Agilent Technologies 34420A, User Manual

Page: 277 / 294

Temperature
Thermocouple Type B, E, J, K, N, R, S, T
Range: -210
°
C to 1820
°
C
Thermistor
5 k
Ω
Range: -80
°
C to 150
°
C
RTD
4-wire, 4.9
Ω
to 2.1 k
Ω
types:
α
= .00385 (DIN/IEC 751)
and
α
= .00391
Range: -200
°
C to 850
°
C
Measurement Noise Rejection 60 (50) Hz
[1]
dc CMRR 140 dB
ac CMRR 70 dB
Integration Time Normal Mode Rejection
[2]
200 plc/3.335 ms (4s) 110 dB
[3]
100 plc/1.675 ms (2s) 105 dB
[3]
20 plc/334 ms (400ms) 100 dB
[3]
10 plc/167ms (200ms) 95 dB
[3]
2 plc/33.3 ms (40 ms) 90 dB
[3]
1plc/16.7ms (20ms) 60 dB
<1plc 0
OPERATING CHARACTERISTICS
[4]
Function Digits
Integration
Time
Readings/s
[5]
DCV, 7
1 ⁄
2
200 plc .15 (.125)
Thermocouple 7
1 ⁄
2
100 plc .3 (.25)
6 1 ⁄
2
20 plc 1.5 (1.25)
6
1 ⁄
2
10 plc 3 (2.5)
5
1 ⁄
2
1 plc 25 (20.8)
5 1 ⁄
2
0.2 plc 100 (100)
4
1 ⁄
2
0.02 plc 250 (250)
Resistance, 7
1 ⁄
2
200 plc .075 (.062)
DCV1/DCV2, 7 1 ⁄
2
100 plc .15 (.125)
DCV 1-2, 6
1 ⁄
2
20 plc .75 (.625)
RTD, 6
1 ⁄
2
10 plc 1.5 (1.25)
Thermistor 5
1
⁄
2
1 plc 12.5 (10.4)
5
1 ⁄
2
0.2 plc 50 (50)
4
1 ⁄
2
0.02 plc 125 (125)
System Speeds
[6]
Configuration Rates 26/s to 50/s
Autorange Rate (DC Volts) >30/s
ASCII reading to RS-232 55/s
ASCII reading to
G
PIB 250/s
Max. Internal Trigger Rate 250/s
Max. Ext. Trig. Rate to Memory 250/s
[1] For 1 k
Ω
unbalanced in LO lead.
[2]For power line frequency
±
0.1%, Filters OFF.
For Digital Filter slow add 20 db, for medium or fast add
10 db for NPLC
≥
1.
[3]For power line frequency
±
1%, use 80 db or
±
3% use 60 db.
[4]Speeds are for delay 0, Display OFF, Filters OFF, OCOMP OFF.
[5]Reading speeds for 60 Hz or (50 Hz), 100 mV through 100 V
ranges. 1 mV range 30/s MAX, 10 mV range 170/s MAX,
thermocouple 120/s MAX.
[6]Speeds are for NPLC 0.02, Delay 0, Display OFF, Chart Out
OFF.
Chapter 8 Specifications
34420A Nano Volt/Micro Ohm Meter
278