Keithley 2701 User Manual

Model 2701 User’s Manual Status Structure 11-17
Figure 11-7
Questionable event status
Condition registers
As Figure 11-1 shows, each status register set (except the Standard Event Register set) has
a condition register. A condition register is a real-time, read-only register that constantly
updates to reflect the present operating conditions of the instrument. For example, while
the Model 2701 is in the idle state, bit B10 (Idle) of the Operation Condition Register will
be set. When the instrument is taken out of idle, bit B10 clears.
The commands to read the condition registers are listed in Table 11-4. For details on read-
ing registers, see “Reading registers,” page 11-7.
Table 11-4
Condition register commands
Command Description
STATus:OPERation:CONDition? Read Operation Condition Register.
STATus:MEASurement:CONDition? Read Measurement Condition Register.
STATus:QUEStionable:CONDition? Read Questionable Condition Register.
Note: The format of the response messages for the above queries is set by the FORMatt:SREGister
command.
(B13 - B9)(B14) (B8)(B15)
OR
Questionable
Condition
Register
Questionable
Event Enable
Register
Warn = Command Warning
Cal = Calibration Summary
Temp = Temperature Summary
& = Logical AND
OR = Logical OR
0
(B13 - B9)(B14)
(B8)
(B15)
0
Warn Cal
Questionable
Event
Register
(B13 - B9)(B14) (B8)(B15)
To
Questionable
Summary Bit
(QSB) of Status
Byte Register
(B7 - B5)
(B7 - B5)
(B7 - B5)
Warn Cal
0
Warn Cal
(B4)
Temp
(B4)
Temp
(B3 - B0)
(B3 - B0)
(B3 - B0)(B4)
Temp
&
&
&
&

Keithley 2701 Specifications

General

Max Voltage	300 V
Max Current	3 A
Frequency Range	3 Hz to 500 kHz
Frequency Accuracy	0.01%
Weight	3.6 kg
Measurement Functions	Frequency, Temperature
Interface	IEEE-488 (GPIB), RS-232
DC Voltage Range	300 V
DC Current Range	3 A
AC Voltage Range	300V
AC Current Range	1 μA to 3 A
Resistance Accuracy	0.01%
Channels	10
Dimensions	213mm x 88mm x 370mm