Specifications

166
Temperature
SPRT: ITS-90 calibrated temperature
within the range of -190° to +660°C
RTD: Type Á = 0.00385 and Á = 0.00392.
R
0
from 4.9 Ω to 2.1 KΩ. ITS-90 (IEC 751)
Callendar-Van Dusen conversion
Thermistor: 5 KΩ
Thermocouple: ITS-90 conversions
of type B, E, J, K, N, R, S, T
Chart Out (Analog Out)
Resolution: 16 bits
Maximum Output: ±3 V
Span and Offset: Adjustable
Filter (Analog or Digital or Both)
Analog: Low pass 2 pole @13 Hz,
available for dcV on 1 mV, 10 mV,
100 mV ranges
Digital: Moving average filter.
10 (fast), 50 (medium) or 100 (slow)
reading averages
Math Functions
NULL (Channel 1 dcV, Channel 2 dcV,
Difference, Resistance, Temperature)
STATS (Min/max/avg, peak-peak, stan-
dard deviation, number of readings)
SCALE (Allows linear scaling as
Y=MX + B)
CHART NULL (Establishes zero
for rear-panel output)
Application Information
Digital Multimeter Measurement Errors Series
System Cabling Errors and DC Voltage
Measurement Errors in Digital Multimeters
Application Note AN 1389-1
5988-5511EN
Digital Multimeter Measurement Errors Series
Resistance; DC Current; AC Current; and
Frequency and Period Measurement Errors
in Digital Multimeters.
Application Note AN 1389-2
5988-5512EN
Nanovolt/Micro-ohm Meter 34420A (Continued)
More detailed specifications at www.agilent.com/find/34420A
Digital Multimeters
Resistance
3
– 7
1
/
2
digits Resolution all Ranges
Range Test 24-Hour 90-Day 1-Year
Current 23°C ± 1°C 23°C ± 5°C 23°C ± 5°C
DC Voltage
1
– 7
1
/
2
digits Resolution all Ranges
Range 24-Hour 90-Day 1-Year
23°C ± 1°C 23°C ± 5°C 23°C ± 5°C
Abbreviated Technical Specifications
Accuracy Specifications:
± (% of reading + % of range)
1 mV 0.0025 + 0.0020 0.0040 + 0.0020 0.0050 + 0.0020
10 mV 0.0025 + 0.0002 0.0040 + 0.0002 0.0050 + 0.0003
100 mV 0.0015 + 0.0003 0.0030 + 0.0004 0.0040 + 0.0004
1 V 0.0010 + 0.0003 0.0025 + 0.0004 0.0035 + 0.0004
10 V 0.0002 + 0.0001 0.0020 + 0.0004 0.0030 + 0.0004
100 V 0.0010 + 0.0004 0.0025 + 0.0005 0.0035 + 0.0005
DCV1/DCV2 (ratio): Ratio error in % = channel 1 accuracy in % + channel 2 accuracy in %
DCV1-2 (difference): Differnce error = channel 1 (% reading + % range) + channel 2 (% reading + % range)
1 mV 1.3 nV RMS 8 nV p-p 12 nV p-p
10 mV 1.5 nV RMS 10 nV p-p 14 nV p-p
100 mV 10 nV RMS 65 nV p-p 80 nV p-p
1 V 100 nV RMS 650 nV p-p 800 nV p-p
10 V 450 nV RMS 3 µV p-p 3.7 µV p-p
100 V 11 µV RMS 75 µV p-p 90 µV p-p
DC Voltage: Input Resistance: 10 MΩ ± 1% (100 V range)
>10 GΩ ± (1 mV through 10 V range)
Input Protection: 150 V peak to Channel 1 LO
1 Ω 10 mA 0.0015 + 0.0002 0.0050 + 0.0002 0.0070 + 0.0002
10 Ω 10 mA 0.0015 + 0.0002 0.0040 + 0.0002 0.0060 + 0.0002
100 Ω 10 mA 0.0015 + 0.0002 0.0040 + 0.0002 0.0060 + 0.0002
1 kΩ 1 mA 0.0015 + 0.0002 0.0040 + 0.0002 0.0060 + 0.0002
10 kΩ 100 µA 0.0015 + 0.0002 0.0040 + 0.0002 0.0060 + 0.0002
100 kΩ 10 µA 0.0015 + 0.0003 0.0040 + 0.0004 0.0060 + 0.0004
1 MΩ 5 µA 0.0015 + 0.0003 0.0050 + 0.0004 0.0070 + 0.0004
1
Specifications are for channel 1 or channel 2 (100 V range on channel 1 only), after 2-hour warm-up, resolution at 7.5 digits
(100 NPLC), with filters off.
2
After a 2-hour warm-up ±1ºC, 6.5 digits (10 NPLC) with analog filter off digital filter medium (50 readings). 2 minute rms and
24-hour noise typical.
3
All resistance specifications are for channel 1 only, after 2-hour warm-up, resolution at 7.5 digits (100 NPLC) with filters off,
for 4-wire Ω or 2-wire Ω using Null.
4
For 25 ΩSPRT with triple-point of water check within last 4 hours. With no triple-point of water check, add 0.013ºC for 24-hour,
0.035ºC for 90-day, and 0.055ºC for 1-year specifications.
5
For fixed reference junction. Add 0.3ºC for external reference junction, add 2.0ºC for internal reference junction.
DC Voltage Noise Specifications
2
Range 2-Minute 2 – Minute 24-Hour
rms Noise p-p Noise p-p Noise