Tektronix 570, Manual

Page: 122 / 134

CALIBRA TION
20 . VOLTS/DIV, VOLTS/STEP
a. Setup
VOLTS/STEP 10
HORIZONTAL VOLTS/DIY
10
b . R227
Adjust R227 (HORIZONTAL VOLTS/DIV switch) for
one dot per major graticule division.
c.
Interaction·
Hor Gain, Volts/Step Adj, and R227 adjustments in­
teract; repeat as necessary.
d.
VOLTS/STEP-VOLTS/DIV comparison
diff: ±3% , max
Check all positions of VOLTS/STEP against HORI­
ZONTAL VOLTS/DIV as follows:
HORIZONTAL dots/div
VOLTS/STEP VOLTS/DIV
±3%, max
. 1
.2
.5
1
2
5
10
10
10
21. START ADJUST
a.
Setup
. 1 1
.2 1
.5 1
1 1
2 1
5 1
10 1
20
2
50 5
HORIZONT AL GRID
b.
HORIZONTAL VOLTS/DIY
1
ST ART ADJUST
ccw
VOLTS /STEP
1
ST AR T ADJUST
range: 7 dots
With START ADJUST full ccw, the first dot must be
to the left of graticule center.
With START ADJUST full cw, there must be at least
6 steps (7 dots) to the right of graticule center.
Ad just the START ADJUST knob so it
t
s index points
to "0" on the front panel when the first dot is at
graticule center.
18
570 CALIBRATION
NOTES
2-5-64
TEK 570 FCP