Keithley 2110 User Manual

Appendix
B: Status model Model 2110 5½ Digit Multimeter
Reference Manual
B-10 2110-901-01 Rev. C/August 2013
Questionable Data Register
The Questionable Data Register indicates when measurements result in any of the following
conditions by setting the appropriate bit:
• Voltage range overload
• Current range overload
• Out-of-limit conditions
• Ohms overload
All of the set bits are summarized to the Questionable Summary Bit (QSB) (B3). A set summary bit
indicates that an enabled questionable event has occurred.
The bits of the Questionable Data Register are described in the following table. Use the
STATus:QUESTionable:ENABle command to set the contents of the Event Enable Registers.
Questionable Data Register
Bit Definition Decimal
value
Description
0
Voltage overload
1
Range overload on DC or AC volts, frequency, period, diode or
ratio function.
1
Current overload
2
Range overload on DC or AC current function.
2
Not used
4
Set to 0.
3
Not used
8
Set to 0.
4
Not used
16
Set to 0.
5
Not used
32
Set to 0.
6
Not used
64
Set to 0.
7
Not used
128
Set to 0.
8
Not used
256
Set to 0.
9
Ohms overload
512
Range overload on 2 or 4-wire ohm function.
10
Not used
1024
Set to 0.
11
Limit Failed at LO
2048
Reading is less than the lower limit under limit test.
12
Limit Failed at HI
4096
Reading is more than upper limit under limit test.
13
Not used
8192
Set to 0.
14
Not used
16384
Set to 0.
15
Not used
32768
Set to 0.
Status reporting command summary
Refer to STATus subsystem summary (on page 5-25) for information about status commands.

Keithley 2110 Specifications

General

Model	2110
DC Voltage Range	100 mV to 1000 V
AC Voltage Range	100 mV to 750 V
Continuity	Yes
Diode Test	Yes
Category	Digital Multimeter
Display	5.5 digit
DC Current Range	100 µA to 3 A
AC Current Range	100 µA to 3 A
Resistance Range	100 MΩ
Frequency Range	3 Hz to 300 kHz
Frequency Accuracy	0.01% + 1 count
Capacitance Range	1 nF to 100 µF
Capacitance Accuracy	1% + 5 counts
Connectivity	USB, GPIB (optional)
Dimensions	88 mm
Power Supply	100 V to 240 V AC, 50/60 Hz
DC Voltage Accuracy	±0.012% + 2 counts