User's Manual

ARCXTEND USER MANUAL – R1.4, ISSUE 4

Hub installation & commissioning

Setup the Hub Power and RF Connection

)Install a power passing tap at the desired hub location on the cable plant and verify that the AC

power level, the downstream RF signal power level, and the downstream modulation error rate

(MER) meets ARCXtend requirements as listed below:

1. Verify that the input power range is between 50 Vac and 110 Vac nominal.

2. Verify that the input the downstream RF signal level is between -5 dBmV and +25 dBmV.

3. Verify that the downstream modulation error ratio (MER) going into the hub is within the

budgeted range for this link. In general a minimum MER of approximately 35 dB is required

for 256 QAM operation and 31 dB is required for 64 QAM operation.

Figure 4-1: Hub Installation Diagram

Secure the Hub to the Strand

)Using the antenna pattern decals located on the top and side of the hub, align the hub antenna

in the approximate direction of customer site(s). Install as show in Figure 4-1 per the steps

provided below using a 7/16” combination or socket wrench. It is recommended that the hub be

located on the strand as close as possible to the utility pole to minimize swaying in windy

conditions.

1. Attach the bracket to the messenger strand with the hanger bolts at A and B. Tighten the

hanger bolts lightly. If the existing cable bundle lashed below the messenger strand is