Operation; Selecting Local Or Remote Mode; Selecting The Active Channel; Remote Control Commands - SpectraDynamics HPDA-15RMi-S Operating Manual

6.0 Operation

The HPDA-15RMi-S autoswitch amplifier may be operated in local control mode where the
instrument is controlled by the settings on the front panel or in remote mode where the
instrument is controlled by sending commands through the Ethernet interface. The mode
of operation is selected through the locking switch on the front panel labeled CONTROL.
When the switch is in the LOCAL position the instrument can only be controlled through
the front panel. The Ethernet port is still active for monitoring purposes but cannot be used
to change any of the settings of the instrument. Remote mode is selected by moving the
switch to the ETH position. While in remote mode of operation the instrument can only be
controlled through the Ethernet interface.

6.2 Selecting the active channel

The user can select the active channel from the two available input channels. Move the
ACTIVE CH switch to the 1 position to select RF INPUT 1 as the active channel. Move the
ACTIVE CH switch to the 2 position to select RF INPUT 2 as the active channel. The LED
corresponding to the active channel selected will turn on. Moving the switch back to the
center position will activate the autoswitch mode.
In remote mode select RF INPUT 1 as the active channel:
Issue command *IN 1 <cr> where <cr> is a carriage return.
In remote mode select RF INPUT 2 as the active channel:
Issue command *IN 2 <cr> where <cr> is a carriage return.
In remote mode select Autoswitch mode:
Issue command *IN 0 <cr> where <cr> is a carriage return.

6.3 Remote control commands

All commands are CASE sensitive. A carriage return <cr> or linefeed ends the command.
*IN ch <cr> Selects the active channel.
The *IN command allows remote control of the instrument through the Ethernet interface.
The Control switch on the front panel must be set to ETH to enable remote control over the
Ethernet interface. The instrument will return LOCAL MODE if remote control is not
enabled. If remote control is enabled the command executes and the instrument does not
return a response.
ch - remote mode channel parameter { 0, 1, 2}
Page 11