Beijing Huahuan Electronics Co., Ltd.
16
H0FL-EthMux.SA1601/SA1602 User’s Manual V1.3
Note: For user’s safety, both DC and AC power supply must have good
protection ground connection!
3.1.2
E1/T1 Interface Connections
H0FL-EthMux.SA1601 provides 1 120Ω-E1/100Ω-T1 balanced interface
and uses RJ-48 socket; H0FL-EthMux SA1602 provides 2 120Ω-E1/100Ω-T1
balanced interfaces and uses dual-E1 socket. Besides, both of them support 75Ω
non-balanced interface by the Dip switches on the rear panel and external
impedance converting cable. For this function, the user should give the interface
impedance when making orders. Meanwhile, the user can buy or make
connection cables according to actual requirements.
E1/T1 interface provides Rx
Tx, Tx
Rx through NMS, and the loopback
of each channel can be set up independently. Rx
Tx, Tx
Rx loop back
definition is shown in Figure 3.1-1.
E1/T1
Tester
H0FL- EthMux
H0FL- EthMux
Ethernet or
IP
Rx
Tx
Rx
Tx
Figure 3.1-1 E1/T1 loop back
Rx
Tx can test E1/T1 connection cable, and Tx
Rx is used to test the
whole circuit including H0FL-ETHMUX.SA1601/SA1602 in the two ends and
the Ethernet link between them.
3.1.3
Ethernet Cable/Optic Fiber Connections
H0FL-EthMux.SA1601/SA1602 device provides four 100Base-Tx
Ethernet electrical interfaces (two ports are uplink port and the other two are
