Application Notes: Forward Sweep and Balance
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8. The defacto standard is 2 dB/div for sweeping and 10 dB/div for
spectrum analyzer viewing.
9. Version 9.3 firmware has added a few features worth mentioning.
There is a hard key for Test Point Compensation (func. 7) a hard key
to Select Previous Screen (func. 1) and Password Protection. Also,
the spectrum analyzer is faster and has variable dwell times (only in
the latest generation of Stealth and 4040D meters).
10. You can change the start and stop frequencies in the sweep mode of
the field unit, which makes it easier to move your markers around.
11. Type in the frequency and hit “enter” to make a marker jump to that
frequency.
12. Use "Zoom" to zoom in between the markers.
13. If you don’t know the frequency of a certain channel, use the level
mode. Type in the channel number, hit the "Channel" key, then hit the
"Freq" key.
14. The Tx will transmit/broadcast the ingress from all the return amplifiers
connected to it back to the field unit. This will be transmitted on the
forward telemetry with 280 kHz of resolution. Return continuity is not
needed for this reception. The noise mode on the Rx transmits the
total noise in the headend also, but with a resolution based off the
return channel plan resolution.
15. You can sweep without downloading the channel plan, but other
measurement modes won’t operate correctly, such as the "Tilt" mode.
You must assure the same telemetry frequency.
16. The unit sweeps 4 times before a reference can be taken.
17. The number of sweep points is limited to 500, but inserting too many
will make the refresh of the sweep display slower. The sweep update
time is dependent on the setup.
18. Show Horizontal Markers (Configure, Sweep Receiver) is a nice
feature to view the max peak and valley between the vertical markers.
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