IR receiver ignoring IR pulse

[richard]

from the data sheet

Suitable Data Format
• Burst length should be 10 cycles/burst or longer.
• After each burst which is between 10 cycles and 70
cycles a gap time of at least 14 cycles is necessary

• For each burst which is longer than 1.8 ms a corresponding
gap time is necessary at some time in the
data stream. This gap time should be at least 4 times
longer than the burst.
• Up to 800 short bursts per second can be received
continuously.

their optic test indicates a stream of 60uS on 600uS off pulses try that