
April
2018
Pathfinder DVL Guide
Page 116
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
CX – Input Trigger Enable
Purpose
Enables or disables the trigger.
Format
CX n d t [p]
Use as needed.
Range
n: n = 0 to 5 per Table 26.
d: 0 to 65535 one hundredths of a second delay time.
t: 0 to 65535 one hundredths of a second time-out time. Setting “t” to 65535 disables the
time-out.
p: (optional) 0 or 1. Setting “p” to 1 enables ping-once mode after time-out.
Default
CX 0 0 65535 0
Description
The unit will ping once within 1ms after the trigger transitions as indicated in Table 26 for
CX = 1 to 3.
For CX 4 to 5, the ExplorerDVL will trigger while the trigger is in the state described in
If “p” set to 1, ping only once after time-out, then wait again for another Trigger or time-
out. If set to 0 (default) or is not set (legacy CX command), it will default to 0 and the
DVL will self-deploy normally after time-out.
Table 26.
Input Trigger
CX (n)
System Behavior
0
Trigger off
1
Pings after low to high transition
2
Pings after high to low transition
3
Pings after either low to high or high to low transition
4
Ping while trigger is low
5
Pings while trigger is high
The polarity is defined as the electrical level at the connector (J3) on the electronics enclosure
(see Table 2).
Note that commanded time between pings (TP) takes higher precedence than this command.
That is, the unit will ping on the next trigger after TP has been satisfied.
The trigger delay causes the unit to wait after a trigger is received for pinging to start. Delay
after trigger is received is valid only for first ping for CX n=4 or 5.
The time-out is effective the first time the time-out occurs. The unit pings without waiting for
the trigger after the first time-out.
De-asserting the trigger after it has been asserted and the ping started will not stop the ping
for CX n=4 or 5. That is, the trigger condition only delays the ping prior to transmit and will
not be checked until the ExplorerDVL unit is ready to transmit again.
Note that commanded time between pings (TP) takes higher precedence than this command.
That is, the unit will ping on the next trigger after TP has been satisfied (see
TP – Time
Between Pings
).
The Trigger In and Out lines must each be referenced to D_COM (see