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Agilent 85650A Quasi-Peak Adapter
The 85650A quasi-peak adapter is an
accessory used with the 8566B
or
8568B spectrum analyzers for performing
quasi-peak measurements
as
recommended by CISPR. These
include the correct 6 dB bandwidths
(200 Hz, 9 kHz, 120 kHz) and the
specified detector charge and discharge
time constants.
Specifications
| Frequency Band (MHz) |
Bandwidth at 6 dB |
Charge TC (ms) |
Discharge TC (ms) |
| 0.01–0.15 |
200 Hz |
45 |
500 |
| 0.15–30 |
9 kHz |
1 |
160 |
| 30–1000 |
120 kHz |
1 |
550 |
Quasi-peak Response to CISPR Pulse (dBμV)
| PRF (Hz) |
10 to 150 kHz |
0.15 to 30 MHz |
30 to 1000 MHz |
| 1000 |
— |
64.5 ± 2.5 |
68.0 ± 2.5 |
| 100 |
64.0 ± 2.5 |
60.0 ± 1.5 |
60.0 ± 1.5 |
| 60 |
63.0 ± 2.5 |
— |
— |
| 25 |
60.0 ± 1.5 |
— |
— |
| 20 |
— |
53.5 ± 2.5 |
51.0 ± 2.5 |
| 10 |
56.~± 2.5 |
50.0 ± 3.0 |
46.0 ± 3.0 |
| 5 |
52.5 ± 3.0 |
— |
— |
| 2 |
47.0 ± 3.5 |
39.5 ± 3.5 |
34.0 ± 3.5 |
| 1 |
43.0 ± 3.5 |
37.5 ± 3.5 |
31.5 ± 3.5 |
| Isolated Pulse |
41.0 ± 3.5 |
36.5 ± 3.5 |
28.5 ± 35 |
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