Edgetech 4380 MULTIBEACON, User Hardware Manual

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3-7
The pins in
Figure 3-1 are as follows:
1. External power in, 24 – 55 v @ 1 amp
2. Ground
3. Auxiliary power out
4. Auxiliary signal in, 0 – 5 v, with respect to Gnd. (pins 2 or 9)
5. Responder trigger in
6. Responder trigger return
7. RS232 data out of the beacon
8. RS232 data into the beacon
9. Ground
3.1.4.1 Leak Detection and Condensation Prevention
The model 4380 beacons have a 5/16-inch diameter purging port on the lower end cap. Purging and
nitrogen back filling is recommended. The procedure for preparation of the instruments atmosphere is as
follows. The process assumes that the operator has a vacuum pump, dry nitrogen cylinder, and
vacuum/pressure gauge all arranged on a manifold.
1. After verifying that all other (other than the purge port) O-ring seals have been cleaned, lubricated
and assembled. Prepare the purge port plug for installation. The plug must be ready for immediate
insertion.
NOTE:
When lubricating the the O-ring, use the lubricant provided with
the unit. Do not allow any to get on the transducer .
2. Insert a purge port vacuum adaptor and draw a -3 PSIG vacuum. Do not exceed -3 PSI.
1 2
3 4 5
9 8
7
6