Least Active:
The Least Active menu is similar to the Most Active, except it keeps track of the site with the least
number of hits. If more than one site has the least COR counts, the first site with the least number of hits
encountered by the software will be chosen.
Sites that are disabled are not eligible to be selected as the Least Active site.
There are no user inputs for this menu.
2
Least Active
Hysteresis:
The Hysteresis menu display the currently selected hysteresis level (0 to 8). The hysteresis level is
the amount of signal to noise ratio improvement needed over the currently voted site before a new site will be
voted. The lower the hysteresis level selected, the smaller the amount noise improvement needed for a new
selection. Some amount of hysteresis should be used with all systems. Not enough hysteresis will result in
constant switching that may sound annoying. Too much hysteresis may result in large, noticeable changes in
audio when switching from noisy to quite site (or vice versa). A typical value used may be between 3 and 6.
In the RVS-8, the signal to noise ratio for each channel is represented internally by a number that has
a value between 0 and 255, with a higher number meaning higher signal (better signal/noise ratio). This
number can be viewed with the Channel S/N menu.
Each step of the hysteresis level is equal to 6 counts of the internal number. A hysteresis value of 5
means that a new signal must be 30 counts (5 times 6) higher than the currently voted signal before it will
become the newly voted channel.
The Sel or Data switch can be used to cycle the Hysteresis through the selections. When the selection
reaches 8, the next selection is 0. The Hysteresis data is stored in serial EEPROM.
Note: The 0 selection is recommended for testing purposes only. Since the software can update at 30
times per second, the 0 selection will allow sites to switch at that same rate and an audible 30 Hz buzz can
sometimes be heard.
Value = 4
Hysteresis
Disabled Chans:
The Disabled Channels menu show which channels are currently disabled. There are two ways to disable
a channel, by hardware or software. To disable the channels by software, press the Menu switch until
“Disabled Channels” is displayed on line two of the LCD module. Then press the Select switch until the desired
channel has the cursor, then press the Data switch to toggle between on or off. If the number is showing on the
display, the channel is disabled. If the number is not showing, it is not disabled by software or hardware.
To disable channels by hardware, an external connection must be made to the RVS-8 via J3. Depending
on how the Disable Active State is programmed for each channel, the voltage on each corresponding pin
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