VI-700 V&l Source
5
Chapter 3
OPERATION
OPERATION
3.1 Initial Inspection and Setup
This instrument was carefully inspected before ship-
ment. It should be in proper electrical and mechani-
cal order upon receipt.
An
OPERATING GUIDE,
shown in Figure 2.1, is
attached to the bottom of the instrument to provide
ready reference to specifications.
3.2 Power
3.2.1 AC Line Operation
For a line powered unit, connect the VI-700 to a
sounded power outlet. Operation at either 110 or 220
Vac is possible by selecting internal straps. Press the
PWR
switch which is push-on push-release button;
the
PWR
LED indicator will light.
3.3 Operation Mode: Local or Remote
Operation of the VI-700 Precision Voltage and Cur-
rent Source is straightforward and is graphically indi-
cated on the front panel.
1. Plug the unit into a sounded ac outlet.
2. Pull out and set the handle for convenient
operation.
3. Turn on the
PWR
switch. The
PWR
lamp
(as wll as the
READY
and
LOCAL
lamps
if present with the IEEE-488 option) should
come on.
3.3.1 Local Operation
1.
Set the
CNTRL MODE
switch to
LOCAL,
i.e. pointing to the thumbwheel switches. The
associated
LOCAL
lamp (if present with
IEEE-488 option) should come on. For units,
without a remote programming option, this
switch has no effect.
2. Program the output level manually as
described in subsection “Setting of Output
Level” below.
3.3.2 Remote Operation, Optional
The VI-700 provides convenient optional remote con-
trol operation through a choice of optional IEEE-488
bus control or a parallel BCD signal input.
Optical isolation allows the outputs to be floating and
gives the user the option of using the voltage and cur-
rent outputs in either polarity. They may also be tied
to the ground terminal on the front panel.
3.3.2.1 IEEE-488 Control
The VI-700 includes a
REMOTE/LOCAL
switch
on the front panel. The
REMOTE
position is a re-
mote
enable
. When in
LOCAL
mode, the VI-700
supplies the output value selected using the front panel
thumbwheel switches.
When the switch is in the
REMOTE
position, the
VI-700 will supply the remote output value
only if
that option asserts remote control. If the option does
