Agilent Technologies 3458A Calibration Manual page 83

Reading Rate (Auto-Zero Off)
Temperature Coefficient (Auto-Zero off)
For a stable environment ±1°C add the
following additional error for AZERO OFF
Range Error
100 mV–10 V 5 µV/°C
100 V–1000 V 500 µV/°C
2 / Resistance
Two-wire and Four-wire Ohms (OHM and OHMF Functions)
Range Full Scale Maximum
Resolution
10 W 12.00000 10 µW
100 W
120.00000 10 µW
1 kW 1.2000000 100 µW
10 kW 12.000000 1 mW
100 kW 120.00000 10 mW
1 MW 1.2000000 100 mW
1 W
10 MW 12.000000
9
10 W
100 MW 120.00000
7
1 GW 1.2000000 100 W
Selected Reading Rates
NPLC Aperture Digits Bits A-Zero
0.0001 1.4 µs
0.0006 10 µs
2
0.01 167 µs
0.1 1.67 ms
1 16.6 ms
10 0.166 s
100
1000
Maximum Input
HI to LO
4
LO to Guard
Guard to Earth
Input Terminals
Terminal Material: Gold-plated Tellurium Copper
Input Leakage Current:<20pA at 25°C
Test Open
Current
Voltage Circuit
6
Source
10 mA 0.1 V 12 V
1 mA 0.1 V 12 V
1 mA 1.0 V 12 V
100 µA 1.0 V 12 V
50 µA 5.0 V 12 V
5 µA 5.0 V 12 V
500 nA 5.0 V 12 V
500 nA 5.0 V 5 V
500 nA 5.0 V 5 V
1
Readings / Sec
Off
3
4.5 16 100,000 4,130
5.5 18 50,000 3,150
6.5 21 5,300 930
2
6.5 21 592 245
2
7.5 25 60 29.4
2
8.5 28 6 3
8.5 28 36/min 18/min
8.5 28 3.6/min 1.8/min
Rated Input Non-Destructive
±1000 V pk ±1200 V pk
±200 V pk ±350 V pk
5
±500 V pk ±1000 V pk
Maximum Maximum
Lead Series Offset
Resistance (OCOMP
(OHMF) ON)
20 W 0.01 V
200 W
0.01 V
150 W
0.1 V
1.5 kW 0.1 V
1.5 kW 0.5 V
1.5 kW
1.5 kW
1.5 kW
1.5 kW
Appendix A Specifications
1. For PRESET; DELAY 0;
DlSP OFF; OFORMAT
DINT; ARANGE OFF.
A-Zero
2. Aperture is selected
On
independent of line
frequency (LFREQ).
These apertures are for 60
Hz NPLC values where
1 NPLC = 1/LFREQ. For
50 Hz and NPLC
indicated, aperture will
increase by 1.2 and
reading rates will decrease
by 0.833
3. For OFORMAT SINT
10
W LO to Guard
4. > 10
with guard open.
12
W Guard to Earth.
5. > 10
Temperature Coefficient (ppm
of Reading + ppm of Range) / °C
Without
With ACAL
7
ACAL
3+1 1+1
3+1 1+1
3+0.1 1+0.1
3+0.1 1+0.1
3+0.1 1+0.1
3+1 1+1
20+20 5+2
100+20 25+2
1000+20 250+2
6. Current source is ± 3%
absolute accuracy.
7. Additional error from Tcal or
last ACAL ± 1° C.
8. Additional error from Tcal ±
5° C.
9. Measurement is computed
from 10 M W in parallel with
input
8
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