Model 2790 SourceMeter
®
Switch System User’s Manual 4-3
CAUTION For the Model 7751/7753, be sure that the thermal pad is not dislodged.
Also be sure to use the correct cover with the integral heat sink to
assure proper voltage source operation. Note that earlier 7751 modules
do not have the pad or heat sink.
Figure 4-1
Screw terminal access
Cabling requirements
General requirements — Cable wires should be mechanically durable, preferably
20AWG or larger with a high voltage insulation, such as rubber or silicon, good for at least
1000V.
It is the responsibility of the user to use the size and type of cable wire that best suits your
needs. Keep in mind that Teflon insulated wire performs better in high humidity condi-
tions, but it is not recommended when subjected to mechanical movement, like a device
handler.
Recommended cable wire — Beldon
8899 cable wire, which is stranded 18AWG in
size, with a thick rubber insulation rated for 5000V working voltage. It is very flexible and
mechanically durable.
NOTE The use of an outer protective cable shield is recommended to prevent damage to
the wire insulation. It should preferably have a foil shield tied to earth ground
on one end to provide an extra layer of protection in the event that a wire
conductor becomes exposed. It will also serve to reduce measurement noise
caused by nearby machinery. A recommended cable shield is available from
Zippertubing
and covered later in this section.
U
N
L
O
C
K
LOCK
GUARD
SOURCE SENSE SRC
HI
SRC
HI
SRC
LO
SRC
LO
SEN
HI
SEN
HI
SEN
LO
SEN
LO
A
A
BANK 1
BANK 2
B
B
HI HI
LO LO
HI
SRC
HI
SRC
LO
SRC
LO
SRC
HI
SEN
HI
SEN
LO
SEN
LO
SEN
A
A
LO
I / V
GUARDISOURCEVSOURCEINTERLOCK
OUT
HIGNDGND HI
IN
LOLO
BANK 4
BANK 3
I / V
B
B
Conductive
Thermal
Pad
Heat Sink
(Underneath)
To Next Page
Loading...
Need help?
General
