Keithley 2010 User Manual

Response messages
A response message is the message sent by the instrument to the computer in response to a
query command program message.
Sending a response message
After sending a query command, the response message is placed in the Output Queue. When
the Model 2010 Multimeter is addressed to talk, the response message is sent from the Output
Queue to the computer.
Multiple response messages
If you send more than one query command in the same program message (see “Multiple
Command Messages”), the multiple response messages for all the queries is sent to the computer
when the Model 2010 is addressed to talk. The responses are sent in the order that the query
commands were sent and are separated by semicolons (;). Items within the same query are
separated by commas (,). The following example shows the response message for a program
message that contains four single item query commands:
0; 1; 1; 0
Response message terminator (RMT)
Each response is terminated with an LF (line feed) and EOI (end or identify). The following
example shows how a multiple response message is terminated:
0; 1; 1; 0; <RMT>
Message exchange protocol
Two rules summarize the message exchange protocol:
Rule 1. Always tell the Model 2010 what to send to the computer.
The following two steps must always be performed to send information from the instrument
other computer:
1. Send the appropriate query command(s) in a program message.
2. Address the Model 2010 to talk.
Rule 2. The complete response message must be received by the computer before another
program message can be sent to the Model 2010.
Remote Operation 4-33

Keithley 2010 Specifications

General

Frequency Range	3 Hz to 300 kHz
DC Voltage Range	100 mV to 1000 V
AC Voltage Range	100 mV to 750 V
DC Current Range	3 A
DC Current Accuracy	0.05%
AC Current Range	3 A
Resistance Accuracy	0.01%
Interface	GPIB, RS-232
Power Supply	50 Hz or 60 Hz