Maintenance
54
P6467 High-Speed Probe Adapter Instruction Manual
Theory of Operation
The P6467 probe acquires data through two flexible leads at J300 and J400. The
data flows through a compensation network before being passed on to the 92A96
probe cables at J100 and J200.
In addition to acquiring data at J400, the probe also acquires a master clock
signal (B_Clock). The clock signal passes through a delay line at J8 and J7. The
cable delays the clock transitions relative to the data transition to meet the setup
and hold timing of the logic analyzer. The amount of delay depends on the length
of the cable between J7 and J8. The clock signal passes to jumpers J2 and J4
where the user selects the normal mode (NORM) or divide-by-two mode (DIV2).
The clock signal is distributed to the probe cables at J100 and J200 depending on
the settings of jumpers J3 and J1. You can also use the clock signal to drive other
P6467 probes by connecting clock cables at J9 and J10.
The position of jumper J1 (EXT/MSTR CLK) lets you drive the probe cable
connected to J200 by the Master clock or by a an external clock signal (from
another P6467 probe) connected to J6.
The position of jumper J3 (CLK_A/MSTR CLK) determines the clock signal
sent to the probe cable at J100. When the jumper is in the MSTR CLK position,
the Master clock is sent to J100. When the jumper is in the CLK_A position. the
clock signal (A_Clock) from the flex cable at J300 is sent to the probe cable
connected to J100.
For any other P6467 probes that do not acquire any clock signals, the data passes
from the flex leads through the probe to the 92A96 probe cables.
Two fuses protect the power supply voltages of the probe. Fuse F1 monitors the
+5 V line and Fuse F2 monitors the –15 V input which becomes the –5 V line on
the probe. The part numbers of the fuses are listed in Replaceable Parts.
Summary of Contents for 070-9176-00
Page 5: ......
Page 13: ...Service Safety Summary viii P6467 High Speed Probe Adapter Instruction Manual ...
Page 39: ...Operating Basics 24 P6467 High Speed Probe Adapter Instruction Manual ...
Page 45: ...Reference 30 P6467 High Speed Probe Adapter Instruction Manual ...
Page 49: ...Specifications 34 P6467 High Speed Probe Adapter Instruction Manual ...
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Page 65: ...Adjustment Procedures 50 P6467 High Speed Probe Adapter Instruction Manual ...
Page 77: ...Replacable Parts 62 P6467 High Speed Probe Adapter Instruction Manual ...
Page 81: ...Appendix B P6467 Test Board 66 P6467 High Speed Probe Adapter Instruction Manual ...
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