| 1 |
Soft |
Receive PIN back bias voltage not at minimum required level with key down and no RF drive. |
| 2 |
Hard |
Five volt supply voltage too low. |
| 3 |
Hard |
Five volt supply voltage too high. |
| 5 |
Hard |
Plate voltage abnormally low. |
| 6 |
Hard |
Plate voltage abnormally high. |
| 7 |
Soft |
Cathode and/or power PIN diode back bias (-109V) not switching to the required low level with key down. |
| 8 |
Soft |
Transmit PIN diode back bias below minimum required value key up. |
| 9 |
Soft |
Transmit PIN diode forward current below minimum required value key down. |
| 11 |
Soft |
Transmit PIN diode forward current exceeds maximum limit key down. |
| 12 |
Soft |
Excessive input reflected power. |
| 13 |
Soft |
Excessive and unsafe drive power. |
| 14 |
Soft |
Excessive load reflected power or RF voltage. May be caused by excessive load VSWR at an otherwise acceptable power (e.g. 4:1 at 1.5 kW) or excessive power at otherwise acceptable load VSWR (e.g. 2.5 kW at 1.9:1). |
| 16 |
Soft |
Plate current greater than 1.35 amp for more than 4 seconds continuous. Note: The IP button LED flashes for several seconds before a fault 16 IP trip occurs. |
| 17 |
Soft |
Abnormally low or high amplifier power gain. Usually due to extreme mis-tuning or possibly an RF arc. |
| 18 |
Soft |
Filament current less than 2.0 amp. Possible open tube filament. |
| 20 |
Soft |
Filament current greater than 3.5 amp. Possible shorted filament. |
| 21 |
Soft |
Excessive tube temp. in transmit (key down); abnormal dissipation and/or insufficient airflow. |
| 22 |
Hard |
Control system fault; D/A feedback) not working. |
| 23 |
Hard |
Control system fault; D/A feedback 1 not working. |
| 24 |
Hard |
System voltage fault. High voltage, +/-15 volts, or 109 volts below safe operating level. |
| 26 |
Soft |
RF drive before or without amplifier keyed (possibly mis-sequenced T/R), or attempted automatic band change with excessive RF drive. |
| 29 |
Soft |
Attempt to transmit on invalid frequency, such as above 24 MHz without unlocking 24-30 MHz coverage. |
| 31 |
Soft |
Excessive grid current; above 100mA continuously for 2 seconds. NOTE: Red LED in IG bargraph flashes before IG trip occurs. |
| 33 |
Soft |
Control system fault; TUNE capacitor not initializing. |
| 34 |
Soft |
Control system fault; TUNE capacitor not moving or zero sensor position not working. |
| 35 |
Soft |
Control system fault; LOAD capacitor not initializing. |
| 36 |
Soft |
Control system fault; LOAD capacitor not moving or zero sensor not working. |
| 37 |
Hard |
Control system fault; Bandswitch not moving. |
| 99 |
Fault 99 |
Unit refuses to turn on. Same hard fault occured 6 consecutive times without one successful power-up. |