readouts display the voltages of the
Reference module. The status for each voltage displays OK when the
voltages are within the operating range; the status displays WARN when a
voltage is out- of - range.
SDI Module diagnostic
readouts
Figure 50 shows the diagnostic information for the SDI Module.
Figure 50: SDI Module diagnostic readouts
These diagnostic readouts are shown for the SDI module:
•
Temperatures : This readout displays the temperatures of the SDI board
and the FPGA in degrees C.
•
PLL Status : This area displays information about the clocks used to
generate SDI signals (Option SDI only):
o
Flex0 : This readout indicates the state of the flexible clock
generator for output channel 1 (SDI 1A and SDI 1B connectors).
This readout should show Lock (locked). An Unlk (unlocked)
reading might indicate a problem with the Option SDI board or
with the in strument.
o
Flex1 : This readout indicates the state of the flexible clock
generator for output channel 2 (SDI 2A and SDI 2B connectors).
This readout should show Lock (locked). An Unlk (unlocked)
reading might indicate a problem with the Option SDI board or
w ith the instrument.