Print Date 04/01/11 Page 39 of 42 E2165-00MA-04
SECTION THREE : OPERATION
3.1 CONTROLS AND DISPLAYS
Marked
Type
Function
SET POWER
Preset (22T)
Potentiometer
To set output power level (anti-clockwise to reduce power).
MOD
LED Display
Red indicates deviation above 80kHz
Green indicates deviation between 15 and 80kHz
Off indicates deviation below 15kHz
Amber indicates ‘Power-on-Reset’ period
SYSTEM
NORMAL
LED Display
Red indicates one or more system conditions are abnormal.
Green indicates all significant system conditions are normal.
Amber indicates ‘Power-on-Reset’ period
MUTE
LED Display
Red indicates that the Exciter is muted by the external
Interlock circuit.
Amber indicates that the Exciter is muted by the mute control
input or that the ‘Power-on-Reset’ period is in progress.
Green indicates normal operation.
FWD
P.A. LED Display
Red indicates forward output power fail (power fallen more
than approximately 6dB below that required).
Green indicates normal operation.
REV
P.A. LED Display
Red indicates reverse power to Exciter in excess of
approximately 30W (-10dB on 300W, -7dB 0n 150W)
Green indicates normal operation.
TEMP
P.A. LED Display
Red indicates Exciter amplifier heatsink temperature greater
than approximately 85 deg.C.
Green indicates normal operation
CURRENT
P.A. LED Display
Red indicates current (to Amplifier Pallet) in excess of
approximately 11A.
Green indicates normal operation.
CPU
P.A. LED Display
Red indicates amplifier module CPU (microcontroller) failure,
other P.A. LED displays will automatically be turned off.
Green indicates normal CPU operation.
CONTRAST
Preset (1T)
Potentiometer
To set the contrast of Exciter’s liquid crystal display (LCD) for
best contrast in the prevailing viewing and ambient
temperature conditions.
MAIN
Membrane Switch
To directly select the main LCD screen showing the Exciter’s
operating channel and frequency, output forward power,
reverse power and the instantaneous deviation.
MODE
Membrane Switch
To select other Exciter functions (‘modes’) such as system
status and meter monitoring, channel frequencies and any
option settings and status.
∧
Membrane Switch
To step upwards through choices offered in the mode
selected.
∨
Membrane Switch
To step downwards through choices offered in the mode
selected.
Unmarked
‘Soft’ keys
Membrane
Switches
To select various choices offered in the mode selected.
Unmarked
Display
20 Character by 4
line LCD (back
illuminated by-
green LEDs)
Indicates present mode (middle of top line) with status, input
parameters etc. and next key operation choices below.
O
I
Rocker Switch
(on rear panel
of E2165-03 and -
04 variants)
To switch mains supply on (‘I’) or off (‘O’)
Note an internal sounder indicates correct membrane switch key operation by a single beep or an
invalid key input by a short series of beeps.
