Fluke 5700A Series II Operator's Manual page 75

E
x
(External Guard)
F
w
(Wideband)
1
Table 3-1. Front Panel Features (continued)
External Sensing should be used in the dc voltage function when the UUT
draws enough current to produce a significant voltage drop in the cables,
and in the resistance function when the UUT has a four-wire ohms input and
the calibrator is set to 100 kΩ or less. External sensing can also be used in
conjunction with the two-wire compensation circuit to compensate for lead
resistance at the UUT terminals. Refer to "When to use External Sensing,"
"Four-Wire vs. Two-Wire Resistance Connections," and "Cable
Connections" in Chapter 4 for external sensing instructions.
Opens and closes an internal connection between V GUARD (voltage guard)
and OUTPUT LO. The calibrator powers up with the voltage guard internally
connected to OUTPUT LO and the EX GRD indicator off. Toggling
disconnects OUTPUT LO from the voltage guard.
The V GUARD binding post provides an external connection point for the
voltage internal guard. For a UUT with floating inputs, the V GUARD should
be connected to LO internally. (
the GUARD may be externally connected to the grounded UUT input.
x
( is on.) See Chapter 4 for instructions.
Toggles the Wideband AC Voltage Module (Option 5700A-03) and sets the
calibrator to standby. When enabled, the ac voltage output from 10 Hz to
30 MHz is available at the front-panel coaxial connector. Wideband is
disabled whenever W BND is toggled off or when another function (such as
current) is selected. Chapter 4 contains more information.
3 5
4 6
Figure 3-1. Front Panel Features
x
is off.) For a UUT with a grounded input,
2
Features 3
Front Panel Features
x
on
3-5