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Operating Instructions
OPERATING FEATURES
2
2-5
Note that the VAC and mA AC functions are available only with the True RMS AC
option. If this option is absent, pressing the VAC and mA AC function buttons causes the
8842A to briefly display an error message (ERROR 30).
!
!
M
FUNCTION BUTTONS:
RANGE BUTTON:
DC Volts
AC Volts*
2-Wire Ohms
4-Wire Ohms
Display
HIGH and LO SENSE
Terminals for 4-Wire Ohms Only
HI and LO
INPUT Terminals
2A INPUT Terminal
(Houses 2A fuse)
FRONT/REAR switch selects
either front or rear inputs.
Calibration Functions
(embossed)
*Available with 8842A-09 True RMS AC only.
Gives error message if option not installed.
** For a description of the autorange feature,
see paragraph 2-14.
20 mV or 20
200 mV or 200
2V or 2 k
20 M
20V or 20 k
Autorange On/Off **
200V, 200 k or
200 mA dc
1000V dc, 700V ac,
2 M or 2000 mA
POWER switch turns 8842A
on or off. Also initiates
power-up self-test and
resets instrument to:
VDC function
Autorange
Slow reading rate
Continuous trigger
OFFSET off
Local (front panel) control
SPECIAL
FEATURES
CAL ENABLE switch
enables calibration
mode. (CAUTION! See text.)
DC Current
AC Current*
f2-05_1.wmf
Figure 2-5. Front Panel Features