Front Panel Operation
2-21
2.5.2 Volts configuration
The following information explains the various configura-
tion options for the volts function. The configuration menu is
summarized in Table 2-8. This menu is accessed by pressing
CONFIG and then V. Paragraph 2.3.5 summarizes the rules
for navigating through the menu structure.
Note that a function does not have to be selected in order to
be configured. When the function is selected, it will assume
the programmed status.
GUARD
The GUARD option is used to enable or disable guard. When
disabled, the inner shell (shield) of the triax connector (and
cable) is connected to meter input LO. This mode is used for
unguarded voltage, current and charge measurements. When
enabled, the inner shell (shield) of the triax connector (and
cable) is connected to guard, which follows the potential of
meter input HI. This mode is used for guarded voltage mea-
surements. Guarding is explained in paragraphs 2.4.4 and
2.5.4.
Guard is only in effect when the instrument is in the volts
function. In any other function, guard is not used. The fol-
lowing menu items are used to control GUARD:
ON: Enable guard
OFF: Disable guard
Table 2-7
CONFIGURE VOLTS menu structure
Menu item
Description
GUARD
Enable or disable guard.
EXT-FDBK
Enable or disable external feedback mode.
SPEED
NORMAL
FAST
MEDIUM
HIACCURACY
SET-SPEED-EXACTLY
SET-BY-RSLN
Measurement speed (integration time) menu:
Select 1 PLC (power line cycle, 16.67msec for 60Hz, 20msec for 50Hz and 400Hz).
Select 0.01 PLC.
Select 0.1 PLC.
Select 10 PLC.
Set integration in PLC (0.01-10).
Default to setting appropriate for resolution.
FILTER
AVERAGING
TYPE
NONE
AVERAGING
ADVANCED
AVERAGING-MODE
MEDIAN
DISABLE
ENABLE
Filter menu:
Configure digital averaging filter:
Select type of average filter:
No average filtering performed.
Program a simple average filter (1-100 rdgs).
Program a simple average filter (1-100 rdgs). with noise tolerance window (0-
100% of range).
Select moving average or repeating average mode.
Configure median filter:
Disable median filter.
Enable median filter and specify range (1-5).
RESOLUTION
AUTO
3.5d, 4.5d, 5.5d, 6.5d
Display resolution menu:
Default to resolution appropriate for integration time.
Select a specific resolution.
