TM 11-6625-3145-14
Verification and Adjustment Procedures-318/338 Service
Two nearly identical P6107 probes are supplied with the 338S1 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/RS232C/NVM
upgrade kit to a standard 338, 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 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
1 Pulse Generator
1 BNC 50
Ω
termination
1 BNC T-connector
2 BNC male-to-Probe-tip adapters
1 2 SQR-pin-to-Probe-tip adapter
Oscilloscope Setup
1. Connect a 50
Ω
terminator to the pulse generator OUTPUT. Connect a BNC T-connector to the 50
Ω
terminator. Connect the oscilloscope channel 1 probe to one side of the BNC T-connector.
2. Connect the P6107 External Clock probe to the other side of the BNC T-connector.
3. Select the oscilloscope A time base, set the triggering source to channel 1, and the sweep rate to 5 ns/div
using X10 MAG, if necessary.
4. Set B DELAY MODE of the A time base to B STARTS AFTER DELAY, and set TRACE SEP to ON, then adjust
delta-T to 0.
5. Set the sweep rate of the B time base to 1 ns/div using X10 MAG if necessary.
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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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