Keithley 2700 User Manual

10-10 Remote Operations Model 2700 Multimeter/Switch System User’s Manual
Front panel GPIB operation
This section describes aspects of the front panel that are part of GPIB operation, including
messages, status indicators, and the LOCAL key.
Error and status messages
See Appendix C for a list of error and status messages associated with IEEE-488 program-
ming. The instrument can be programmed to generate an SRQ, and command queries can
be performed to check for specific error conditions.
GPIB status indicators
The REM (remote), TALK (talk), LSTN (listen), and SRQ (service request) annunciators
show the GPIB bus status. Each of these indicators is described below.
REM
This indicator shows when the instrument is in the remote state. REM does not necessarily
indicate the state of the bus REN line, as the instrument must be addressed to listen with
REN true before the REM indicator turns on. When the instrument is in remote, all front
panel keys, except for the LOCAL key, are locked out. When REM is turned off, the
instrument is in the local state, and front panel operation is restored.
NOTE If LLO is in effect, LOCAL will be locked out. If TRIGger:SOURce is set to
manual, the TRIG key will be active in remote.
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 Model 2700 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.

Keithley 2700 Specifications

General

Type	Digital Multimeter
Measurement Functions	DC Voltage, AC Voltage, DC Current, AC Current, Resistance, Frequency, Temperature
DC Voltage Range	100 mV to 1000 V
AC Voltage Range	100 mV to 750 V
Frequency Range	3 Hz to 500 kHz
Temperature Range	-200°C to +1372°C
Display	Vacuum Fluorescent Display
Connectivity	IEEE-488, RS-232
Channels	10
Power Supply	100V to 240V AC, 45Hz to 66Hz
DC Current Range	10 µA to 3 A
AC Current Range	10 µA to 3 A
Temperature Measurement	Thermocouple, RTD