Keithley 6430 Quick Results Manual page 17

10 Quick Results Guide
Figure 9
Basic guarded ohms measurements
Resistor
Network
I
G
R
G
³1k½
Remote guard programming
Table 2 lists the SCPI commands to select ohms and cable guard.
Triax Cable
Ohms
WARNING Guard is at the same voltage level as
Guard
HI
DUT
LO
HI
250V
PEAK PEAK
LO
4-WIRE
SENSE
(ENTER IEEE ADDRESS
WITH FRONT PANEL MENU)
Table 2
SCPI commands: ohms and cable guard
Command
:SYSTem:GUARd OHMS
:SYSTem:GUARd CABLe
*Keithley part number: CA-176-1D.
KEITHLEY
6430
REMOTE
PreAmp
input/output high. Therefore, if a
hazardous voltage (³42V peak) is
present on input/output high, it is also
present on the guard terminals of the
Remote PreAmp and mainframe.
Banana Plug Cable
6430 Mainframe (rear panel connectors)
WARNING:
WARNING:
NO INTERNAL OPERATOR SERVICABLE PARTS,SERVICE BY QUALIFIED PERSONNEL ONLY. NO INTERNAL OPERATOR SERVICABLE PARTS,SERVICE BY QUALIFIED PERSONNEL ONLY.
5V
PK
MADE IN
V, Ω,
U.S.A.
GUARD
5V
5V 250V
PEAK
PEAK
GUARD
SENSE
INPUT/
42V
OUTPUT
PEAK
IEEE-488
TRIGGER
LINK
RS232
CAUTION: CAUTION:
FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,REPLACE FUSE WITH SAME TYPE AND RATING.
FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,REPLACE FUSE WITH SAME TYPE AND RATING.
Description
Selects ohms guard mode.
Selects cable guard mode.
Preamp
Cable*
REMOTE
!
PreAmp
LINE FUSE
SLOWBLOW
2.5A, 250V
LINE RATING
100-240VAC
50, 60, HZ
100VA MAX
INTERLOCK-
DIGITAL I/O