Performance Check/Calibration—Type 422 AC-DC
26. Check/Adjust Channel 2 Volts/Division Page 5-21
Switch Compensation (C103B, C103C,
C104B, C104C, C105B, C105C, C106B,
C106C,Cl 12)
REQUIREMENT: Optimum square corner and fla tto p
within +3% or —3% with total peak-to-peak aberrations not
to exceed 3% at each Channel 1 VOLTS/DIV switch
position.
PERFORMANCE: Correct
____
; incorrect (list excep
tions)
_____________________________________________
27. Check/Adjust High-Frequency Compen- Page 5-22
sation (C237, L245, L255, R237)
REQUIREMENT: Optimum 100 kilohertz square-wave
response at .05 VOLTS/DIV within +0.15 or —0.15 division
with total peak-to-peak aberrations not to exceed 0.15
division).
PERFORMANCE: Correct
___
; incorrect.
____
28. Check Upper Vertical Bandwidth Limit Page 5-23
of Channel 1 and 2
REQUIREMENT: Not more than —3 dB at 15
megahertz.
PERFORMANCE: —3 dB point,
___
megahertz.
29. Check Channel 2 X10 Gain Upper Page 5-24
Vertical Bandwidth
REQUIREMENT: Not more than —3 dB at five mega
hertz.
PERFORMANCE: —3 dB point,
___
megahertz.
30. Check Common-Mode Rejection Ratio Page 5-24
REQUIREMENT: 100:1 or greater at 50 kilohertz.
PERFORMANCE: Correct
___
; incorrect
____
_
31. Check AC-Coupled Lower Vertical Page 5-24
Bandwidth Limit
REQUIREMENT: Channel 1 and 2 (XI gain), not more
than —3 dB at two hertz. Channel 2 only with X I0 GAIN
AC switch pulled out, not more than —3 dB at five hertz.
PERFORMAN CE: X I gain: Correct
_____
;
incorrect
_____
X10 gain: Correct
_______
; incorrect
____
32. Check Channel Isolation Ratio Page 5-25
REQUIREMENT: 10,000:1 or greater.
PERFORMANCE: Correct
___
; incorrect_____
33. Adjust Channel 1 Only Triggering DC Page 5-25
Level (R57)
REQUIREMENT: Zero volts within 50 millivolts output
from the Channel 1 Trigger Pickoff stage.
PERFORMANCE: W ithin
____
millivolts.
34. Adjust Internal Trigger Compensation Page 5-25
(C217, C353)
REQUIREMENT: Optimum square-wave response
through internal trigger pickoffs for CH 1 & 2 and CH 1
triggering.
PERFORMANCE: Correct
-----
; incorrect
--------
35. Adjust External Trigger Compensation Page 5-26
(C302)
REQUIREMENT: Optimum square-wave response for
external trigger signals from TRIG IN connector.
PERFORMANCE: Correct
___
; incorrect
____
_
36. Check High-Frequency Triggering Oper- Page 5-27
ation
REQUIREMENT: Internal, stable display in the AC, AC
LF REJ and DC TRIGGERING Coupling switch positions
for the CH 1 and CH 1 & 2 TRIGGERING Source switch
positions with the TRIGGERING Mode switch set to
AUTO and NORM; check with 0.2-division display at five
megahertz and one-division display at 15 megahertz.
External, stable display in the AC, AC LF REJ and DC
TRIGGERING Coupling switch positions for the EXT
TRIGGERING Source switch position with the TRIGGER
ING Mode switch set to AUTO and NORM; check with
0.125-volt signal at five megahertz and 0.6-volt signal at 15
megahertz.
PERFORMANCE: Correct
___
; incorrect (list excep
tions)
____________________________________________
_
37. Check Low-Frequency Triggering Oper- Page 5-28
ation
REQUIREMENT: Internal, stable display in the AC and
DC TRIGGERING Coupling switch positions for the CH 1
and CH 1 & 2 TRIGGERING Source switch positions with
the TRIGGERING Mode switch set to AUTO and NORM;
check with 0.2-division display at 50 hertz. External,
stable display in the AC and DC TRIGGERING Coupling
switch positions for the EXT TRIGGERING Source switch
position with the TRIGGERING Mode switch set to AUTO
and NORM; check with 0.125-volt signal at 50 hertz.
PERFORMANCE: Correct
___
; incorrect (list excep
tions)______________________________________________
5-5
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