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CALIBRATION
8.
RANGE DC VOLTS, +DC
a.
RANGE DC VOLTS. +DC
error: ±2%. max
Check RANGE DC VOLTS accuracy as indicated on
570 meter. Check +DC accuracy on test meter at
DC+ test jack.
RANGE
+DC
DC
operating
VOLTS
voltage
700
300; ±2%. max
350
300; ±2%. max
350
200; ±2% . max
350
100; ±.5%. max
140
100; ±.5% . max
140
100
570 meter
indication
error: ±2%. max
300
300
200
100
100
Adjust VAdc for 70v test meter reading.
70
100
70
50
70
Adjust VAdc for 35
v
test meter reading.
35
50
35
20
35
Adjust VAdc for 14
v
test meter reading.
14
20
14
Adjust VARIABLE +dc for 7 v test meter reading.
7
20
Set VAdc to CALIBRATED
140
50; ±2%. max
140
20; ±2%. max
9.
-DC
a .
-DC range
7
o
to -100v
Set INDICATION to -DC. Vary -DC thru it's range
and note indication from 0 v to at least -100 v on
test meter and 570 meter.
TEK 570 FCP
2-5-64
NOTES
Sa.
570 meter indicates more than ±2% error
(1)
Trouble may be either a bad meter or meter
series resistor
Sa.
7 v can't be made when VARIABLE
.
: jc
full
ccw
(1)
Pick V525 6ANS.
(2)
Change V540 12AT7
(3)
Recheck DC+ for exactly +lOOv.
(4)
Recheck -150v.
570
CALIBRATION
13
Summary of Contents for 570
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