Comtech EF Data CLC-10 - Manual (Page 35)

CLC-10 Comtech LPOD Controller Handheld Terminal M&C Accessory Revision 3
Serial-Based M&C using the CLC-10 MN-CLC10
3–3
3.3.4 Faults
The M&C system monitors certain key functions of the SSPA for proper operation. Should any of these parameters exceed
predetermined limits, the M&C system will declare a fault. The conditions that trigger a fault are:
• Any power supply more than ± 10% outside its nominal value.
• Fan less than 25% of maximum speed.
• I2C internal bus communications fault.
• Thermal Shutdown – A temperature fault is indicated if the unit is +>90°C. This creates a summary fault and will cause the unit
to mute itself and switch to the back-up unit (if in a redundant system). However, the 10V supply to the FET transistors will
remain on until the unit reaches the thermal shutdown temperature of ≥ >95°C. For protection reasons, the unit will shut down
the 10V supply to the power transistors at temperatures >95°C.
• Firmware checksum error at power up.
• FPGA done indicator error at power up.
• *Block upconverter (BUC) unlocked.
• Redundant waveguide switch position fault (applies to redundant mode operation only).
• Redundant inter-unit link fault (applies to redundant mode operation only).
• Low noise block converter (LNB) current over limit.
The following parameters can be user defined to report an alarm condition, a fault condition, or the parameter can be ignored
completely by masking it:
• RF amplifier low output power (user adjustable value)
• Internal reference oscillator unlocked
• *LNB converter current outside specified window
• *LNB voltage out of tolerance
*NOTE: If this parameter generates a fault condition, the RF output will be muted.