Section 2: Installation Model 2601B-PULSE System SourceMeter Instrument Reference Manual
2-32 2601B-PULSE-901-01A April 2020
TALK
This indicator is on when the instrument is in the talker active state. Place the instrument in the talk
state by addressing it to talk with the correct talk command. TALK is off when the instrument is in the
talker idle state. Place the instrument in the talker idle state by sending a UNT (untalk) command,
addressing it to listen, or by sending the IFC (interface clear) command.
LSTN
This indicator is on when the instrument is in the listener active state, which is activated by
addressing the instrument to listen with the correct listen command. LSTN is off when the instrument
is in the listener idle state. Place the instrument in the listener idle state by sending UNL (unlisten),
addressing it to talk, or by sending the IFC (interface clear) command over the bus.
SRQ
You can program the instrument to generate a service request (SRQ) when one or more errors or
conditions occur. When this indicator is on, a service request has been generated. This indicator
stays on until all conditions that caused the SRQ are cleared.
Note that while the SRQ indicator turns on when a service request is generated, it reflects the state of
the master summary status (MSS) bit and not the request for service (RQS) bit (see "Bit 6, Request
Service (RQS)/Master Summary Status (MSS)" in the topic Status Byte Register (on page 15-16) for
more detail). Therefore, performing a serial poll will not turn off the indicator. To turn off the indicator,
you must clear all the conditions that caused the MSS bit to be set. Refer to Clearing registers (on
page 15-13) for information.
LOCAL key
The EXIT (LOCAL) key cancels the remote state and restores local operation of the instrument.
Pressing the EXIT (LOCAL) key turns off the REM indicator and returns the display to normal if a
user-defined message was displayed. Pressing the EXIT (LOCAL) key or the OUTPUT ON/OFF
control also aborts any commands or scripts that are being processed.
If the LLO (local lockout setting) command is in effect, the EXIT (LOCAL) key is inoperative. For
safety reasons, the OUTPUT ON/OFF control can be used to turn the output off while in LLO.
RS-232 interface operation
The following topics contain information about configuring RS-232 communication parameters,
sending or receiving command messages, and requesting or retrieving data. To control the
2601B-PULSE, connect a controller or personal computer to the 2601B-PULSE RS-232 interface.
Alternatively, you can use the 2601B-PULSE to control another device over RS-232.
To Next Page
Loading...
Need help?
General
