Channel Isolation - Tektronix 5D10 Service Manual

Equipment Required : (Numbers correspond to those listed in Table 5-3, Test Equipment .)
1 . Oscilloscope Mainframe
7. Power Module Mainframe
5 . Low-Frequency Oscillator
10 . Coaxial Cable
D1 . CHANNEL ISOLATION PRELIMINARY
D2 . CHECK DISPLAY-RELATED AND INPUT-
SETUP RELATED SIGNAL ISOLATION
a . Perform the Adjustment and Performance Check Initial
NOTE
Setup and Power-Up Sequence procedure, which appears
at the beginning of Part II-Adjustment and Performance
First perform step D1, then proceed.
Check.
10
b . Refer to Section 6, Instrument Options, and to the
Change Information section at the back of this manual for
any changes which may affect this procedure.
c. Set the 5D10 controls as follows:
VOLTS/DIV (CH 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
VOLTS/DIV (CH 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
ACQUISITION AND DISPLAY . . . . . . . . . . . . . . . . . . . CH 1
Coupling (CH 2) . . . . . . . . . . . . . . . . . . . . GND (pressed in)
TRIGGERING
POSITION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FREERUN
SLOPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . / (pressed in)
SOURCE . . . . . . . . . . . . . . . . . . . . . . . . . CH 1 (pressed in)
SECONDS/DIV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1 m
STORAGE
VIEWTIME . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MIN
All other pushbuttons . . . . . . . . . . . . . . . . . . . . Off (released)
® . CHANNEL ISOLATION
I I I I I I I I I I I V 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 V I I I 1 1 1 1 1 1 1 V I I I 1 1 1 1 1 1 1 1 1 1 ! 1 1 1 I I I V I I 1 1 1 1 1 1 1 1 1 H i I I 1 1 1 ! 1 1 1 V I I I I I V 1 1 1 1 1 1 1 1 1 1 1 1 V 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ! 1 1 1 1 ! 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 I I I I I I I I I I I I 1 1 1 1 1 1 1 1 1 1
Shaded lines identify Performance Requirement CHECK.
III IIIIT111111111T1111111T1111111IT111!11111111111111!111111111111IT1111111111111111111111111111111111111111111111111111111111111!11111111111111111111111111111111111111IT11111111111111
Calibration Part II-5D10 Volume 1
Adjustment and Performance Check
D2 . SETUP CONDITIONS
5D10 Controls :
Make no changes to the control settings .
Low-Frequency
Oscillator
I
Coaxial
Cable
Test Equipment Controls :
Oscilloscope
Mainframe
CH1
Ll
5D1D
F
~-
Low-Frequency Oscillator
Frequency Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . 2 .5
Multiplier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X100K
Step Attenuator . . . . . . . . . . . . . . . . . . .All buttons released
3697-110
a . Set the low-frequency oscillator Var Attenuator control
to display a signal amplitude of 5 divisions al 250 kHz .
b . Set the CH 1 VOLTS/DIV switch to 0 .5 .
c . Set the ACQUISITION AND DISPLAY to CH 2 .
1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111!III111111111111111111111111IIIIIIIIIIIIIIII11111111111111 II1111111111111111111111111111111
d . CHECK-that the displayed signal amplitude is 0.2
division or less .
IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII!
e . Release the CH 2 GND button .