Comtech-ef-data SDM-2020 Manual do Utilizador descarregar pdf (Página 30)

SDM-2020 Satellite Demodulator Revision 4

Introduction MN/SDM2020D.IOM

1–4

1.2 Assemblies

The demodulator consists of the assemblies listed in Table 1-1

Table 1-1. Comtech EF Data Module Part Numbers

Part Number Description Comment

PL/5746 Video Demod Baseband Board

PL/5782

IF Module, 75Ω

PL/6169 Front Panel Assembly

PL/6170 SDM-2020 Top Assembly

PL/7732-1

L-Band 4-Input IF Module, 75Ω

June 1999 and later

PL/7733-1 Video Demod Baseband Board

KT/8220-1

Chassis: 90 – 264 VAC, L-Band IF, 75Ω

KT/8220-2

Chassis: -48 VDC, L-Band IF, 75Ω

KT/8220-5

Chassis: 90 – 264 VAC, 70/140 MHz IF, 75/50Ω

KT/8220-6

Chassis: 90 – 264 VAC, 70/140 MHz IF, 75/50Ω

PL/8292 70/140 MHz IF (Option) (see Note) May 2000

Notes:

1. Operates with P/L7733 Mainboard only.

2. For individual Data Interfaces, refer to Table 1-2.

1.3 FAST Options

The SDM-2020 Satellite Demodulator is extremely flexible and powerful, and

incorporates a large number of optional features. Some customers may not require all of

these features, and therefore, in order to permit a lower initial cost, the modem may be

purchased with only the desired features enabled. If, at a later date, a customer wishes to

upgrade the functionality of a modem, Comtech EF Data provides a system known as

Fully Accessible System Topology (FAST) which permits the purchase and installation

of options through the use of special authorization codes, entered through the front panel,

or remotely. Options include:

• Original Equipment Manufacturer (OEM) LCD

• 8-PSK – DVB

• 16-QAM – DVB

• 2 L-Band Inputs

• 4 L-Band Inputs

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