Comtech-ef-data DST Uživatelský manuál stáhnout pdf (Strana 29)

Digital Satellite Terminal System Revision 2

Installation MN/DST.IOM

2–5

2.3.2 IFL Cable Installation

CAUTION

Comtech EF Data recommends the use of a high-performance cable

assembly for the DST . Manufacturer recommends the cable not exceed 300

feet in length. A non-high-performance cable assembly may result in

damage to the IDU, BUC, or LNB.

Refer to Tables 2-5 and 2-6 and for IFL Cables that are available from the factory.

CAUTION

Prior to connecting the cables, ensure that the ODU and LNB voltages have

been switched off.

Table 2-3. TX Cable Specification (Type N Male Connectors)

Length Part No.

feet meters

Frequency,

GHz

VSWR Insertion Loss, max

CA/6357-50

50 ± 2 15.2 ± 0.7

2 1.25:1 1.0 dB/10 feet

CA/6357-100

100 ± 3 30 ± 1

2 1.25:1 1.0 dB/10 feet

CA/6357-150

150 ± 3 46 ± 1

2 1.25:1 1.0 dB/10 feet

CA/6357-175

175 ± 3 53± 1

2 1.25:1 1.0 dB/10 feet

CA/6357-200

200 ± 3 61 ± 1

2 1.25:1 1.0 dB/10 feet

Table 2-4. RX Cable Specification (Type F Male Connectors)

Length Part No.

feet meters

Frequency,

GHz

VSWR Insertion Loss, max

CA/9645-50

50 ± 2 15.2 ± 0.7

2 1.25:1 1.0 dB/10 feet

CA/9645-100

100 ± 3 30 ± 1

2 1.25:1 1.0 dB/10 feet

CA/9645-150

150 ± 3 46 ± 1

2 1.25:1 1.0 dB/10 feet

CA/9645-175

175 ± 3 53± 1

2 1.25:1 1.0 dB/10 feet

CA/9645-200

200 ± 3 61 ± 1

2 1.25:1 1.0 dB/10 feet

Notes:

1. The TX cable above has Type N connectors and was used for both TX and RX with the

SDM-300L2 and early revisions of the CiM-300L in conjunction with LNBs that have

Type N Connectors.

2. The SDM-300L3 and later revisions of the CiM-300L modems use a Type N connector

for TX and a Type F connector for RX and use the cables listed above.

3. Equivalent cables/supplies may be used.

4. The DST is manufactured to accommodate a TX attenuation of 20 dB maximum between

the IDU and ODU, and a RX attenuation of 25 dB maximum between the IDU and RX

LNB.

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