Laversab ARTS 7000, User Manual, Page: 54 / 194

ARTS 7000 User Manual Aviation Systems
Rev A6 Page 54
S
UBSECTION
2: A
NTENNA
C
OUPLER
S
ETUP AND
O
PERATION
The Coupler can be used as a shield or a coupler for MODE S, ADSB, ATCRBS and DME tests
when the antenna under test is a shark fin design.
For diverse transponder applications it is advised to utilize 2 couplers – one as a shield the
other as a coupler.
Coupler Set-Up
1. Select a suitable cable for connection from the ARTS to the coupler.
2. Connect a 10dB attenuator to the Cable Port of the ARTS 7000 test set.
3. Connect the cable between the Coupler and the 10dB attenuator.
4. Place the coupler over the aircraft antenna and adjust the clamp for a firm fit.
a. Always center the coupler to the aircraft antenna. Ensure the coupler is aligned
centrally in both the planes.
b. When tightening the clamping screw, do so gently. Over tightening can cause
damage to the antenna or the coupler.
c. Gently pressing the coupler onto the aircraft skin while tightening the clamp
ensures a good seal against the skin of the aircraft.
5. In the ARTS application, select the Config > Port Selection (Antenna/Cable) . Choose
Cable w/ Coupler . If an attenuator is used, please enter the value in External Attenuator
(dB) , and ensure the correct cable length is entered into Direct Cable Length .
WARNING
The Coupler is a heavy item that is often used in high position applications.
Ensure the coupler is clamped firmly to the antenna under test and cannot
detach from the aircraft. Personnel or equipment could be damaged by a falling
coupler.
Whenever possible use additional cable clamps to support the cable and
minimize the stain on the coupler.