Fluke 5730A Operator's Manual page 205

3918 A5: 40 DB Output Attenuation Fault
3922 A5/A6: Wideband Initialization Fault
3923 A5: 8255 Was Reset
4000 Bad Sequence ID
4001 Over Nested Subsequences
4002 Bad Sequence Command Code
4003 Bad Reply Size From Inguard
4004 Reply From Inguard Too Small
4005 False MSG Semaphore from Inguard
4006 Inguard CPU POP
4007 Inguard CPU Reset
4008 Inguard CPU A/D Timeout
4009 Inguard CPU Timed Out On Main CPU
4010 Inguard CPU Detected A Command Error
4012 Sequencer Timed Out Waiting For Inguard
4013 Illegal Analog State Command For 5725
4014 Sequencer Timed Out Waiting for 5725
4015 Could not Queue Command To 5725 BX
4016 Reply From 5725 Was Garbled
4100 Bad Virtual channel
4101 Framing
4102 Input Queue Overflow
4103 Overrun
4104 Parity
4105 Uart Failed Self Test
4107 Remote Interface UART
4108 Remote Interface USB
4109 Guard Crossing UART
4110 Boost Crossing UART
4000-Level Faults: Analog Sequencing
4100-Level Faults: Serial Interface Driver
A
Appendices
Fault Codes
A-23