HP75D and data acquisition unit HP3421A

[KeithB]

(03-07-2024 08:18 PM)hesc Wrote:  Dear Dave and Sylvain,

I got a syntax error for the SENDIO command. The communication modem, however, is not power supplied, i.e. it has no batteries, nor an external power supply. Could that be the problem?

Kind regards,
Henk

The modem is not an HP-IL device, so as long as the computer is running, HP-IL communication should work whether its batteries are charged or not. If the batteries are flat, you may get an error.