5790B
Operators Manual
4-12
Re
set
EX
TR
I
G
TR
IG
INPUT 1
WI
DE
BAND
GUAR
D
IN
P
UT 2
22 mV
220
m
V
22 V
2.
2 V
220 V
2
.
2 mV
70 mV
7
00 mV
70 V
7 V
7
00 V
7 mV
1 kV
AUX
5790B EXT GRD
UUT Source
1
2
Use heavy braid
Input
Plane of reference
+/- 0.00050mV (1 year) 213 days since calibration
12/21/12 10:52am
External
Sense
OFF
External
Guard
OFF
Wideband
OFF
Setup
Menu
Standby
mV
0.00000
Auto Range 220 mV
Guard
3
+/- 3
%
(1
y
e
ar
) 83 days
since
calibration
2
/
0
6/15 10:52am
Set
R
eference
Set
u
p
M
enu
Auto Range 2.2 V
P
k-Pk
Statistics
Curr
ent
Shunt
Inpu
t 2
hvi031eps
Figure 4-2. Recommended Test Lead Connections to Test a Source
External Guard Connection
For some conditions, such as low-frequency common mode interference, use the
external guard configuration for better results. Push
to select external guard.
The Guard indicator on the display is lit. This disconnects the LO from GUARD
and connects the internal guard to the GUARD binding post. A connection from
the GUARD binding post can then be made to the common earth ground point for
the system.