4.5 Commands
4 – 49
Local Lockout
LOCK(?)
{
z
}
Set (query) the local lockout
{
to
z
=
(
LOCAL 0
,
REMOTE 1
,
LOCKOUT 2
)
}
.
The
LOCK
command provides control over user access to front-panel
control of the LDC500. When
LOCK
REMOTE
or
LOCK
LOCKOUT
, the
REM
indicator will be lit; in this state, the user cannot control any
instrument functions from the front panel.
When in
LOCK
REMOTE
, the [Utility
/
Local] button acts as the “local”
function, bringing the LDC500 back to the
LOCK
LOCAL
state with full
front-panel control. Note, however, that in
LOCK
LOCKOUT
, even the
[Utility
/
Local] button is disabled: only a remote command returning
the instrument to
LOCK
LOCAL
, or a power cycle, will restore front-
panel control.
Note that any GPIB access to the LDC500 always places the instru-
ment into the
LOCK
REMOTE
state.
LOCK LOCKOUT
Example:
Display Brightness Level
BLVL(?)
{
z
}
Set (query) the alphanumeric display brighness level
{
to
z
=
(
B12 0
,
B25 1
,
B37 2
,
B50 3
,
B62 4
,
B75 5
,
B87 6
,
B100 7
)
}
.
The brightness of the alphanumeric display on the LDC500 can be
adjusted in 12.5% steps with the
BLVL
command.
Front panel:
Q 9;##
P 46)U
.
BLVL?
Example:
B50
Serial Baud Rate
BAUD(?)
{
z
}
Set (query) the RS-232 baud rate
{
to
z
=
(
BD1200 0
,
BD2400 1
,
BD4800 2
,
BD9600 3
,
BD14400 4
,
BD19200 5
,
BD38400 6
,
BD57600 7
,
BD115200 8
,
BD230400 9
)
}
.
Front panel:
Q 3"@
9% 406)0G
.
BAUD
7
Example:
LDC500 Series Laser Diode Controllers
