NF FRA51602, Инструкция по эксплуатации

Страница: 149 / 286

4.4 Integration
4
-
19
FRA 51602
must be performed at least three times to obtain the statistic.) Furthermore, it is not possible to predict
the time required to finish the sweep in advance. Before using automatic integration, you should
perform preliminary experiments.
■ Integration settings
This sets the number of integration rounds or duration for the manual integration mode (FIX), and the
upper limit in automatic integrarion mode.
The integration setting is set as the number of integration times (cycles) or as a duration (s). When set as a
duration, the value is converted to a number of cycles internally for operation of the instrument.
Regardless of the setting, integration is necessarily performed at least one time.
The measurement time for each frequency varies with the number of integrations and the measurement
frequency (f [Hz]). The measurement time (s) is estimated as described below, where N is the number of
integration cycles.
(When the number of integration cycles is from 1 to 11)
○ When the sweep density setting (
【
Sweep
】－
[SWEEP RESOLUTION]
) is 200 or less
・
f < 1.36 kHz : (1/f) × N
・
1.36 kHz
≦
f < 50 kHz : (1 ms to 1.5 ms) × N
・
50 kHz
≦
f : approximate 0.5 ms × N
○ When the sweep density setting (
【
Sweep
】－
[SWEEP RESOLUTION]
) is from 201 to 20,000
・
f < 1.36 kHz : (1/f) × N + 1 ms
・
1.36 kHz
≦
f < 50 kHz : (1 ms to 1.5 ms) × N + 1 ms
・
50 kHz
≦
f : approximate 0.5 ms × N + 1 ms
(When the number of integration cycles is from 12 to 1,677)
・
f < 1.36 kHz : (1/f) × (N
－
11) × 12
・
1.36 kHz
≦
f < 3 kHz : (1 ms to 1.5 ms) × (N
－
11) × 12
・
3 kHz
≦
f : approximate 20 ms × (N
－
11)
(When the number of integration cycles is from 1,678 to 20,000)
・
f < 1.36 kHz : (1/f) × 20,000
・
1.36 kHz
≦
f < 3 kHz : (1 ms to 1.5 ms) × 20,000
・
3 kHz
≦
f : approximate 20 ms × (N
－
11)