NF WF1973 - Square Wave; Pulse Wave

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7. SPECIFICATIONS
MULTIFUNCTION GENERATOR
Harmonic spurious
*1
Condition: Amplitude setting 0.5 Vp-p to 2 Vp-p/50 Ω 2 Vp-p to 10 Vp-p/50 Ω
1 MHz or lower −60 dBc or lower −60 dBc or lower
1 MHz to 10 MHz −50 dBc or lower −43 dBc or lower
10 MHz to 30 MHz −40 dBc or lower −30 dBc or lower
Non-harmonic spurious
*1
1 MHz or lower −60 dBc or lower
1 MHz to 10 MHz −50 dBc or lower
10 MHz to 30 MHz −45 dBc or lower
Condition: Amplitude setting of 0.5 Vp-p to 10 Vp-p/50 Ω
7.5.2 Square wave
Duty
Variable range selectable Normal, extended (selectable)
Normal range Duty can be changed in range with little jitter and no
pulse loss. The higher the frequency, the narrower the
duty setting range.
Extended range With 2.5 ns rms or less typ. jitter, duty can be changed
always in maximum range. In the case of a pulse width
of 8.4 ns or less, loss may occur; on average, it is equal
to the set duty.
Setting range
Normal range 0.0100% to 99.9900% (0.0001% resolution)
Upper limit (%): 100 − frequency (Hz) / 300,000
Lower limit (%): frequency (Hz) / 300,000
Extended range 0.0000% to 100.0000% (0.0001% resolution)
Duty accuracy
*1
100 kHz or lower ±0.1% of period (duty setting 1% to 99%)
100 kHz to 1 MHz ±1% of period (duty setting 5% to 95%)
1 MHz to 3 MHz ±3% of period (duty setting 40% to 60%)
Rising/falling time
*1
17 ns or less
However, approx. 20 ns in the case of burst oscillation
with stop level setting, gated single-shot sweep with
stop level setting, and sequence oscillation
Overshoot 5% or less typ.
Jitter Normal variable duty range: 300 ps rms or less typ.
(100 Hz or higher)
Extended variable duty range:2.5 ns rms or less typ.
7.5.3 Pulse wave
Pulse width
Duty setting range 0.0170% to 99.9830% (0.0001% resolution)
Time setting range 25.50 ns to 99.9830 Ms (0.001% or less of period, or 0.01
ns resolution)