Unable to Send NUL, Hex 00, From Serial Port of N3322D
Escalation Article
Written by Richard Gregory
Updated at June 5th, 2026
Table of Contents
Brand:
- AMX
Affected Products:
- AMX-N33E001 - NMX-ENC-N3312D
- AMX-N33E001C - NMX-ENC-N3312D-C
- AMX-N33D001 - NMX-DEC-N3322D
Summary:
When sending a serial command that contains a NUL, Hex 00, from the serial port of the N3322D the command stops at the NUL.
E.G. If you send 31 32 31 33 31 34 the N3300 will send 121314 from the com port as expected; but if you send 31 32 33 00 34 35 36 the N3300 com port will only send 123. The command is stopped at the 00.
Troubleshooting:
Issue fixed in firmware v1.7.0 or higher.