The probably first full DMX512 protocol analyzer within a simple 5pin
male XLR plug. Combining high integrated logic with up to date design
solutions allows use to put a bus-powered tester into a simple XLR plug.
But be aware, others a only able fitting simple LED resistor combination
The MicroTest first tries to find out, which polarity the DMX512 signal
has, then if checks the break-time to be greater or equal than
88µs. It then continued by reading the first byte and checking for
the two stop bits. If the received byte was equal to zero, all tests are
passed and the result is a blink with the green LED for the correct
polarity or with red and green (resulting in orange light) for inverted
polarity. If any of the mentioned tests fails the MicroTest will try
again. But if a one second time out lints up without of success a read
blink will display that something is happening on the line, but can not
be interpreted as useful DMX512 signals.
The MicroTest is available in two versions:
This is the more enhanced version, it does the polarity checks, as
described, but need frames with start-codes equal to zero.
This version is optimized for the upcoming DMX512-2000: it does
not do the polarity checks but does not rely on start-code to be
for more information check also