HP 4145A Operation And Service Manual page 41

SECTION III
Model 4145A
6
6
D Voltage Monitor (Vm) Input Connectors :
@ COM (COMMON)-GROUND Terminals :
Two female BNC connectors for input to
Vml and Vm2. Used in applications in which
a user-faQricated test fixture is used. These
connectors cannot be connected to the
16058A Test Fixture. Maximum allowable
input voltage is +2OV de.
3 Voltage Source (Vs) Output Connectors :
Two female BNC connectors for Vsl and
vs2. Used in applications in which a
user-fabricated test fixture is used. These
connectors cannot be connected to the
16058A Test Fixture. Maximum output
voltage is +2OV dc.
3 SMU Output Connectors:
Four triaxial connectors for SMUl through
4. Can be connected to the 16058A Test
Fixture or to a user-fabricated test fixture.
Each connector outputs or measures up to
+lOOV or *lOOmA.
Common (+) and Ground (A) for floating
and grounded measurements. The common
terminal is
tied directly to the
outer-conductor of the Vm @ , Vs @ , and
SMU @ connectors; the ground terminal is
tied directly to the instrument chassis. For
grounded measurements, these terminals
must be interconnected using the shorting-
bar. For floating measurements, disconnect
the shorting-bar.
WARNING
A POTENTIAL SHOCK HAZARD
MAY EXIST WHEN COMMON IS
NOT CONNECTED TO GROUND
~;ES;;G-BAR DISCO N-
DO NOT,
REGARDLESS OF THE OUTPUT
VOLTAGE, TOUCH THE
COMMON
TERMINAL OR
OUTER CONDUCTOR OF THE
SMU, Vs, OR Vm CONNECTORS
DURING A FLOATING MEA-
SUREMENT
(SHORTING-BAR
DISCONNECTED).
Figure 3-3. Rear Panel Features (Sheet 1 of 2).
3-8