O P E R A T I N G I N R E M O T E C O N T R O L
LDC-3908 Laser Diode Controller Command Set
22
LDC-3908
C H A P T E R
3
!
For further clarity in programming, the (Boolean) values of one (1) and zero (0) may be replaced
with the names indicated in Table 3.1.
If multiple parameters are expected, they must be separated with commas. For example, to set the
Steinhart-Hart constants (C1, C2, and C3) on a TEC module in the LDC-3916372 Laser Diode
Controller, the following command may be sent:
TEC:CONST 1.111, 2.004, 0.456
The LDC-3908 uses a terminator of <NL><^END> (new line EOI). For users whose GPIB driver
defaults expect a carriage return in the terminator, <CR><NL><^END>, the TERM command
may be used for convenience (See TERM command in Chapter 4). For more information, refer to
your GPIB driver configuration manual.
Table 4.1 lists some of the LDC-3908's device-dependent commands, with the full path shown for
each command and a brief explanation of its usage. Device-dependent commands for each
module are listed in that module's instruction manual.
IEEE 488.2 Common Commands
IEEE 488.2 Common Commands and Queries are distinguished by the "*" which begins each
mnemonic. The diagrams below show the syntax structure for common commands, common
command queries, and common commands with numeric data required.
Numeric data is required with *PSC (1 = on, 0 = off), *RCL (0 to 10, see
Save and Recall
on page
15
), *SAV (1 to 10, see
Save and Recall
on page
15
), *ESE (0 to 255), *SRE (0 to 255), and *PUD
(used at factory only).
The *CAL? query returns "1" if all LDC−3908 modules’ self−calibration routines are completed
properly, otherwise "0" is returned.
The *TST? query returns "1" if all LDC−3926 modules that were working at power−up (or at the time
of the last *TST? query) have responded to the LDC−3908 mainframe within the past 15 seconds. If
any modules fail to respond to the mainframe, *TST? returns "0", and those modules are no longer
recognized by the system.
RAD
-Missing parameter.
modpud ?
-Space not allowed before question mark, MODPUD command expected.
*SAV3
-Space missing between *SAV command and the parameter value, 3.
Table 3.1
Substitute Parameter Names
SUBSTITUTE NAME
VALUE
ON
1
OFF
0
TRUE
1
FALSE
0
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