32
Remote Operation
(TG2000 only)
The instrument can be remotely controlled via its RS-232 or USB interfaces. When using RS232
it can either be the only instrument connected to the controller or it can be part of an addressable
RS-232 system which permits up to 32 instruments to be addressed from one RS-232 port.
The USB interface operates internally through the instrument's RS232 interface. USB remote
control consequently operates exactly as described for single-instrument RS232 use but via the
USB connector.
Application software on the computer can then access the instrument as if it is connected via the
RS232 connector. The USB port cannot, however, be used as part of an addressable RS232
system.
Remote command format and the remote commands themselves are detailed in the Remote
Commands chapter.
Address and Baud Rate Selection
For successful operation, each instrument connected to the addressable RS-232 system must be
assigned a unique address and all must be set to the same Baud rate.
The instrument’s remote address for operation on the RS-232 interface is set via the
REMOTE
menu, called using the
remote
...
soft-key on the
UTILITIES
screen, see System
Operations section.
REMOTE
interface: RS-232
◊
address: 05
◊
baud rate: 9600
With
address
selected, the soft
−
key, cursor keys or rotary control can be used to set the
address.
With
baud rate
selected, the soft
−
key, cursor keys or rotary control can be used to set the
baud rate for the RS-232 interface.
Remote/Local Operation
At power
−
on the instrument will be in the local state with the REMOTE lamp off. In this state all
keyboard operations are possible. When the instrument is addressed to listen and a command is
received the remote state will be entered and the REMOTE lamp will be turned on. In this state
the keyboard is locked out and remote commands only will be processed. The screen reverts to
the STATUS display but with the actual DC Offset replaced in the bottom right-hand corner by a
local
soft-key.
The instrument may be returned to the local state by pressing the
local
key; however, the
effect of this action will remain only until the instrument is addressed again or receives another
character from the interface, when the remote state will once again be entered.
