Worth Data 802 RF Uživatelský manuál stáhnout pdf (Strana 18)

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FieldFox

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S11 Vector measurement, S11 magnitude and S11 phase. Speciﬁcation is listed under Cable and

antenna analyzer section (S11/Return loss).

S21 Scalar measurement, S21 magnitude. Speciﬁcation is listed under transmission measurement.

S21 requires Option 110 transmission measurement.

A Reﬂected power

R Source power

   Log, linear, phase, VSWR, Smith chart, polar, group delay, unwrapped phase

  

Mechanical cal

QuickCal

Normalization

IF bandwidth selections

300 Hz, 1 kHz, 3 kHz, 10 kHz and 30 kHz

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101, 201, 401, 601, 801, 1001, 1601, 4001, 10,001 (custom number of points can be set using SCPI)

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Using time domain, data from transmission or reﬂection measurements in the frequency domain are converted to the time domain. The

time-domain response shows the measured parameter value versus time.

Time stimulus modes

Low-pass step This stimulus, similar to a traditional time domain reﬂectometer (TDR) stimulus waveform, is

used to measure low-pass devices. The frequency-domain data should extend from DC

(extrapolated value) to a higher value.

Low-pass impulse This stimulus is also used to measure low-pass devices.

Bandpass impulse The bandpass impulse stimulates a pulsed RF signal and is used to measure the time-domain

response of band-limited devices.

Windows

The windowing function can be used to ﬁlter the frequency-domain data and thereby reduce overshoot and ringing in the time-

domain response.

Gating

The gating function can be used to selectively remove reﬂection or transmission time-domain responses. In converting back to

the frequency domain the effects of the responses outside the gate are removed.

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Worth Data 802 RF Uživatelský manuál Strana 18