Print Date 04/01/11 Page 41 of 42 E2165-00MA-04
3.2.5 METER Display Mode
If ‘Meter’ mode is selected, pressing the [
∧
] or [
∨
] keys steps through various system status levels
(forward and reverse power, heatsink temperature, amplifier current, high and low voltages etc.).
Levels are shown simultaneously in horizontal bargraph form and as actual digital values.
Values are shown in ‘real-time’ apart from the digital display of deviation, which captures and then
holds the peak level of deviation for a period of approximately 1 to 2 seconds. This level is shown both
in kHz and in percentage (of 75kHz). The bargraph display of deviation remains ‘real-time’ with no
peak hold.
Note that when ‘Meter’ mode is entered directly after checking a specific status in ‘System’ mode
which has a variable level, such as heatsink temperature, then the first ‘Meter’ mode display will be of
that level (see section 3.2.3). This allows rapid checking of any system status faults discovered.
3.2.6 FREQ Display Mode
If ‘Frequency’ mode is selected, pressing the [
∧
] or [
∨
] keys steps through the contents of the eight
channel frequency stores. In this mode, the frequencies stored can also be altered and different
channels selected for transmission (see sections 2.3.3/4/5) by pressing the [soft keys] as marked,
below the LCD.
Note that channel 0 is solely for the entry of new frequencies in the range 87.5 to 108MHz (they
cannot be directly entered into any other channel). The channel 0 setting can then be transferred into
any of channel 1 to 7 that is displayed as having a ‘stored frequency’, i.e. one that is not presently
selected for transmission.
The channel selected for transmission is displayed as ‘ext. selected’ when it has been selected by one
of the external channel lines being held low (channels 2 to 6 only- see section 2.3.5). Otherwise it is
displayed as ‘int. selected’ (i.e. selected from the front panel or remotely, or by one of the external
channel lines which is no longer being held low).
Any of channels 1 to 7 can be selected for transmission unless the presently selected channel is
displayed as ‘ext. selected’ – holding an external channel select line low ‘locks’ the Exciter onto that
channel to prevent unauthorised changes to output frequency.
