Datasheet

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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
(includes switch, measure time and I/O
time)
Direct measurement
to memory(GPIB)
Single channel
1,2
GPIB msec
USB 2.0
msec
LAN (w/VXI 11)
msec
Measurement into
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 scale
(eg MEAS DCV 10 / MEAS DCV 1)
9.52
10.64
11.76
8.40
Single channel while changing function
(eg. MEAS ACV / MEAS DCV)
128
120
120
120
Command execution time
3
34925A
Open or Close
Read?
Close/Read/Open
Init/*WAI
Close/Init/Open
0.7
2.9
4.8
1.9
3.7
0.9
3.3
5.3
2.1
4.1
1.6
4.7
6.5
3
4.7
34923A
Open or Close
Read?
Close/Read/Open
Init/*WAI
Close/Init/Open
0.9
2.9
5.3
1.9
4.2
1.2
3.3
5.8
2.1
4.7
1.8
4.7
6.5
3
5.2
34921A
Open or Close
Read?
Close/Read/Open
Init/*WAI
Close/Init/Open
4.7
2.9
14
1.9
12.4
5 3
3
15
2.1
14
5.3
4.7
15
3
4
34934A
Close
Read?
Open
1.8
2.8
1.5
2.2
3.1
1.8
3.1
4.8
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.
34934A multi-channel close speeds over GPIB (msec)
Isolate for fixed mode
Auto 100 mode
Auto 0 mode
Close 2 channels
Close 5 channels
Close 10 channels
Close 60 channels
0.97
0.43
0.22
0.13
1.22
0.54
0.28
0.17
1.31
0.56
0.29
0.21
Single channel measurement rates – DMM reading rates
1,2
Function
Resolution
Rds/s
DCV
4½ digits (0.02 plc)
5½ digits (1 plc)
6½ digits (10 plc)
3000
59
6
2-wire resistance
4½ digits (0.02 plc)
5½ digits (1 plc)
6½ digits (10 plc)
2000
58
6
Thermocouple
(0.02 plc)
0.1
o
C (1 plc)
1000
59
RTD/Therm istor
1
o
C (0.02 plc)
0.1
o
C (1 plc)
0.01
o
C (10 plc)
1900
58
6
ACV
6½ fast (200Hz)
350