Agilent Technologies 34980A User's Guide download pdf (Page 27)

Measurement characteristics with

optional internal DMM

continued

DC operating characteristics

[4]

Function Digits

[5]

Readings/s

Additional RMS noise error

DCV

[7]

, DCI, and 6

0.6(0.5) 0%ofrange

Resistance(≤10kΩ) 6

6(5) 0%ofrange

60(50) 0.001%ofrange

300 0.001%ofrange

[6]

600 0.01%ofrange

[6]

3000 0.1%ofrange

[6]

Autozero OFF operation

Following instrument warm-up at calibration temerature ±1°C and

<10minutes,add0.0002%rangeadditionalerror+5µV.(For300VDC,

insteadof.0002%ofrange,need.00066%ofrange)

Settling considerations

Readingsettlingtimesareaffectedbysourceimpedance,lowdielectric

absorption characteristics, and input signal changes.

AC operating characteristics

[8]

Function Digits

[9]

Readings/s

AC filter

ACV, ACI: 6

7sec/reading Slow(3Hz)

1 Medium (20 Hz)

[10]

Fast (200 Hz)

100

[11]

Fast (200 Hz)

[4] Readingspeedsfor60Hzand(50Hz)operation;autozeroOFF

[5] 6

digits=22bits;5

digits=18bits;4

digits=15bits

[6] Add20µVforDCV,4µAforDCI,or20mΩforresistance

[7) For300VDC,multiplytheadditionalnoiseerrorby3.3

[8] Maximumreadingratesfor0.01%ofACstepadditionalerror;additonal

settling delay required when input DC level varies

[9] 6

digits=22bits;5

digits=18bits;4

digits=15bits

[10] For external trigger or remote operation using default settling delay

(Delay Auto)

[11] Maximum limit with default settling delays defeated

System specifications

Scanning inputs

Analog: 34921A, 34922A, 34923A, 34924A, and

34925A multiplexer channels

Digital: 34950A/52A digital in and totalize

Scan triggering

Source Interval, external, button press, software,

or on monitor channel alarm

Scan count 1 to 50,000 or continuous

Scan interval 0 to 99 hours; 1ms step size

Channel delay 0 to 60 seconds per channel; 1 ms step size

External trig delay < 2 ms. With monitor on < 200 ms

External trig jitter < 2 ms

Alarms

Analoginputs Hi,Lo,orHi+Loevaluatedeachscan

Digital inputs 34950A/52A digital in maskable pattern

match or state change

34950A/52A frequency and totalize:

Hi limit only

Monitor channel Alarm evaluated each reading

Alarmoutputs 4TTLcompatible

 SelectableTTLlogicHiorLoonfail

Latency 5ms(typical)

Memory

Type Volatile

Readings 500,000withtimestamp,readableduringscan

States 5 instrument states with user label

Alarm queue Up to 20 events with channel number, reading,

and timestamp

System features

Per-channelmath IndividualMx+Bscalingandcalculatedreal

Min/max/average time

Power fail recovery Save switch states

Relaymaintenance Countseachrelayclosureandstoreson

module User resettable

Real-timeclock Battery-backed,20-yeartypicallife

1 2 ... 22 23 24 25 26 27 28 29 30 31 32

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Agilent Technologies 34980A User's Guide Page 27

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