HB-4A used for fluorescent lamp digitally displays all the test data, and show all the data and waveforms if equipped with a computer. HB-4A is good for both quality test, and production line test.

1. Input characteristics analysis:

Measure voltage RMS, current RMS, voltage peak, current peak, crest factor, active power, apparent power, power factor, frequency, waveforms of voltage and current, THD and 0-39th harmonic component of current and voltage.
Accuracy of V,A:±(0.1% Reading+0.1%range+1 digit).

2. Output start characteristics analysis:

Measure the variation and the maximum value of the RMS of lamp voltage, lamp current, cathode current and filament current from 0s to 5th second.
Accuracy of V,A:±2% Range.

3. Output steady-state characteristics analysis:

Test the RMS, peak values and crest factor, waveforms of lamp voltage (10.0～300.0V), current (0.010～2.000A), filament current (0.010～2.000A) and cathode current (0.010～2.000A) in the steady state the waveform of lamp voltage, lamp current, filament current and cathode current, lamp power and oscillation frequency.
Accuracy of V,A:±2%；Accuracy of w:±3%.

4. Pre-heating energy characteristics analysis:

Test RMS values, peak values and variable curves of filament voltage(2.0～30.0V)and filament current(0.010～2.000A), filament power(0.1～45W),pre-start time, preheat ing energy within 0-5s from startup, and the maximum and minimum Pre-heat energy.

Typical testing reports：

                       
Input characteristics of narrow frequency(1)                               Input characteristics of narrow frequency(2)

Output steady-state characteristics (enveloping wave)       Output Steady-state characteristics (individual high-frequency wave)  

               
                                   
Input start characteristics analysis                                                 start characteristics analysis

     Pre-heat energy characteristics analysis