Hioki PW8001-01, Инструкция по эксплуатации

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146
Waveform/Analog Output (Waveform and D/A Output Option)
Analog output
• The instrument outputs measured values as level-converted DC voltage signals.
• Voltage input and current input (current sensor input) are isolated from each other.
• You can select an item from among the basic measurement items for each output channel; thus,
20 parameters in total can be outputted.
• By using the instrument in combination with a data logger or a recorder, you can record
fluctuations over extended periods of time.
Specifications
Output voltage
(Output range)
±
5 V DC f.s. (valid output range: 1% f.s. to 110% f.s.)
For the output rate of each parameter, see “Output rates” (p. 148).
Output resistance 100
Ω ±
5
Ω
Output refresh interval
Varies with the data refresh interval for the selected parameters.
• The instrument will generate an output of approximately 6 V during positive over-range events
(for voltage peak and current peak, approximately 5.3 V). For negative over-range events, the
instrument will generate an output of approximately −6 V (for voltage peak and current peak,
approximately −5.3 V).
• The instrument may generate the maximum output of approximately
±
12 V in the event of a
malfunction.
• When a VT ratio or CT ratio is used, the instrument will output the value obtained by multiplying
the range by the VT ratio or CT ratio within the range of
±
5 V DC.
• While in the hold state or peak hold state, and during average operation, the instrument will
output the appropriate operational value.
• When the hold function has been enabled and an interval time has been set, the instrument
refreshes the output at set intervals once starting the integration.
• When the measurement range has been set to auto-ranging, the analog output rate will vary with
range switching. In instances such as abruptly fluctuating measured values, exercise care to
avoid making any mistakes in range conversion. In addition, it is recommended to fix the range
manually during such measurement.
• Data cannot be output using the harmonic analysis function for parameters other than basic
measurement items.
To change the full-scale value for active power integration D/A output
When using analog output, set the integration full-scale value.
For example, if the integrated value is small relative to the full-scale value, it will take a longer
time for the integrated value to reach the full-scale value, causing the D/A output voltage to vary
gradually.
Conversely, if the integrated value is large relative to the full-scale value, it will take a shorter
time for the integrated value to reach the full-scale value, causing the D/A output voltage to vary
abruptly.
By setting the integration full scale, you can change the active power integration D/A output full-
scale value.
HIOKI PW8001A961-00