and then remove the wiring section of terminal block.
Please pay attention to the above operation sequence.
【
E1 Port Connection
】
The device provides 1 E1 port, interface type is BNC or RJ45,
interface impedance is 75 Ω unbalanced (BNC) and 120 Ω
balance (RJ45), supports interface 1500V electromagnetic
isolation protection. 120 Ω RJ45 pins are defined as follows:
Pin No.
Function definition
Signal
direction
1.
NC (reserved)
-
2.
RX+ (positive received data) Input
3.
RX- (received data negative) Input
4.
GND (Ground)
-
5.
GND (Ground)
-
6.
TX+ (sending data positive ) Output
7.
TX- (sending data negative)
Output
8.
NC (reserved)
-
【
RS-485/422 Connection
】
The device provides 1 RS-485/422
interface in the form of DB25 female
head, which can be connected to the
RS-485/422 device through the
converter wire of DB25 male head to DB9 female head. The
interface supports 600W surge protection and 15KV static
protection. The pin definitions of RS-485/422 are shown as
follows:
RS-485:
Pin No.
Function definition
Signal direction
1.
GND
-
3.
485-
Input / output
16.
485+
Input / output
RS-422:
Pin No.
Function definition
Signal direction
1.
GND
-
2.
RD-
Output
3.
TD-
Input
14.
RD+
Output
16.
TD+
Input
【
DIP Switch
】
The device provides 1 set of DIP switch for
impedance, BNC grounding, clock, loopback
and factory setting. The functions are
defined as follows.
The settings of SW1 are as follows:
Category
setting
DIP bit Set the DIP to
OFF
Set the DIP to
ON
Impedance Bit 1
120 ohm
75 ohm
BNC
Grounding
Bit 2
No Grounding
OUT port
grounding
Bit 3
No Grounding
IN Grounding
Clock
Bit 4
Internal Clock
Line recovery
clock
Loopback
Bit 8
No loopback
E1 Loopback
Bit 9
No loopback
No loopback
Bit 10
Reserved
Reserved
Restore Factory Settings
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
ON
OFF
OFF
ON
OFF
Bit 6
Bit 7
Bit 8
Bit 9
Bit 10
OFF
OFF
OFF
OFF
OFF
【
Indicator
】
The device provides LED indicators to monitor the device
working status with a comprehensive simplified
troubleshooting; the function of each LED is described in the
table as below:
LED
Indicate
Description
PWR
ON
The power supply is running
normally
OFF
Power supply is disconnected or
running abnormally
LED
Indicate
Description
LOS
ON
E1 interface receives no code
AIS
ON
E1 interface receives full 1 code
ERR
ON
E1 link interrupt
TD
ON
Data received successfully
RD
ON
Data sent successfully
Notice:
Whether AIS alarm is caused by a line fault, depends on
the actual situation. For example, when E1 port uses
non-similar HDLC protocol, when data communication
is not conducted, the whole 1-code signal must appear
on the line, and the AIS indicator will alarm. Just as
when the device was just powered on, the line not
connected to the E1 port was full 0 codes, and the AIS
light was not on. If the E1 port was carried on the outer
loop, then the E1 port was full 1 code, and the E1 light
would be naturally on.
【
Specification
】
Panel
RS-485/422
1 RS-485/422, DB25 female
head
E1 Interface
1 E1, BNC or RJ45, 75 Ω
unbalanced (BNC) and 120 Ω
balance (RJ45)
Indicator
Power indicator, losing
synchronization alarm indicator,
upstream E1 link full 1-code
alarm indicator, E1 link interrupt
alarm indicator, data receiving
indicator from G.703 network,
data sending indicator to G.703
network
Power Supply
Power input
220VAC
Terminal block
Power supply outlet with switch;
Power Consumption
