Eddystone S79005 Installation And Operation Manual - page 32
Print Date 08/04/14 Page 32 of 34 S79005-00MA-05
3.2 MANUAL CONTROL
Simple manual control of the Transmitter can be performed using the three way lockable toggle
switches on the front of the E2026 Drive Changeover/Output Monitor Unit.
The AUTO – MUTE – START switch can be used to manually mute or start (demute) the Transmitter.
The AUTO – SELECT A – SELECT B switch can be used to manually select Exciter/Drive A or B.
As long as neither switch is in the AUTO position, the E2023 Controller can be removed without
affecting Transmitter local operation (although no display of actual output power will be present). In
this situation, individual modules and units will still display their own status on red/green LEDs.
Note that it is important that these switches are only left in their AUTO positions (as required in
Section 3.4) if the automatic operations described in Section 3.4 are actually in use.
3.3 MANUAL MONITORING
The E2023 Controller Unit is primarily used to monitor the Transmitter’s final output power etc. and to
monitor the state of each individual E2021 Amplifier Module. Other functions are available which
mainly relate to the automatic control optional features.
To display the Transmitter’s final output forward and reflected powers, press [MAIN] on the E2023
Auto Controller front panel. No matter what state the Controller is in, pressing this key will always
display the final output power. A short beep from the internal sounder indicates a valid key press. In
this state, the E2023 will monitor the output power (via the E2026 Drive Changeover/Output Monitor
Unit) several times per second. It also polls through the E2021 Amplifier Modules to internally record
their power, temperature and current status.
To display individual E2021 statuses, press [MODE] then the soft key on the horizontal row beneath
‘Amps’ on the LCD display. A short beep from the internal sounder indicates each time a valid key is
pressed (if a non-valid key is pressed then several short beeps are sounded together). An individual
E2021 status can be displayed by pressing the [∧] or [∨] keys on the left hand side of the LCD display
to select that E2021’s number. The E2021s are numbered left to right. Thus they start at number ‘1’ on
the left hand side and end at number ‘4’. It is important to note that amplifiers 2 and 3 are not present
on the S79005 and thus display ’Status not present’. When an individual E2021 is being monitored in
this way, the output power continues to be monitored but not displayed. To display the output power
again, just press [MAIN] as previously described.
NOTE that when Amplifier Module status is being
interrogated via remote monitoring, the E2023 mode must be left in ‘MAIN’ to ensure that the
Modules continue to be polled and their latest status recorded (section 2.4.3).
If the forward power status (via the E2026 Drive Changeover/Output Monitor Unit) or the status of an
individual E2021 Amplifier cannot be read by the E2023 over the internal RS485 buses, the LCD
display will show ‘Status not present’ in place of the expected readings. This will happen if a module is
removed or if a fault exists in the monitoring circuitry (and in the case of amplifier ‘slots’ 2 and 3).
In all modes, if the Transmitter is muted by the front panel switch on the E2026 Drive
Changeover/Output Monitor Unit, the amber ‘FWD’ led of the E2021 being monitored will flicker.
If any overall ‘System Normal’ status has failed, the front panel SYSTEM NORMAL led will change
from green to red. To display individual overall ‘System Normal’ statuses, press [MODE] then the soft
key on the horizontal row beneath ‘System’ on the LCD display. An individual status can then be
monitored by pressing the [∧] or [∨] keys on the left hand side of the LCD display. To display the
output power again, press [MAIN] as previously described.