Martel DPC300A, Reference Manual, Page: 29 / 48

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from most office supply and computer stores. To connect the
calibrator to the computer, attach the LEMO connector end of the
cable to the pressure module port on the right side of the calibrator
and the DB-9 connector to the RS-232 port on the computer. The
calibrator should be turned off prior to making the connection and
then turned on.
To set up remote operation of the calibrator on the Windows Hyper
Terminal, connected to a COM port on the PC as in Figure 23, use
the following procedure:
1. Start Hyper Terminal (located in Accessories/Communications of
the Windows Start menu)
2. Select New Connection.
3. For Name enter Beta 330. Select the serial port that the calibrator
is connected to.
4. Enter the above information for port settings.
5. Select ASCII setup from File/Properties/Settings and mark these
choices:
Echo typed characters locally
Wrap lines that exceed terminal width
6. Select Ok
7. To see if the port works enter *IDN?. This command will return
information on the calibrator.
6.3 Changing Between Remote and Local Operation
There are three modes of operation of the calibrator, Local, Remote,
and Remote with Lockout. Local mode is the default mode.
Commands may be entered using the keypad on the calibrator or
using a computer. In Remote mode the keypad is disabled, and
commands may only be entered using a computer, but choosing
[GO TO LOCAL] from the menu on the calibrator display will restore
keypad operation. In Remote with Lockout, the keypad can not be
used at all. To switch modes proceed as follows:
1. To enable Remote mode, type in the serial command REMOTE
at the computer terminal.
2. To enable Remote with Lockout, type in “REMOTE LOCKOUT” in
either order.
3. To switch back to local operation enter LOCAL at the terminal.
This command also turns off LOCKOUT if it was on. For more
information on commands refer to the Remote Commands
section.
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