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5. OFF LINE MODE
There are two control functions and I4 information screens available in this state of the
amplifier. You can control the VFD brightness, enable/disable the Auto-Operate feature, and
assign the antenna outputs. You can also list the auto - protection signatures. The tube is
not powered at all (only the micro-controller is active) during these operations.
5-1. Display brightness control
Press the PREV+NEXT buttons simultaneously and the “Brightness=…" screen will appear on
the bottom line. Use the NEXT button to control
the display brightness in steps from 1 to 4.
Press shortly the PREV+NEXT buttons in order to reach the auto-operate function (see next
S.5-2), or leave the buttons unused for 20 seconds if you want to accept these selections
only (in order not to change Auto-Operate inadvertently).
5-2. Auto-Operate enabling and disabling
When enabled, this function will maintain the amplifier in OPER MODE automatically
- see
also S.4-2. The OPER button will be still functional anyway, so you'll be able to change to
STANDBY and return
back to OPERATE mode manually when you want at any time. The
auto-operate function will be disabled temporarily when you enter STANDBY mode but it will
be restored after you return to OPERATE by the
OPER button.
After having selected the display brightness, (see the previous S.5-I) you may keep on
pressing 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 button
NEXT to select ON.
Press shortly 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 if you want to exit this menu without exciting it. In any case, the
selections made so far will be memorized.
5-3. Antenna outputs
assignment
If there is no antenna connected to an antenna output it could be disabled. This will make the
switching between two available antennas easier and, which is more important, will prevent
inadvertent no load transmissions.
In order to enable or disable an antenna output, press shortly PREV+NEXT buttons
successively until the “ Ant:(1-…) 2-…3-…” screen appears. Using the button ANT, 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 shortly again to confirm the antenna
outputs assignment and leave the menu.
N O T E
All selections you make are stored in the amplifier nonvolatile memory to
be used also thereafter. If no button is pressed within 20 seconds, the
selections made so far are accepted and the control function is left
automatically.
5-4. 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 related to the
amplifier internal status are stored there, which you can copy and forward to your dealer for
diagnostics.
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