Pathway DMX Dart Users Manual - Manual (Page 29)

DMXDart Operation
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The packet counter (top right of the display) begins to count the DMX data
packets received. To cycle the display between the minimum, nominal (average)
and maximum values, press the Ü key to move the cursor below the value being
received. Then press the Ý or Þ to change to the desired parameter.
The parameters that can be analyzed are:
BRK – Break Length
MAB – Mark after break
MBF – Mark Between Frames
MBP – Mark between packets
BTB – Break to Break
FPP – frames per packet
PPS – packets per second.
If the parameter being analyzed is outside of the recommended specification for
USITT DMX512-1990, an error message will be displayed beside the abnormal
value.
TIP:
For more information on DMX characteristics, please refer to United States
Institute for Theatre Technology DMX512/1990 Digital Data Transmission
Standard for Dimmers and Controllers. This publication is available for purchase
at http://www.usitt.org
Receive DMX Setup
Within Rx Setup, 3 parameters can be adjusted to tailor the way DMX receive
functions display and operate.
•
Start Code Select – View data for a single, user defined, start code
•
Termination – Turn on DMX termination when the DMXDart is the last
DMX receiving device in a daisy chain.
•
Thru-trans control – Set the output port (DMX thru) off, as a direct pass
through, or transmit a regeneration of the incoming signal. When
regenerating the signal, the DMX “flavor” can be chosen, effectively acting
as a DMX to DMX converter.
Flicker Finder
The Flicker Finder is a long-term test designed to detect fluctuating levels
(corrupt data) within a static DMX512 signal. The test compares a snapshot, or
individual packet of DMX512 levels against every incoming packet, and displays
inconsistencies. To test a DMX transmission device for “flickers”, go to DMX
transmit mode (Main Menu 1) and set a static look of DMX Levels such as 1-512
@ 50.