Rear Panel Interfaces
DM240-DVB High-Speed Digital Modulator
5-10
TM083 - Rev. 3.0
All balanced rates use Pins 1 (-) and 9 (+) of DB-15 connector J14.
Table 5-8. Available G.703 Interfaces
G.703 Rate
Data Rate
(Mbps)
Wire Type
Connector
Impedance
(Ohms)
Coding
E1
2.048
Coax
J11 Female BNC
75
HDB3
E1
2.048 Pair J14
DB-15 120 HDB3
T1 1.544 Pair J14
DB-15 100
AMI/B8ZS
E2
8.448
Coax
J10 Female BNC
75
HDB3
T2
6.312
Coax
J9 Female BNC
75
B8ZS
T2 6.312 Pair J14
DB-15 110 B6ZS
E3
34.368
Coax
J8 Female BNC
75
HDB3
T3
44.736
Coax
J8 Female BNC
75
B3ZS
STS-1
51.84
Coax
J8 Female BNC
75
B3ZS
5.14 HSSI Interface
The HSSI (High-Speed Serial Interface) complies with the HSSI Functional and Electrical
Specifications. The physical interface is a 50 Pin SCSI-2 Type Connector. Electrical levels are
ECL. The pinouts for this interface are listed in Table 5-9.
Table 5-9. J9 – HSSI (High-Speed Serial Interface) 50-Pin Connector
Pin No. (+)
Pin No. (–)
Signal Name
Description
Direction
1 26
SG Signal Ground ---
2 27
RT Receive
Timing
Output
3 28
CA DCE
Available
Output
4 29
RD Receive
Data Output
5
30
LC
Loopback Circuit C
Output
6
31
ST
Send Timing (SCT)
Output
7 32
SG Signal Ground ---
8 33
TA DTE
Available Input
9 34
TT
Terminal
Timing
(SCTE)
Input
Содержание DM240-DVB
Страница 3: ......
Страница 13: ...Introduction DM240 DVB High Speed Digital Modulator 1 2 TM083 Rev 3 0...
Страница 17: ...Installation DM240 DVB High Speed Digital Modulator 2 4 TM083 Rev 3 0...
Страница 23: ...User Interfaces DM240 DVB High Speed Digital Modulator 4 4 TM083 Rev 3 0 Figure 4 2 DM240 Main Programming Menu...
Страница 49: ...User Interfaces DM240 DVB High Speed Digital Modulator 4 30 TM083 Rev 3 0 Figure 4 12 RF Switch Control Menu...
Страница 63: ...Maintenance and Troubleshooting DM240 DVB High Speed Digital Modulator 6 2 TM083 Rev 3 0...
Страница 67: ...Technical Specifications DM240 DVB High Speed Digital Modulator 7 4 TM083 Rev 3 0...
Страница 106: ...Appendix B DM240 DVB High Speed Digital Modulator B 16 TM083 Rev 3 0...