
© 2020 Kymeta Corporation. All rights reserved. 17 10 April 2020
700-00064 revA Kymeta™ u7 terminal user manual — TRM-U7H and TRM-U7X configurations
9.4 Replace the data interface box
What’s in the kit
The data interface box accessory kit consists of the following components:
(1) Data interface box and antenna control cable assembly
(1) Loctite 242
(3) Button head cap screw (BHCS), M4 x 10 for mounting the item to support plate
(1) 2.5 mm ball end Allen wrench
Before you begin
Before replacing any components, familiarize yourself with 700-00065-000 Kymeta™ u7 terminal installation guide
TRM U7H U7X configurations, section Safety and handling instructions.
⚠Prior to replacing any parts, power down the u7 terminal and disconnect all power sources to avoid possible
injury from electric shock.
Assembly instructions
1. Dismount the ODU and lay it face down on a clean, flat cushioned surface to protect the radome coating.
2. Disconnect the Ethernet cable from the data interface box.
3. If the mounting handle has been attached, remove it. Use a 1/4” ball-end hex key wrench (not provided with the
kit).
4. Disconnect the 18-pin connector of the BUC control cable from the data interface box.
5. Disconnect the power out cable from the back side of the data interface box.
6. Remove the data interface box from the support plate. Discard the screws.
7. Disconnect the 31-pin connector of the antenna control cable from the back of the antenna. Discard the
data interface box and antenna control cable assembly per local regulations.
8. Holding the new data interface box and antenna control cable assembly, attach the 31-pin connector to
the back of the antenna.
a. Inspect the female and male pins of the 31-pin plug and jack connectors.
b. Align the inner and outer key.
c. Align the keyway of the connector with the key of the 31-pin receptacle. Gently press the connector into
place with firm even pressure. The connector should sink into place when the pins and keyways are aligned.
Do not force the connector down or apply pressure at an angle or with the keyway not aligned.
d. Once the connector has seated, push down and twist the outer lock ring clockwise to secure the connector
in place, until the lock ring is engaged. Do not over twist the lock ring; it is not a screw down fastener. When
connected correctly, the 31-pin connecter will not disconnect if you pull gently on the plug.