Cisco Systems Gateway 10 Manuel D’Utilisation

The UCH must be used for all cable connections to the RF switch line card. Failure to use the UCH may cause 
permanent damage to the line card connectors, resulting in low or no RF output in the downstream and low or no 
RF input in the upstream.

To install the UCH, complete the following steps:

Position the UCH red line to the red line on the RF switch card (left side see Figure 17).

Align the end pins on the UCH with the pin holes in the faceplate.

While replacing the UCH, be careful not to bend the cables in the holder at right angles.

While holding the UCH and the cables in place on the faceplate, use your fingers to tighten the lead screw. If the UCH 
and cables do not set securely in place on the faceplate, wiggle the holder to set the connectors.

Use the flathead screwdriver to tighten the lead screw. Turn the lead screw clockwise until it no longer turns (10 in-lbs, 
maximum torque 15 in-lbs).

Torquing the lead screw to more than the maximum of 20 in-lbs can cause the lead screw to fail.

For the UCH2, as you turn the lead screw clockwise, the outer shroud on the UCH moves to cover the red line on the 
top and the black line on the bottom of the UCH. The half circles on the edge of the shroud close as the shroud fits 
down over the UCH. Full engagement is indicated by visible metal-to-metal contact between the UCH and the faceplate 
(check the half circle cutouts).

NOM ATTENUATION GRAPH

0

-12

-10

-8

-6

-4

-2

0

100

200

300

400

500

600

700

800

900

1000

A

TTEN (dB/100-FT)

FREQ (MHz)

NOM ATTEN (dB/10-0-ft)

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