789/787B
Calibration Manual
22
DC Millivolts Measurement Test
1. Put the calibrator in Standby (STBY) mode.
2. Put the UUT rotary switch in the
U position.
3. Connect the calibrator to the COM and
terminals on the UUT as shown in
Figure 8.
4. Apply the values from the calibrator shown in Table 9 and compare the readings on
the UUT to the acceptable readings shown.
POWER
I
O
0•
123
456
7 8 9
ENTER
M
k
m
V Hz
FIELD
EDIT
/
+
F
OPR EARTH EXGRD SCOPE MENU
PREV
SHIFT
RESET
CE
SETUP
REF
NEW
TC
MEAS
¡F
µ
n
p
W
dBm sec
¡CA
MULT
x
DIV
÷
MODES
MORE
STBY
HI
LO
TRIG
GUARD
TC
20A
NORMAL AUX
5520A CALIBRATOR
SCOPE
OUT
V, , ,
RTD
A, -SENSE,
AUX V
20V PK MAX
20V PK MAX
5522A
UUT
adm005F.EPS
Figure 8. DC mV Measurement Test Connections
Table 9. DC mV Test
Range Calibrator DC Voltage Minimum Reading Maximum Reading
No Range Switching 100 mV 99.7 mV 100.3 mV
No Range Switching 300 mV 299.5 mV 300.5 mV