Keithley 2001 User Manual

OPERATING SPEED (cont’d)
RANGE CHANGE SPEED
1
SINGLE FUNCTION SCAN SPEED
4
(Internal Scanner)
2-Wire Ohms 4-Wire Ohms TC RTD
DCV (20V)
7
(2k Ω )
7
(2k Ω )
7
ACV Frequency Temperature Temperature (2-Wire)
Time Rate Time Rate Time Rate Time Rate Time Rate Time Rate Time Rate
per (Chan./ per (Chan./ per (Chan./ per (Chan./ per (Chan./ per (Chan./ per (Chan./
TYPE Chan. second) Chan. second) Chan. second) Chan. second) Chan. second) Chan. second) Chan. second)
Ratio or Delta
5
(2 channels) 4 ms 250 4.4 ms 230 18.5 ms 54
Fast Scan
(using solid state
channels) 5.5 ms 181 7 ms 140 520 ms 1.9 958 ms 1 13.8 ms 72
Normal Scan 10.3 ms 97 12.1 ms 80 21 ms 47 532 ms 1.8 974 ms 1 18 ms 55 95 ms 10
AUTO ZERO OFF AUTO ZERO ON
RATE RATE
FUNCTION From To TIME (per second) TIME (per second)
DCV 200mV, 2V 20V 4.5 ms 220 3.1 ms 190
200V, 1000V 20V 8.0 ms 120 8.6 ms 110
200mV, 2V, 20V 200mV, 2V, 20V 4.5 ms 220 36 ms 27
200V, 1000V 200mV, 2V 8.0 ms 120 38 ms 26
200mV, 2V, 20V 200V 24 ms 41 52 ms 19
1000V 200V 9 ms 110 37 ms 27
Any 1000V 11 ms 165 10.1 ms 190
ACV Any Any 563 ms 1.8 563 ms 1.8
DCI A ny 2 0 0
µ A, 2mA, 20mA 4.5ms 220 5.2ms 190
200mA, 2A 6.0ms 160 6.6ms 150
ACI Any Any 525 ms 1.9 525 ms 1.9
Ohms (2-wire) Any 20
Ω , 200 Ω , 2k Ω , 20k Ω 6.0ms 160 34 ms 29
Any 200k
Ω 26 ms 38 66 ms 15
Any 2M Ω 95 ms 10 420 ms 2.3
Any 20M
Ω 265 ms 3.7 690 ms 1.4
Any 200M Ω , 1G Ω 366 ms 2.7 5.5ms 180
Ohms (4-wire) Any 20
Ω , 200 Ω , 2k Ω , 20k Ω 8 ms 160 34 ms 29
Any 200k Ω 26 ms 38 66 ms 16
OPERATING SPEED NOTES
1. With Display off, 1 power line cycle, autorange off, filter off, triggers halted. Display on may
impact time by 3% worst case. To eliminate this impact press ENTER (hold) to lock out
display from front panel.
2. Based on using 20V, 2k
Ω , 200mA ranges.
3. Auto Zero off, using 386SX/16 computer, average time for 1000 readings, byte order
swapped, front panel disabled.
4. Typical times for 0.01 power line cycle, autorange off, Delay=0, 100 measurements into buffer.
5. Ratio and delta functions output one value for each pair of measurements.
6. Time to measure, evaluate limits, and set digital outputs are found by summing
measurement time with limits calculation time.
7. Auto Zero off.
8. Based on 100kHz input frequency.
MIXED FUNCTION SCAN SPEED
1
(Internal Scanner)
SCAN CONFIGURATION Average Time/ Average Rate
(Channels) Channel (Channel/s)
5 chan. DCV, 5 chan. 2w
Ω 20 ms 50
3 DCV, 3 2w
Ω , 4 TC 22 ms 45
5 2wRTD, 5 TC 60 ms 17
5 2w
Ω , 5 2wRTD 60 ms 17
9 DCV, 1 ACV 73 ms 13
2 DCV, 1 ACV, 2 2w
Ω , 1 4w Ω 122 ms 8
5 DCV, 5 Freq. 490 ms 2
3 DCV, 3 ACV, 2 4w
Ω 220 ms 5
TRIGGER SPEED (External Trigger or Trigger-Link)
Auto Zero On Auto Zero Off
Trigger Latency: 1.2 ms typical 2
µ s
Trigger Jitter:
± 0.5 µ s
MATH AND LIMITS CALCULATION SPEED
1
NOMINAL NOMINAL MAXIMUM
CALCULATION TIME RATE (per second) TIME
mX + b 0.35 ms 2850 0.44 ms
Percent 0.60 ms 1660 0.64 ms
Limits
6
0.35 ms 2850 0.37 ms
None 0.07 ms 0.08 ms
ENGINEERING UNIT CONVERSION SPEED
Included in reading times for multiple measurements; add to total time for single
measurements only.
CONFIGURATION TIME RATE (per second)
DCV 2.4 ms 416
DCV, Filter on 2.4 ms 416
DCV, Relative on 2.5 ms 400
DCV, Ratio on 3.7 ms 270
ACV 5.3 ms 188
ACV, Relative on 5.3 ms 188
ACV, Filter on 6.8 ms 147
ACV, dB 9.4 ms 106
ACV, dBm 17.3 ms 57
DISPLAY SPEED
Display updated at up to 20 times per second. Display update can be suspended
by holding the display (press ENTER) or setting Display Enable Off from GPIB.
GPIB DATA FORMATTING TRANSMISSION TIME
3
READINGS READINGS WITH
ONLY TIME STAMP
FORMAT Time Rdg./s Time Rdg./s
DREAL
(Double precision real) 0.30 ms 3330 2.0 ms 500
SREAL
(Single precision real) 0.37 ms 2710 2.1 ms 475
ASCII 3.9 ms 255 8.2 ms 120

Keithley 2001 Specifications

General

Brand	Keithley
Model	2001
Category	Multimeter
Language	English