ILX Lightwave LDX-3207 User Manual

mode o,f operation is activated in response to commands sent
to the
3207 via the interface. Once in REMOTE mode, the
output cur rent level
is determined by appropriate commands
sent over the CPIB/IEEE-488 bus. For example, the cmand
'CSO.01' will cause the output of the 3207 to go to 50.01 m4
to within the control accuracy of the interface. In this mode
of operation the main current adjustment knob and MOD input
are disabled. The
3207 may be returned to LOCAL mode by
rnomentari ly pressing the
LOCAL button. For more informat ion
on the REMOTE mode of operation refer to Chapter
3.
2.10
Output Connectors
The front panel output connectors supplied with the
LDX-3207 are
two standard binding posts on
0.75 inch centers. Current flows out
of the red connector and returns via the black connector. These
output connectors are fully floating with respect to the chassis
ground.
2.11 Output Off/On Button
The output off/on switch
is located just to the left of the output
terminals and
is used to turn the output of the 3207 off and on.
When the output
is active, the LED indicator just above the button
is lit indicating that current is flowing from the positive to
negative terminals. The off/on button has a toggling action: if the
ouput
is off, pressing it will cause the ouptut to come on, and vice
versa.
When the ouptut
is off, a low impedence shunt is active across the
output terminals. In this state
it is safe to connect or remove
sensitive devices from the
3207 even though power supply itself is
on. Turning the output on initiates a slow turn-on sequence that
takes a few seconds to complete. During this period, the impedence
of the internal shunt slowly increases diverting current through
the output terminals.
When the
3207 is first turned on, the off/on button is inhibited for
several seconds. This forces the internal, low impedence shunt to
remain active across the output terminals until the
3207 control
ci rcui
ts are stabi I ized. Additionally, there are two other
conditions that wi
l l automatical ly cause the output to reset to the
off state:
Power Drop-outs
- ,K line power drop-outs lasting more than
about
10 msec wi I I trigger an internal power monitor and
cause the output to switch unconditional ly to the off state.
This sequence
is also initiated when the 3207 is switched off
or unp
l ugged.
Open Circuit
- If the compliance voltage of the externally
connected circuit exceeds about
6 volts, the output is
switched to the off state and OPEN CKT indicator is activated.
Most commonly this occurs when the output off/on button
is
pressed without a load attached. (See also Section 2.13)
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ILX Lightwave LDX-3207 Specifications

General

Brand	ILX Lightwave
Model	LDX-3207
Category	Portable Generator
Language	English