The menus
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S
S
S
P
P
P
V
V
V
E
E
E
N
N
N
X
X
X
V
V
V
&
&
&
0
0
0
$
$
$
%
%
%
X
X
X
V
V
V
Hexadecimal
‘The Wife’ DMX Tester offers both decimal and hexadecimal display. Hexadecimal
numbers are shown by a preceding ‘$’ symbol. This is interchangeable with the more
common ‘0x’ prefix for hexadecimal. The following numbers are identical: 0xAA, $AA,
H’AA, AA16.’The Wife’ DMX Tester uses the ‘$’ symbol for the simple reason that it uses
the least display area.
Timing mode
Detail mode provides four further pieces of information about the DMX signal. The Period
"P" is the time between received Breaks on the DMX512 signal.
The reciprocal (that is the ‘1/x’ button on your calculator) of this number gives the refresh
rate.
The second number is the Break time "Bk". This is the length of the synchronizing code used
to restart a new DMX frame. The specification requires this value to be 88uS or greater. If
this is not the case, the timing error icon "T" will be displayed in the main receive window.
The third number "C" represents the number of dimmer channels received in the last DMX
packet. This number should be constant, although the value may be less than 512, depending
on the type of console used.
The fourth number is the Mark after Break time "MaB". This is the delay between the end of
a Break and transmission of the start code. The specification requires a MaB of 4us or
greater. If this is not the case, the timing error icon "T" will be displayed in the main receive
window. (The MaB limit was increased to 8uS in the DMX512 1990 Revision).
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