Making Measurements Using Spectrum Analyzer Mode
Using the
To use ‘lkble
•Determine the pulse width of the signal you want to measure, then use able
•Determine the pulse repetition rate of the signal, then use ‘Ihble
N O T E
The peak detection mode is recommended for making gated measurements.
Table
Gate Delay, Resolution Bandwidth, Gate length, and Video Bandwidth Settings
Pulse width |
| Gate | Resolution | Gate | Video | ||||||
|
|
| Delay | Bandwidth | length | Bandwidth | |||||
1 0 | ,us |
| 5 | ps” | 1 | MHz | 3 | PS | 1 |
| MHz |
50 | ps |
| 2 5 | ps | 1 0 0 | kHz | 1 3 | ps | 1 0 0 |
| kHz |
6 3 . 5 | ps |
| 3 2 | ps | 1 0 0 | kHz | 1 6 | ps | 1 0 0 |
| kHz |
1 0 0 | /&s |
| 50 | ,us | 1 0 0 | kHz | 2 5 | ps | 1 0 0 |
| kHz |
5 0 0 | ps |
| 250 | ,us | 1 0 | kHz | 1 2 5 | ps | I | O | kHz |
1 | ms |
| 500 | ps | I O | kHz | 250 | p | I | O | kHz |
5 | ms |
| 2 . 5 | m s | 1 | kHz | 1 . 2 5 ms | 1 |
| kHz | |
1 0 | m s |
| 5 | ms | 1 | kHz | 2 . 5 | m s | 1 |
| kHz |
1 6 . 6 | m s |
| 6 . 3 | ms | 1 | kHz | 4 | m s | 1 |
| kHz |
3 3 | m s |
| 1 6 . 5 m s | 1 | kHz | 6 | m s | 1 |
| kHz | |
5 0 | m s |
| 2 5 | ms | 1 | kHz | 1 3 | ms | 1 |
| kHz |
1 0 0 | m s |
| 5 0 | m s | 1 | kHz | 2 5 | m s | 1 |
| kHz |
1130 m s |
| 6 5 | m s | 1 | kHz | 3 3 | m s | 1 |
| kHz |
When using the short gate delays, you may notice the gate delay time jitter by fl ps. This jitter is due to the spectrum analyzer’s 1 MHz gate clock, and it does not indicate a problem .