Figure - Keithley 6430 Instruction Manual

Figure 2-3

Noise Shield
Four-wire sense
connections
Sense
Test
Fixture
Banana Plug Cable
WARNING
WARNING
Triax
Cable
LO
DUT HI
Triax
Cable
LO
Sense HI
Connect to earth safety
ground using #18 AWG
wire or larger
HI
250V
5V
PEAK PEAK
LO
4-WIRE INPUT/
SENSE OUTPUT
IEEE-488
(ENTER IEEE ADDRESS
WITH FRONT PANEL MENU)
CAUTION: CAUTION:
There is no direct internal connection between earth ground and the
INPUT/OUTPUT LO terminal of the SourceMeter. Therefore, hazardous
voltages (>30V rms) can appear on the LO terminal. Typically, this can
occur when the SourceMeter is operating in any mode where the output
changes rapidly, such as quick, pulsed waveforms that can be generated
using the ZERO, AUTO-OFF output state, or fast pulse sweep operations.
To eliminate the shock hazard, connect the INPUT/OUTPUT LO terminal
to earth ground. You can connect the LO terminal to the chassis ground
screw terminal on the rear panel using the supplied chassis ground plug, or
connect it to a known safety earth ground.
For floating source-measure operations, voltage will be present on the
outer shell (IN/OUT LO) of the triax cable(s). If IN/OUT LO is connected
to a noise shield as shown in Figures 2-2 and 2-3, the floating voltage will
also be present on the shield. To prevent contact with the floating voltage,
enclose the test circuit in a metal test fixture that is connected to safety
earth ground (as shown in Figures 2-2 and 2-3), and do not touch the triax
cable(s).
*Keithley part number: CA-176-1D.
KEITHLEY
6430
REMOTE
PreAmp
WARNING Guard is at the same voltage level as
input/output high. Therefore, if a
hazardous voltage (≥42V peak) is
present on input/output high, it is also
present on the guard terminals of the
Remote PreAmp and mainframe.
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
250V
PEAK
PEAK
GUARD
SENSE
42V
PEAK
TRIGGER
LINK
RS232
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.
6430 Mainframe
(rear panel connectors)
Connections
Preamp Cable*
REMOTE !
PreAmp
LINE FUSE
SLOWBLOW
2.5A, 250V
LINE RATING
100-240VAC
50, 60, HZ
100VA MAX
INTERLOCK-
DIGITAL I/O
2-7