TM 11-6625-3145-14
Verification and Adjustment Procedures-318/338 Service
5. Probe Compensation for the P6107 External Clock Probe
Equipment Required
None
If you are using a standard 318 Logic Analyzer you will have one P6107 probe labeled External Clock Probe. This probe
needs to be compensated to 20 pF according to the procedure described in Section 3:
Operating Instructions
. See the
Probe Compensation
paragraph in the Diagnostic Test Descriptions.
Two nearly identical P6107 probes are supplied with the 318S1 Logic Analyzers; one is the External Clock Probe, and the
other is the Serial Data Acquisition Probe. If the probes were supplied as original equipment, they will be labeled as either
EXT CLOCK, or SERIAL DATA with a sticker on the compensation box. The External Clock Probe is compensated to 20
pF, and the Serial Data Acquisition Probe is compensated to 40 pF.
If you have purchased replacement probes, or if you are adding the 318F1/338F1 Serial Analysis/RS-232C/NVM upgrade
kit to a standard 318, you need to choose which probe will be the External Clock Probe and adjust the compensation
accordingly. Probes supplied from the factory are compensated to 40 pF.
The P6107 Serial Data Acquisition Probe has been factory compensated (40 pF) and sealed with a CALIB. sticker.
Recompensation must be performed by qualified service personnel only. It is not necessary to compensate this probe.
We recommend that you install the colored marker band (supplied) on the probe for identification purposes.
If the P6107 External Clock Probe is a replacement the compensation must be altered. Remove and discard the CALIB.
sticker. Then perform the probe compensation procedure described in the
Operating Instructions
section (section 3) of
this manual. (See Probe Compensation under Diagnostic Test Descriptions.) We recommend that you install the colored
marker band (supplied) on the probe to help in identification.
6. Adjust EXT CLK
↑
and EXT CLK
↓
Delay
Equipment Required
1.
Oscilloscope Tektronix 7904 with plug in units 7A26, 7B80, and 7B85.
1.
Pulse Generator Tektronix PG502
1.
BNC 50
Ω
termination
1.
BNC T-connector
2.
BNC male to Probe tip Adapters
1.
2 SQR-pin to Probe tip Adapter
Figure 5-18. shows the test equipment setup for the Clock Delay adjustment.
Refer to Figures 5-18 and 5-19.
5-30
Summary of Contents for 318
Page 119: ...318 VERIFICATION AND ADJUSTMENT PROCEDURES ...
Page 182: ...338 VERIFICATION AND ADJUSTMENT PROCEDURES ...
Page 253: ...318 ___________________ TROUBLESHOOTING TREES ...
Page 344: ...338 TROUBLESHOOTING TREES ...
Page 517: ...TM 11 6625 3145 14 318 338 4434 923 318 Block Diagram ...
Page 518: ...TM 11 6625 3145 14 318 338 4434 924 338 Block Diagram ...
Page 519: ...TM 11 6625 3145 14 318 338 4434 925 318 Acquisition Module Wiring Diagram ...
Page 520: ...TM 11 6625 3145 14 318 338 4434 926 318 338 Mainframe Wiring Diagram ...
Page 521: ...TM 11 6625 3145 14 318 338 4434 926 338 Acquisition Module Wiring Diagram ...
Page 522: ...TM 11 6625 3145 14 318 338 4434 928 Figure 9 1 318 A01 Input A Board Component Locations ...
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Page 528: ...TM 11 6625 3145 14 Figure 9 3 318 338 A03 ACQ Control Board Component Locations ...
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Page 542: ...TM 11 6625 3145 14 Figure 9 8 318 338 A10 CRT Board Component Locations ...
Page 544: ...TM 11 6625 3145 14 Figure 9 9 318 338 A11 Inverter Board component Locations ...
Page 546: ...TM 11 6625 3145 14 Figure 9 10 318 338 A12 Regulator Board Component Locations ...
Page 551: ...TM 11 6625 3145 14 Figure 9 12 338 A01 Input A Board Component Locations ...
Page 553: ...TM 11 6625 3145 14 318 338 SERVICE ...
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