Site Controller - CAN Bus
Chapter 8: Site Controller
Table 8-6
Site Controller - CAN Bus Functionality (Continued)
Unit
Function
•
AC operation only: Prevents DC –fail alarms (and associated LED) from
the PSU on CAN Bus when the PSU is supplied from AC only. If the DC
supply becomes present during AC operation, the DC-Fail alarm circuit
is automatically reactivated.
•
No Fan 1: Prevents Fan 1 alarm (and associated LED) when no fan 1 is
connected. If the Fan1 becomes present during operation, the Fan1 alarm
circuit is automatically reactivated.
•
No Fan 2: Prevents Fan 2 alarm (and associated LED) when no fan 2 is
connected. If the Fan2 becomes present during operation, the Fan2 alarm
circuit is automatically reactivated.
•
No Fan 3: Prevents Fan 3 alarm (and associated LED) when no fan 3 is
connected. If the Fan3 becomes present during operation, the Fan3 alarm
circuit is automatically reactivated.
Refer to MMI Commands manual for additional information on
commands and parameters.
ATCC
Monitoring:
•
Cavity status.
•
ATCC Heartbeat signal: heart beat signal is repeated every 30 s.
Alarms:
•
Software corrupted.
•
Distance between two channels below 150 kHz.
•
Cavity VSWR alarm.
•
Master Slave communication error.
•
Motor alarm.
•
Cavity tuning error alarms together.
•
VSWR exceeded the speci
fi
ed value.
•
Unable to park cavity.
•
Cavity unable to tune to the current frequency in 3 attempts.
Controls:
•
Cavity tune timeout: establishes a timeout period between a
fi
ne-tuning of the
cavities. All cavities must be
fi
ne-tuned at the timeout.
•
Park a cavity: instructs the ATCC to park the speci
fi
ed cavity. This involves
adjusting the cavity resonance to a frequency outside of the Tx band. If RF
power is present, the cavity parks and then re-tunes to the input frequency.
•
VSWR Alarm Threshold: establishes a threshold for enabling a VSWR
Alarm. Valid threshold values are in the range 1.00 to 10.00 where 1.00 means
No VSWR
and recommended values are 3.00 for UHF and 4.00 for 800 MHz.
8-12
6802800U74-N September 2009
Содержание DIMETRA MTS 2
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