Off Line Mode; Auto-Operate Enabling And Disabling; Antenna Output Assignment; Reading Auto-Protection Signatures - Acom ACOM2100 Operating Manual

5. OFF LINE MODE

There are two control functions and 14 information screens available in the Off Line Mode of the amplifier.
You may enable/disable the Auto-Operate feature and assign the antenna outputs. You may also list
the auto-protection signatures. The tube is not powered at all (only the micro-controller is active) during
these operations.

5-1. Auto-Operate enabling and disabling

When enabled, this function will maintain the amplifier in OPER MODE automatically - see S.4-2. The
OPER button will be still functional, so you can change to STANDBY and return to OPERATE manually
at any time. The auto-operate function will be disabled temporarily when you enter the STANDBY mode
but it will be restored after you return to OPERATE by depressing the OPER button.
After having selected the display brightness (see the previous S.5-1), you may continue depressing the
PREV+NEXT buttons in order to enable or disable the Auto-Operate feature. The "Auto Operate = ..."
screen will appear on the bottom line. Use the PREV button to select OFF or the NEXT button to select ON.
Briefly press the PREV+NEXT buttons again in order to reach the last control function – the antenna
outputs assignment (see the next S. 5-3). Alternatively, you may leave the buttons unused for 20 seconds.
In any case, the selections made so far will be retained in the amplifier's memory.

5-2. Antenna output assignment

If there is no antenna connected to an antenna output then the output should be disabled. This will make
the switching between two available antennas easier and, more important, it will prevent potentially
damaging the amplifier by no-load transmissions.
In order to enable or disable an antenna output, briefly press PREV+NEXT buttons successively until the
"Ant:(1-...) 2-...3-..." screen appears. Using the ANT button, move the brackets to enclose the antenna
output you want to disable or enable. Press the PREV button to disable or NEXT to enable it. Press
PREV+NEXT briefly again to confirm the antenna output assignments and then leave the menu.
All selections you make are stored in the amplifier nonvolatile memory. If no button
is pressed for 20 seconds, the selections made so far are accepted and the control
function is left automatically.

5-3. Reading Auto-protection Signatures

On every Hard Fault protection trip of the amplifier, signature information is stored in its nonvolatile
memory. The 7 most recent auto-protection trip signatures are stored there, which may be forwarded to
your dealer for diagnostics.
In order to read the trip signatures, press the OPER button while OFF LINE. The display will illuminate
at full brightness and the beginning of the signatures list will appear. Use NEXT and PREV buttons
to navigate through the 7 pairs of screens. For each auto-protection trip there is a pair of information
screens, beginning with nA... and nB... where:
- "n" is the successive number of the event (nr.1 is the latest, nr.7 is the oldest one);
- A and B mark the first and second parts of an information screen pair.
Two lines, three groups by six symbols (36 symbols in total) are to be copied concerning every one of
the 7 memorized events, from 1A-1B through 7A-7B.
To decode the signatures please see S.6-5 (Troubleshooting).
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