Motorola DIMETRA MTS 2 Installation, Configuration And Basic Service Manual page 288

Site Controller - CAN Bus
Table 8-6 Site Controller - CAN Bus Functionality (Continued)
Unit
ATCC
8-12
• 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.
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 specified 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 fine-tuning of the
cavities. All cavities must be fine-tuned at the timeout.
• Park a cavity: instructs the ATCC to park the specified 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.
Function
6802800U74-N September 2009
Chapter 8: Site Controller