Tektronix DM505 Instruction Manual page 66

DC CURRENT
CHECK POWER SUPPLIES
K='
CHECK DC VOLTS
'=-+
CHECK THAT TEST LEADS
ARE
CONHECTED TO LOW AND mA
FUSE F1521
CHECK FOR A
DC
V O L T A G E A T ADC
INPUT (U3201-15) THAT
C O R R E S P O N D S T O
EXPECT ED 'READING.
FULL SCALE INPUT
CURRENT ON
AMY DC
C U R R E M T
R A N G E
S H O U L D P R O D U C E
200
mV DC
ATY1201-15.
I
VOLTAGE
A T W1201-15
CORRECT S 2 X 4 , 5, 6
r n w r C n L
i
CONVERTED DC
CHECK SWITCHES
VOLTAGE (0.2
V
F.S.) BETWEEN CURRENT
PRESENT AT INTlFm
<
S H U N T S AND ADC
SWITCH S3-,
I
C H E C K C U R R E N T
SHUMTS R1425, R1426,
AND R1521. CHECK
INPUT SWITCHING FDR
THE SHUNTS.
ALSO
CHECK
PROTECT10N
B R I D G E D I O D E S
CR1621.
flg.
8-6.