BEL constant in MAINDEC-8E-D0AB-PB

[Pontus Pihlgren]

Hi

I've been running and looking at the PDP-8/E INSTRUCTION TEST 1. And it 
is supposed to write the BEL (07) character after each round of passed 
tests. However the code loads and outputs the constant "0207", which is 
07 with the eigth bit set. I think the 8/E serial interface outputs all 
eight bits in this case?

I suppose a real ASR-33 would ignore the eight bit?

Why does the code not load 07?

Thank you,
Pontus.