Menu Operation | AM64/128A User Manual |
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5.MENU OPERATION
5.1Front Panel Features
The Baseband Modem has an uncluttered and easy to understand front panel. It has a liquid crystal display (LCD), 5 LED’s, and 6
The 6 front panel keys are as follows: |
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MENU (left and right) | Used to change menus. |
SCROLL (up and down) | Used to scroll through items within a menu. |
SELECT | Used to activate/deactivate the feature displayed. |
TX NRDY | Used to send a Not Ready pattern to line. |
| This pattern is termed Controlled Not Ready (CNR) and consists |
| of alternate 1's and 0's with the status line OFF. (Note that the |
| pattern will not be sent if there is a loop back in operation.) |
The LCD display is complemented by the use of 5 LED ‘s to indicate the following :
(1)FAULT (Red LED)
This is lit to indicate the line signal is faulty; the main causes of this are as follows:
(1)No signal received (i.e. line broken / disconnected)
(2)Incorrect line rate
(3)Incorrect user data rate
Further information is provided in the status menu, (see section 5.3.2).
(2)TM, [Test Mode] (Red LED)
This is illuminated when ever a test mode is active, (i.e. a pattern is being generated, or a loop is being applied).
(3)RX NRDY, [Not Ready received from line] (Yellow LED)
This lights whenever a Not Ready pattern is being received (UNR or CNR), and a structured user rate is in use, (a rate which has a status line)
(4)RXD, [Received Data] (Yellow LED)
This indicates the presence of the user data, (on for a '1' / off for a '0').
(5)TX NRDY, [Transmitting Not Ready] (Yellow LED)
This is provided to display the state of the TX NRDY key. On means the TX NRDY key has been pressed.
If the equipment is left in a display other than Status for greater than one minute the display will automatically time out and revert to the top line of the status menu.
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