126 34410A/11A/L4411A User’s Guide
5 Specifications
Performance Versus Integration Time – 60Hz (50Hz) Power line frequency
[ 1 ] Resolution is defined as the typical 10 VDC range RMS noise.
[ 2 ] Normal mode rejection for power–line frequency ± 0.1%.
[ 3 ] Maximum rate for DCV, DCI, and 2–Wire resistance functions
(using zero settling delay, autozero off, etc.).
[ 4 ] Autozero on for => 1 NPLC.
Basic dc accuracy specifications (previous page) include RMS noise at 100 NPLC.
For <100 NPLC, add appropriate “RMS Noise Adder” to basic accuracy specification.
[ 5 ] For power–line frequency ± 1% 75 dB and for ± 3% 55 dB.
[ 6 ] Only for 34411A/L4411A.
Transfer Accurac y (Typical)
All DC volts, <0.12 A DC Current, < 1.2 MΩ: (24 hour % of range error) / 2)
All other DC current and resistance: (24 hour % of range error + % of reading)/2
Conditions: - Within 10 minutes and ±0.5 °C
- Within ±10% of initial value.
- Following a 2–hour warm–up.
- Fixed range.
- Using ≥10 NPLC.
- Measurements are made using accepted metrology practices.
RMS Noise Adder % range
[4]
Integration Time
Number of Power
Line Cycles (NPLC)
Resolution
ppm Range
[1]
NMR db
[2]
Readings /
Second
[3]
DCV
10, 1000 V
DCV
1, 100 V
Resistance
1K, 10K ohm
DCV
0.1 V
Resistance
100 ohm
DCI
1 amp
0.001
[6]
0.002
[6]
0.006
0.02
0.06
0.2
1
2
10
100
30
15
6
3
1.5
0.7
0.3
0.2
0.1
0.03
0
0
0
0
0
0
55
110
[5]
110
[5]
110
[5]
50,000
25,000
10,000
3000
1000
300
60(50)
30(25)
6(5)
0.6(0.5)
0.0060
0.0030
0.0012
0.0006
0.0003
0.0002
0.0
0.0
0.0
0.0
0.0100
0.0060
0.0040
0.0030
0.0020
0.0015
0.0001
0.0001
0.0
0.0
0.1000
0.0600
0.0600
0.0300
0.0200
0.0150
0.0010
0.0010
0.0005
0.0
UG_ED5.book Page 126 Thursday, March 1, 2012 11:28 AM
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