Atec Agilent-E9320 Series - Manual (Page 11)

11
Settling times
Average-only mode:
In normal and x 2 speed, manual filter, 10 dB decreasing power
step refer to Table 12.
In fast speed, within the range –50 to +20 dBm, for a 10 dB
decreasing power step, the settling time is 10 ms (for the E4416A)
and 20 ms (for the E4417A).
When a power step crosses the power sensor’s auto-range switch point,
add 25 ms.
Normal mode:
In normal, free run acquisition mode, within the range –20 to +20 dBm,
for a 10 dB decreasing power step, the settling time is dominated by
the measurement update rate and is listed in Table 13 for various filter settings.
In normal mode, measuring in continuous or single acquisition mode,
the performance of rise times, fall times and 99% settled results are shown
in Table 14. Rise time and fall time specifications are for a 0.0 dBm pulse,
with the rise time and fall time measured between 10% to 90% points and
upper range selected.
Overshoot in response to power steps with fast rise times, i.e. less than the
sensor rise time, is < 10%. When a power step crosses the power sensor’s
auto-range switch point, add 10 μs.
Table 12. Settling time (average only mode)
Number of average 1 2 4 8 16 32 64 128 256 512 1024
Settling time(s) normal 0.08 0.13 0.24 0.45 1.1 1.9 3.5 6.7 14 27 57
Settling time(s) x 2 0.07 0.09 0.15 0.24 0.45 1.1 1.9 3.5 6.7 14 27
Table 13. Settling time (normal mode)
Number of averages 1 2 4 8 16 32 64 128 256 512 1024
Settling time free run 0.1 0.15 0.25 0.45 0.9 1.7 3.3 6.5 13.0 25.8 51.5
acquisition, normal speed (s)
Settling time free run 0.08 0.1 0.15 0.25 0.45 0.9 1.7 3.3 6.5 13.0 25.8
acquisition, X2 speed (s)
Table 14. Rise and fall times versus sensor bandwidth 1
Sensor model Parameter Video bandwidth setting
Low Medium High Off
E9321A, Rise time (< μs) 2.6 1.5 0.9 0.3
E9325A Fall time (< μs) 2.7 1.5 0.9 0.5
Settling Time (rising) (< μs) 5.1 5.1 4.5 0.6
Settling Time (falling) (< μs) 5.1 5.1 4.5 0.9
E9322A, Rise time (< μs) 1.5 0.9 0.4 0.2
E9326A Fall time (< μs) 1.5 0.9 0.4 0.3
Settling Time (rising) (< μs) 5.3 4.5 3.5 0.5
Settling Time (falling) (< μs) 5.3 4.5 3.5 0.9
E9323A, Rise time (< μs) 0.9 0.4 0.2 0.2
E9327A Fall time (< μs) 0.9 0.4 0.2 0.2
Settling Time (rising) (< μs) 4.5 3.5 1.5 0.4
Settling Time (falling) (< μs) 4.5 3.5 2 0.4
1. Rise and fall time specifications are only valid when used with the E9288A sensor cable (1.5 meters).