Tektronix 2246 1Y, Руководство по обслуживанию

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Performance Check Procedure—2246 1Y and 2246 Mod A Service
INDEX TO PERFORMANCE CHECK
PROCEDURE
DISPLAY
1. TRACE ROTATION .................................... 4 -5
2. G e o m e try ..................................................... 4-5
VERTICAL
1. Input COUPLING Functional Check . . . . 4 -6
2. CH 1 and CH 2 VOLTS/DIV
Trace S h ift................................................... 4 -6
3. CH 3 and CH 4 VOLTS/DIV
Trace S h ift................................................... 4-7
4. CH 1 and CH 2 VAR VOLTS/DIV
Trace Shift ................................................. 4-7
5. CH 1 and CH 2 Input COUPLING
Trace S h ift................................................... 4-7
6. CH 2 INVERT Trace Shift ..................... 4-7
7. CH 1 and CH 2 VAR VOLTS/DIV
R ange............................................................4-7
8. Low Frequency Linearity ..................... 4-8
9. CH 1 and CH 2 Vertical Deflection
Accuracy ................................................... 4-8
10. CH 3 and CH 4 Vertical Deflection
Accuracy ................................................... 4-8
11. ADD Mode and CH 2 INVERT
Deflection A c c u r a c y ..................................4-9
12. Vertical POSITION Range
(all channels) .............................................4-9
13. CH 1 to CH 2 Signal Delay Match . . . . 4-10
14. CH 1 to CH 4 Signal Delay Match . . . . 4-10
15. CH 3 to CH 4 Signal Delay Match . . . . 4-10
16. CH 1 and CH 2 Vertical Bandwidth . . . 4-10
17. CH 3 and CH 4 Vertical Bandwidth . . . 4-11
18. CH 1 and CH 2 A b e rra tio n s...................4-11
19. SCOPE BW (Bandwidth Limit)
Accuracy ................................................. 4-11
20. Com m on-m ode Rejection Ratio . . . . 4-12
21. Channel Isolatio n ............................
4-12
22. AC-Coupled Lower -3 dB Point . . . . 4-13
23. Vertical ALT and CHOP Modes ............ 4-13
24. BEAM FIND Functional Check ........... 4-13
25. A and B Trace S e p a ra tio n ..................... 4-13
TRIGGERING
1. 500 Hz Trigger Sensitivity ..................... 4-14
2. 500 kHz Trigger Sensitivity ...................4-15
3. 25 MHz Trigger S e n s itiv ity ..................... 4-15
4. 100 MHz Trigger S e n s itiv ity ...................4-15
5. 100 MHz NOISE REJ Trigger
S ensitivity................................................... 4-16
6. Single Sweep Mode ............................ 4-16
7. Trigger LEVEL Control Range ........... 4-16
8. TV Field Trigger S ensitivity................. 4-17
9. TV Line Trigger Sensitivity ................. 4-17
10. Line Trigger Functional C h e c k ........... 4-17
HORIZONTAL
1. A and B Sweep Length ..................... 4-18
2. Horizontal POSITION Range ............... 4-18
3. VAR SEC/DIV Range
.......................... 4-18
4. Magnifier R e g istra tio n .......................... 4-19
5. A and B Timing Accuracy
and Linearity ......................................... 4-19
6. A and B Magnified Timing
Accuracy ............................................... 4-19
7. Delay Time J it t e r .................................. 4-20
8. Delay Time Accuracy .......................... 4-21
9. Delay Time Position R ange................. 4-21
10. X-Axis Gain Accuracy ....................... 4-21
11. X -Y Phase D iffe re n ce .......................... 4-22
12. X-Axis Bandwidth ................................ 4-22
TIME AND CURSORS MEASUREMENTS
1 . I « -
s e c
-»I a n d N- 1 /SEC -»| C u rs o r
Accuracy ............................................... 4-23
2. Delta Time Accuracy ....................... 4-23
3.
PHASE
-M Cursor A c c u ra c y ............ 4-24
4.
k - VOLTS
-»l Cursor A c c u ra c y ............ 4-24
5. ib
VOLTS
-H Cursor Accuracy .......... 4-24
6. Tracking Cursors Position Accuracy . 4-24
CH1/CH2 VOLTMETER MEASUREMENTS
1. DC Volts Accuracy .............................. 4-25
2. DC Volts Normal Mode
Rejection R a tio ....................................... 4-25
3. +Peak, - Peak, and Peak-to-Peak
Volts Accuracy .................................... 4-26
4. 25 MHz +Peak, -Peak, and
Peak-to-Peak Volts A c c u r a c y ........... 4-26
5. 100 MHz +Peak, -Peak, and
Peak-to-Peak Volts A c c u r a c y ........... 4-26
6. Gated Volts A c c u ra c y .......................... 4-26
EXTERNAL Z-AXIS AND PROBE ADJUST AND
FRONT-PANEL SETUP FUNCTIONS
1. Check External Z-Axis Input ............. 4-28
2 . PROBE ADJUST Output .................. 4-28
3 . Run MAKE FACTORY SETTINGS
R o u tin e ................................................... 4-28
4-4