7.3 Performance tests
WF1946B 7-9
Time difference between channels
Connections: CH1 Function Out to universal counter input 1 (50 Ω terminated)
CH2 Function Out to universal counter input 2 (50 Ω terminated)
Use the same length and same type coaxial cables.
Settings: After setting initialize, set channel mode 2PHASE, amplitude 20 Vp-p/open (CH1 and
CH2), CH2 phase 180 deg, and frequency and waveform according to the following
table.
Measurement: Set timer mode between counter inputs 1 and 2, and measure the time difference
between CH1 and CH2. Set the counter trigger level to 0 V and the trigger polarity to
rising for both inputs 1 and 2. Use the average value, since dispersion occurs in the
measured values.
Determination: The ranges indicated in the following table are normal.
Waveform Frequency Rating range
10 MHz 40 to 60 ns
(duty 50 % fixed) 10 MHz 40 to 60 ns
500 kHz 990 to 1010 ns
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