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176 HP E1312A and HP E1412A Multimeter Specifications Appendix A
AC Characteristics (continued)
Operating Characteristics
System Speeds [10], [11]
Function or Range Change: 5/sec
Autorange Time: <0.8 sec
ASCII readings to HP-IB: 50/sec
Max. Internal Trigger Rate: 50/sec
Max. External Trigger Rate to Memory: 50/sec
[1] Specifications are for 1-hour warm-up at 100 PLC integration time, 3 Hz (Slow) ac filter, sinewave input.
[2] Relative to calibration standards.
[3] 20% overrange on all AC ranges, except 300V and 3A ranges which have 1% overrange.
[4] Values in the AC Characteristics Accuracy Specifications table are for sinewave inputs >5% of range
(>15% of range for 300 VAC). For smaller inputs, add an additional error to the value in the table as follows:
[5] 300Vac range limited to 50kHz. For frequencies >50 kHz, signals must be <1.5 x 10
7
Volt-Hz.
[6] For frequencies below 100Hz, 3Hz (Slow) AC filter specified for sinewave input only.
[7] For 1k
Ω unbalance in LO lead.
[8] Maximum reading rates for 0.01% of ac step additional error. Additional settling delay required
when input dc level varies.
[9] For External Trigger or remote operation using default settling delay (Delay Auto).
[10] Maximum useful limit with default settling delays defeated.
[11] Speeds are for 0.02 PLC integration time, Delay 0, and 200Hz (Fast) ac filter.
[12] 100Vac and 300Vac ranges may latch up the module or system mainframe if you drive the LO terminal
with a high voltage, high frequency input. Only drive the HI terminal when measuring ac voltages.
Function Digits Readings/sec AC Filter
ACV and ACI
6 1/2 1
(per 7 seconds) [8]
Slow (3Hz)
(7 sec settling time)
6 1/2 1 [8] Medium (20Hz)
6 1/2 1.6 [8],[9] Fast (200Hz)
6 1/2 50 [10] Fast (200Hz)
Function Range
Additional Error Specifications to % Range Table Value for Sinewave Inputs:
1% to 5% of range 3% to 15% of range
<50kHz >50kHz <50kHz >50kHz
True RMS
AC Voltage
100mV to 100V add 0.1 to
% of range
add 0.13 to
% of range
300V add 0.3 to
% of range
add 0.4 to
% of range
True RMS
AC Current
1A and 3A add 0.1 to
% of range