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PSM-500/500L/500LT SCPC Satellite Modem
Notice now that we can select from the Status, Configuration, Keyboard, etc. columns of the Unit
Matrix. Selecting for example the "Test" item (selection 9), would display the following new
screen.
Mod ? 0)Status, 1)IF, 2)Data, 3)Alarm, 4)Test
Strike Number/Letter of Option to Select, TAB Key Aborts Selection.
Figure 3-3. Terminal Mode – Example of Unit Test Screen
Notice that some items have a preceding letter with parentheses. These items are programmable
via the communications interface. Items without a preceding letter in parentheses are "Read
Only" items.
Any available "screen" can be displayed with only two keystrokes. These are similar to
designating the functional area and column of a matrix as when using the front panel.
3.3.2 Programming Modem Operational Values From the Terminal Screens
The modem can be interactively monitored and controlled in the Terminal mode, with a full
screen presentation of current settings and status. Programming is accomplished by selecting
first the desired screen, then the item to be modified and pressing the terminal key of the option
letter "A" through "Z". For example, to change the modulator's carrier frequency you must first go
to the modulator screen if not already there (Press "1, 1") and press the terminal's "A" key (lower
case is fine!). The modem screen will respond by presenting the options, or input range, available
and waiting for input. The operator input is followed by pressing the "Enter" or carriage return key.
An input can be aborted at any time before completing by pressing the "TAB" key, restoring the
previous setting. Invalid input keys are signaled by a beep or bell signal from the terminal.
Following a valid input, the modem will place the new setting into the nonvolatile EEPROM
making it available not only immediately but also automatically the next time the unit is powered
up.
PSM-500/500L/500LT - Rev. 0.91
PSM-500 VT100 Terminal Control
Unit Test
A) Modem BER Test
B) Cal Ref Disabled
Ref AFC +1.1V
SysClk AFC +9.3V
+3.3V Power +3.3V
+5.0V Power +5.0V
+12.0V Power +12.0V
+21.0V Power +20.8V
-12.0V Power -12.2V
J) Boot Code 0000:0000:0000
Operation
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