D.15 Mode U waveform
Hardware-Triggered Delayed Pulse Strobe with Edge Disarm
Mode U is identical to Mode I except that the counter will be disarmed
while the Gate an inactive-going Gate edge is applied to the counter.
And the counter will hold the count value until it is issued a LOAD
command or REST command.
SOURCE
COUNT
VALUE
TC OUTPUT
TC TOGGLED
OUTPUT
GATE
L-1
L-2
2
0
Mode U Waveforms
X
L
1
H
WR
ARM
COMMAND
H-1
H-2
2
0
1
L
SOURCE
COUNT
VALUE
TC OUTPUT
TC TOGGLED
OUTPUT
GATE
L-1
L-2
2
0
X
L
1
H
WR
ARM
COMMAND
H-1
H-2
N+2
N
N+1
SOURCE
COUNT
VALUE
TC OUTPUT
TC TOGGLED
OUTPUT
GATE
L-1
L-2
N+2
N
X
L
N+1
WR
ARM
COMMAND
65
