Comtech EF Data DST - Manual (Page 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.