User`s guide

24
Additional Low Frequency Error for ACV, ACI (% of reading)
Frequency AC Filter Slow AC Filter Medium AC Filter Fast
10Hz-20Hz 0 0.74 –
20Hz-40Hz 0 0.22 –
40Hz-100Hz 0 0.06 0.73
100 Hz - 200 Hz 0 0.01 0.22
200 Hz - 1 kHz 0 0 0.18
>1kHz 0 0 0
Additional Error for Frequency, Period (% of reading)
Aperture (Digits)
Frequency 1 second 0.1 seconds 0.01 seconds
( 6
1
/
2
digits) (5
1
/
2
digits) (4
1
/
2
digits)
3 Hz- 5 Hz 0 0.12 0.12
5Hz-10Hz 0 0.17 0.17
10 Hz - 40 Hz 0 0.2 0.2
40 Hz - 100 Hz 0 0.06 0.21
100 Hz - 300 Hz 0 0.03 0.21
300Hz-1kHz 0 0.01 0.07
>1kHz 0 0 0.02
Typical system speeds (Measurementsmadeona3.2GHzPCrunningVB6inWindowsXPPro)
Single Channel Reading times in msec Direct measurements – direct to I/O Direct measurement
(includes switch, measure time and I/O time) to memory(GPIB)
Single channel
[1] [2]
GPIB USB2.0 LAN Measurementinto
msec msec (w/ VXI 11) msec memory msec
Singlechannel,DCV 2.83 3.14 4.57 1.90
Singlechannel,ACV 5.00 5.35 5.75 4.00
Single channel, ohms 2.91 3.14 4.65 1.90
Singlechannelwhilechanging 9.52 10.64 11.76 8.40
scale (eg MEAS DCV 10 / MEAS DCV 1)
Single channel while changing 128 120 120 120
function (eg. MEAS ACV / MEAS DCV)
Command execution time
[3]
34925A OpenorClose 0.7 0.9 1.6
 Read? 2.9 3.3 4.7
 Close/Read/Open 4.8 5.3 6.5
Init/*WAI 1.9 2.1 3
 Close/Init/Open 3.7 4.1 4.7
34923A Open or Close 0.9 1.2 1.8
 Read? 2.9 3.3 4.7
 Close/Read/Open 5.3 5.8 6.5
Init/*WAI 1.9 2.1 3
 Close/Init/Open 4.2 4.7 5.2
34921A OpenorClose 4.7 5 5.3
 Read? 2.9 3.3 4.7
 Close/Read/Open 14 15 15
Init/*WAI 1.9 2.1 3
Close/Init/Open 12.4 14 14
34934A Close 1.8 2.2 3.1
 Read? 2.8 3.1 4.8
Open 1.5 1.8 3.2
[1] ReadingsweremadewithminimumNPLC,delay0,displayoff,autozerooff
[2] Alltimesincludetheissueof“READ?”andtheretrievalofdata
[3] CLOSEorOPENbustransfertimesallowedtooverlappreviouscommand;commandparsetimesoverlapcurrentactivityuntilIOlatencydominant
Temperature measurement accuracy
Temperature 1-year accuracy Type Best range
[1]
Extended range
[1]
Temperature
coefficient/°C
Thermocouple B 1100°Cto1820°C 1.2°C 400°Cto1100°C 1.8°C 0.03°C
(34921A only, E -150°C to 1000°C 1.0°C -200°C to -150°C 1.5°C 0.03°C
includes cold J -150°C to 1200°C 1.0°C -210°C to -150°C 1.2°C 0.03°C
junction accuracy K -100°C to 1200°C 1.0°C -200°C to -100°C 1.5°C 0.03°C
onterminalblock) N -100°Cto1300°C 1.0°C -200°Cto-100°C 1.5°C 0.03°C
 R 300°Cto1760°C 1.2°C -50°Cto300°C 1.8°C 0.03°C
 S 400°Cto1760°C 1.2°C -50°Cto400°C 1.8°C 0.03°C
T -100°C to 400°C 1.0°C -200°C to -100°C 1.5°C 0.03°C
RTD R
o
from -200°C to 600°C 0.06°C 0.003°C
 49Ωto2.1KΩ
Thermistor 2.2 k, 5 k, 10 k -80°C to 150°C 0.08°C 0.002°C
[1] For total measurement accuracy, add temperature probe error; for <1 ° C accuracy, an external fixed reference is required