DC Characteristics (continued)

Operating Characteristics [8]

 

 

 

 

 

 

 

Additional Noise

 

 

 

Function

PLCs

Digits

Readings/sec

Error

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

100

6.5

0.6

(0.5) [8]

0% of range

 

 

 

 

 

 

 

 

 

 

 

 

DCV, DCI and

10

6.5

6

(5) [8]

0% of range

 

 

 

 

 

 

 

 

 

 

 

Resistance

 

 

 

 

 

 

 

 

1

5.5

60

(50) [8]

0.001% of range [9]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0.2

5.5

 

300

0.001% of range [9]

 

 

 

 

 

 

 

 

 

 

 

 

 

0.02

4.5

 

1000

0.01% of range [9]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

System Speeds [10]

 

 

 

 

 

 

Function Change:

30/sec

 

 

 

 

 

Range Change:

65/sec

 

 

 

 

 

Autorange Time:

<30 ms

 

 

 

 

 

Max. Internal Trigger Rate:

1000/sec

 

 

 

 

 

Max. External Trigger Rate to Memory: 1000/sec

Additional Error with Autozero OFF

Following instrument warm-up at calibration temperature ±1°C and <10 minutes:

100mV - 100V ranges: add (0.0002% range additional error +5 μV). 300V range: add 0.0006% range.

Settling Considerations

Reading settling times are affected by source impedance, cable dielectric characteristics and input signal changes.

Measurement Considerations

HP recommends the use of Teflon or other high-impedance, low-dielectric absorption wire insulation for these measurements.

[5]For 1kΩ unbalance in LO lead.

[6]For power-line frequency ±0.1%.

[7]For power-line frequency ±1%, subtract 20dB; for ±3%, subtract 30dB.

[8]Readings speeds for 60Hz and (50Hz) operation, Autozero OFF.

[9]For 300V and 3A ranges: use 0.003% range for 5.5 digits and 0.030% range for 4.5 digits;

For all ranges: add 20 μV for DC volts, 4μA for DC current or 20mΩ for resistance.

[10]Speeds are for 0.02 PLC integration time, Delay 0 and Autozero OFF. Includes measurement and data transfer over the VXI backplane.

Appendix A

HP E1312A and HP E1412A Multimeter Specifications 173