14-10 Remote Operations 2400 Series SourceMeter
®
User’s Manual
TALK
This indicator is on when the instrument is in the talker active state. Place the unit in the
talk state by addressing it to talk with the correct MTA (My Talk Address) command.
TALK is off when the unit is in the talker idle state. Place the unit in the talker idle state by
sending an UNT (Untalk) command, addressing it to listen, or sending the IFC (Interface
Clear) command.
LSTN
This indicator is on when the SourceMeter is in the listener active state, which is activated
by addressing the instrument to listen with the correct MLA (My Listen Address) com-
mand. LSTN is off when the unit is in the listener idle state. Place the unit in the listener
idle state by sending UNL (Unlisten), addressing it to talk, or sending 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 the serial poll byte is read or all the conditions that caused
SRQ have been cleared. See Section 15, “Status Structure,” for more information.
LOCAL key
The LOCAL key cancels the remote state and restores local operation of the instrument.
Pressing the LOCAL key also turns off the REM indicator and returns the display to nor-
mal if a user-defined message was displayed.
If the LLO (Local Lockout) command is in effect, the LOCAL key is also inoperative.
For safety reasons, the OUTPUT key will still be active in LLO.
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