Remote Operation (Ql355P & Ql564P Only); Control Bus, Instrument Address And Baud Rate Selection; Remote/Local Operation - TTI QL Serie Manual De Instrucciones

Remote Operation (QL355P & QL564P only)
The instrument can be remotely controlled via its RS232, USB or GPIB interfaces. When using
RS232 it can either be the only instrument connected to the controller or it can be part of an
Addressable RS232 Chain (ARC) which permits up to 32 instruments to be addressed from one
RS232 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. The instrument operates at the maximum Baud rate (19200) in USB mode. The virtual
COM port on the controlling computer, which is set up using the driver software supplied, must be set
to the same Baud rate.
it is connected via the RS232 connector. The USB port cannot, however, be used as part of an
Addressable RS232 Chain (ARC).
Some of the following sections are general and apply to all modes (single instrument RS232, USB,
ARC and GPIB); others are clearly only relevant to a particular interface or mode. It is only necessary
to read the general sections plus those specific to the intended remote control mode.
Remote command format and the remote commands themselves are detailed in the Remote
Commands chapter.

Control Bus, Instrument Address and Baud Rate Selection

For successful operation each instrument connected to a GPIB bus or addressable RS232 chain
must be assigned a unique address. For addressable RS232 all instruments in the chain must be set
to the same Baud rate.
Press SHIFT, Bus Type to display the currently selected bus type. To change to another bus type
scroll through the available types using the rotary control until the required type is displayed. Press
OK to select the displayed type or ESCAPE to retain the previous selection.
Press SHIFT, Addr/Baud to display the currently selected instrument bus address. If the currently
selected bus type is RS232 then pressing Addr/Baud again displays the currently selected Baud rate
and repeated presses alternate between the two. To change the address scroll through the available
addresses using the rotary control when the address is displayed. The address can be set between 1
and 31 inclusive and the same address is used for both GPIB and addressable RS232; the address
setting is ignored in USB mode. To change the Baud rate scroll through the available rates using the
rotary control when the Baud rate is displayed. Press OK to select the last displayed address and
Baud rate or ESCAPE to retain the previous selections. Note that RS232 must be selected before
the Baud rate can be selected; the Baud rate is fixed at maximum (19200) for USB.

Remote/Local Operation

At power-on the instrument will be in the local state with the REM indicator 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 REM will be turned on. In this state the keyboard is
locked out and remote commands only will be processed. The instrument may be returned to the
local state by pressing the LOCAL key; however, the effect of this action will only remain until the
instrument is addressed again or receives another character from the interface, when the remote
state will once again be entered.
Application software on the computer can then access the instrument as if
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