HP WaterSkis E1412A, WaterSkis E1312A manual Operating Characteristics

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, 4 μA 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