HP 8340A Operating Manual page 201

WAIT
The worst-case time of 16 ms covers random step sizes.
sizes of Jess than 1 GHz, the
(WAIT
hardware settling times
frequency step sizes. The results are shown in TABLE 1 below.
switchpoint and takes 200 MHz steps, the hardware settling time is typically 5 ms, which, when added to the 6 ms of
processor time, gives a total typical switching time of 12 ms.
FREQUENCY
STEP SIZE
GHz
1
500 MHz
200 MHz
100 MHz
10 MHz
5 MHz
2 MHz
1 MHz
<l MHz
Random
Step Size
TABLE 1. Typical Step Sizes and Hardware Settling Times or WAIT Times.
1
Bands are:
0.01 to
2.3
to
7.0 to <13.5 GHz
13.5 to <20.0 GHz
20.0 to <26.5 GHz
WAIT
times can be reduced.
)
times needed for the frequency to settle within 1 kHz of its final value for various
FREQUENCY
SPAN
l
Within bands
(without crossing
bandswitch points)
190 MHz
and within bands l
Within the whole
range of 8340A
0.01 to 26.5 GHz
<2.3 GHz
<7.0 GHz
Scans by HB9HCA and HB9FSX
However, when an application calls for discrete step
Some 8340A' s were characterized to determine the
For instance, if the user does not cross a band
TYPICAL HARDWARE
SETTLING TIMES
(OR WAIT TIMES)
10 ms
12 ms
6 ms
11 ms
5 ms
9 ms
8 ms
5 ms
<5 ms
16 ms
TYPICAL TOTAL
SWITCHING TIMES
(TO BE WITHIN 1 kHz
OF FINAL FREQUENCY)
16 ms
18 ms
12 ms
17 ms
11 ms
15 ms
14 ms
11 ms
<11 ms
22 ms
5