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File: SM1180_r9eng - December 2007 - Technical note: SM1180 & TM 060
SM
1180 & TM060
File: SM1180_r9eng - December 2007 - Technical note: SM 1180 & TM 060
page 11
of 35
SM1180 & TM060
Display and LED meaning.
On the front panel there are 2 digital displays, one upon the
other, and on one side there are the status leds. The upper
display and leds are controlled by the main CPU (or “master”
CPU), the lower display is controlled by the secondary CPU
(or “slave” CPU).
The panel potentiometer must be enabled by means of the key
switch located on the rear of the unit: the switch avoid the
presence of both signals at the same time.
Led meaning:
POWER ON:
ON when main breaker is ON and
main line present
MAGNETRON ON: FLASH twice per second during fila-
ment preheating.
FLASH 5 times per second: the fila-
ment is preheated, the unit is ready
ON with Ia> 50 mA.
OVERTEMP.:
OFF with no overtemperature alarm.
FLASHING in case of overtemp.
inside the rack.
ON in case of magnetron overtempe-
rature.
WATCH DOG:
OFF with no alarms
FLASHING in case of arc detection
(an electrical arc occured inside the
waveguide launcher and has been
detected by the arc detector)
ON : shortcircuit present.
OVERVOLTAGE:
OFF with no alarms
ON : magnetron overvoltage (moding)
POWER ON (slave): ON when main line is present
MAX REVERSE:
ON when the signal of the reverse
power exceeds its threshold .
Visualization modes of the upper display
(CPUMaster)
This display usually shows one of the followings (see the
function table):
- anodic current (in mA), or
- anodic voltage (in Vx10), or
- magnetron power (in Wx10)
with the following exceptions:
- when you switch on: all the segments are shortly
lighted up, then appear the
word “mast” for a short time.
- during an alarm condition:
shows an alarm code (A...)
(see the alarms code table)
Visualization mode of the lower display
(CPU Slave)
This display shows the reflected r.f. power (in Wx10) with the
following exception:
- when you switch on: all the segments are shortly
lighted up, then appear the
word “slav” for a short time.