Buc-Hpa - Waveguide/Coax Rf Losses - Honeywell JetWave MCS-8562 Installation And Maintenance Manual

SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
(3) To install the thermal pad, refer to document Thermal Pad K, BUC-HPA Conduction
SCD-90402388. It can be found at Jetwave Customer Support.
NOTE:
CAUTION:
(a)
C.

BUC-HPA - Waveguide/coax RF Losses

A waveguide is used for the BUC-HPA to OAE RF TX connection. The waveguide run should
include a short length of seamless flexible waveguide along the routing to accommodate tolerances.
The waveguide must have mounting points to interface to the attachment points provided.
NOTE:
EFFECTIVITY
ALL
© Honeywell International Inc. Do not copy without express permission of Honeywell.
JetWave™ MCS-8562 Terminal
The configuration of the mounting feet and connectors shown in Figure 3-2 is
representative only and may not be the exact configuration for all BUC-HPAs.
Figure 3-2. BUC-HPA Thermal Pads
THE THERMAL PAD OPAQUE PROTECTIVE BACKING MUST BE REMOVED
FROM BOTH THERMAL PADS BEFORE USE IN THE FINAL APPLICATION.
FAILURE TO DO SO CAN RESULT IN PREMATURE SHUTDOWN OF THE BUC-
HPA DUE TO OVERHEATING.
Immediately before installing the BUC-HPA into the aircraft, remove white opaque
protective backing on both pads to expose the non-tacky side of the thermal pad.
NOTE: If the BUC-HPA unit is to be shipped or stored before installation, do
NOT remove the white opaque backing on the thermal pads.
NOTE: Honeywell does not recommend applying the thermal pad to the
BUC-HPA if the BUC-HPA is to be shipped or stored. BUC-HPA
thermal pad installation should be done shortly before actual BUC-HPA
installation.
Make sure the waveguide is connected before powering the BUC-HPA. Always connect
J1 last and disconnect J1 first (J1 carries the A/C power).
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11 Nov 2020