DLS 50 - Resetting the DLS 50; Message Terminators; RS-232 Serial Interface

Remote Control
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• If MAV is set read the response and take all the relevant action according to the
error type received
If desired, all the enable registers can be restored on power up with the *PSC command.
4.1.4 Resetting the DLS 50
To reset the DLS 50, use either the "Device Clear" command or the "Interface Clear"
line as defined in the IEEE 488.1 standard. This has the same effect as the power-up
reset.
4.1.5 Message Terminators
Messages to the DLS 50 must be terminated with either a Line Feed character (ASCII
<LF>, decimal 10, hex 0A), an IEEE 488.1 EOI signal or both. Messages from the DLS
50 are always terminated with a Line Feed character and the IEEE 488.1 EOI signal.
Note that some languages, including BASIC, may automatically append a carriage
return and a line feed at the end of messages. The carriage return character is not a
valid terminator, and will invalidate the last command.
The obvious solution is to send messages without carriage return. For example, in
BASIC, you can add a semi-colon ";" after any print to the IEEE 488 port. An alternate
solution is to append a semi-colon after the commands. This will make the DLS 50 see
the carriage return as a separate command, and discard it.
4.2 RS-232 Serial Interface
The DLS 50 uses a female DB-25 connector, and is configured as a DCE device.
To use the serial interface, simply connect your computer to the DLS 50 and set both the
computer and DLS 50 to the same protocol: baud rate, data format and flow control. Do
NOT use a null modem. The following sections give more details on the various
protocols.
The RS-232 serial interface can be set from the front panel (see section 3.4) or remotely
(see sections 4.7.3, 4.7.4 and 4.7.5) with either the serial or the IEEE 488 interfaces.