User's Manual

-50

-40

-30

-20

-10

435

440

445

450

455

460

465

470

475

480

485

Ref Level :

40.0 dBmV

dB / Div :

10.0 dB

Spectrum Analyzer

GOOD

Model: MS2711B Serial #: 00215050

Date: 05/23/2002 Time: 11:55:01

RBW: 1 MHz VBW: 30 kHz Detection: Average

CF: 459.0 MHz SPAN: 50.0 MHz Attenuation: 0 dB

dBmV

Frequency (434.0 - 484.0 MHz)

Figure 2-7: Proper Downstream IF input to subscriber’s modem.

The spectrum analyzer settings for Figure 2-7 are shown in Table 2-1:

Table 2-1: Typical spectrum analyzer settings.

Parameter Setting

Center Frequency 459 MHz

Span 50 MHz

RBW 1 MHz

VBW 30 kHz

Vertical Scale linear, 10 dB / division

Reference Level +40 dBmV

Attenuation 20 dB

Detection Mode Averaging

Align the subscriber Transceiver antenna as described above, adjusting for

maximum signal amplitude.

2.2 Cable Connection and Grounding

Attach the single RG-6 coaxial cable to the F connector on the rear of the Subscriber

Transceiver. See Figure 2-8. Waterproof the connection using a suitable method

such as taping with Scotch #88. Be sure to leave sufficient slack to allow the

ARCXtend manual, August 2003 2-6