16-5
IM 253421-01E
16
Specifications
16.3 Frequency Measurement
Item
Specification
Input
V, A
Operating principle
Reciprocal counting method
Frequency ranges
10 Hz to 50 kHz
(100 Hz, 1 kHz, 10 kHz, 100 kHz, Auto range)
Accuracy
±
(0.1% of rdg + 1 digit)
Minimum input is more than 30% of rated range.
When an input frequency is less than 200Hz, FILTER must be ON to obtain the specification
accuracy.
Minimum input frequency is more than 20% of frequency measurement range.
16.4 Communication (optional)
Item
Specification
GP-IB
Electrical specifications:
IEEE St’d 488.2-1987
Mechanical specifications:
IEEE St’d 488.2-1987
Interface function:
SH1, AH1, T5, L4, SR1, RL1, PP0, DC1,DT1, C0
RS-232-C
Transmission mode: Start stop synchronization
Baud rate: 75, 150, 300, 600, 1200, 2400, 4800, 9600 bps
16.5 Computing Functions
1-phase 2-wire
Effective Power
(W)
W
Apparent Power
(VA)
VA=V
×
A
cos
–1
( )
(VA)
2
–W
2
Reactive Power
(var)
Power Factor
(PF)
Phase Angle
(deg)
W
VA
Computating range
Depends on
the selected
V and A ranges
Depends on
the selected
V and A ranges
Same as apparent
power (var
≤
0)
–1 to 0 to 1
–180 to 0 to 180
Computing accuracy
(for the value operated
from the measured
value)
–
±
0.005% of
VA range
±
0.005% of
var range
±
0.0005
Resolution
(power factor
±
0.0005)
99999
99999
99999
±
1.0000
±
180.0
W
VA
Display resolution
(when the number of
displayed digits is 5)
Note
•
The apparent power (VA), reactive power (var), power factor (PF), and phase angle (deg)
measurements in this instrument are computed digitally from the voltage, current and
effective power. If the input is non-sinusoidal, the measured values may differ from those
obtained with instruments employing different measurement principles.
•
When the current or voltage is less than 0.5% of the range, the VA and var will be
displayed as 0, and PF/deg will be displayed as an error.
•
The Lead and Lag are displayed for V and A input at 50% or more. The detected lead/lag
accuracy is
±
5 degrees over the frequency range of 20 Hz to 2 kHz.
