User's Manual

1678 RFD OPERATION MANUAL 47
CAUTION Do not assume the DISARM command has been received by the
Remote Unit unless disarmed status is confirmed with a steady SAFE light for that
Remote Unit on the Controller display panel. If distance appears to be the problem,
move closer to the Remote Unit following standard procedures for this type of situation.
The “STATUS” and/or “DISARM” switches may be pressed repeatedly as the Remote
Unit is approached. Maintain a safe distance from the Remote Unit. Do not approach
the Remote Unit until disarmed status is confirmed with a steady SAFE light for that
Remote Unit on the Controller display panel. Under no conditions should the “FIRE”
switch be pressed as the Remote Unit is approached. DO NOT bring the Controller
closer than 100 feet (30 meters) to blasting caps, wires connected to blasting caps, or
other explosives.
5.4.9. Turn off the Controller.
5.4.10. Recover the fielded Remote Units.
5.4.11. Refer to Post Operational Procedures in chapter 5.5.14.
5.5. SYSTEM OPERATION – REMOTE UNITS BOTH WITHIN AND IN EXCESS OF
1 MILE FROM CONTROLLER
Note: If the distance between the Controller and the Remote Units is in excess of 1
mile, the Remote Units status transmissions may not be received by the Controller. The
Controller will command the Remotes from a distance greater than 1 mile, but the
Remote status may not be confirmed. The Controller performs just as it would when it
is within 1 mile of the Remote Units. The only difference is the method the status
indications are displayed on the Controller display panel. The ARMED and SAFE status
lights for out of range Remote Units will flash on the Controller display panel to indicate
the Controller did not receive a status message from the Remote Unit. Once the
Remote Units are set up for the shot, the operator must assume the Remote Units have
received the command.
5.5.1. The RFD will operate in a two-way mode (confirmed communications –
range less than 1 mile) and one-way mode (unconfirmed communications – range
greater than 1 mile).
5.5.2. If the Remotes are within 1 mile of the Controller, the status of the Remote
Units (ON/LOW BATT, ARMED, and SAFE) will be displayed with steady lights on the
display panel of the Controller.
5.5.3. If one or more Remote Units are out of range of the Controller, the status of
these Remote Units will be assumed and their status lights will flash on the Controller
display panel to indicate unconfirmed status. Accordingly the operator must assume
the following:
• Commands have been received by the Remote Units.