Specifications; Accuracy; Input/Output - Radian RD-30 Operation Manual

Specifications

3.0 Specifications

3.1 Accuracy

All measurement functions excluding harmonic evaluation available on the RD-30 exhibit the
same transfer accuracy at any combination of the normal operating conditions. The errors
associated with these functions are in percent of reading displayed and include variables of
stability, temperature, power factor, traceability uncertainty, and test system errors.
Guaranteed Accuracy: +/- 0.04%
For harmonic evaluation, an RD-30 will exhibit different accuracies of harmonic measurement
depending on their order. The errors associated with these harmonics are in percent of reading at
any combination of the normal operating conditions.
1 – 23 Harmonic: +/- 0.25%
st rd
24 – 64 Harmonic: +/- 0.50%
th th
Even and Odd Harmonic Error Influence: The RD-30 does not care whether the harmonics are odd
or even. The worst-case error is 0.04% starting at the fundamental with a linear error increase of
0.5% at the 64 harmonic order.
th

3.2 Input/Output

INPUTS 1, 2, 3
 Display Gate: BNC with 150 ohms pull up to 5 volts, clamped at 5.7 volts
 Gate Rate: 200 nS pulse width minimum, maximum 20 Hz repetition rate
OUTPUTS 1, 2, 3
 Type: Open collector, clamped at 27 volts
 Frequency: Max 2.1 MHz (200 nS pulse width minimum)
 Metrics: Selectable, i.e. Watt Hours, VAR Hours, VA Hours, etc.
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RD-30 Operations Manual