CiTRANS R820 Edge Router Hardware Description
2.5
Connection Terminals and Switches
The following introduces functions of connection terminals and switches on the
PDP250B.
2.5.1
Connection Terminal Board
After removing the front panel of the PDP250B, you can see that components (such
as connection terminals and buzzers) are distributed on the panel of the PDP250B,
as shown in Figure 2-3 and Table 2-1.
Figure 2-3
Connection Terminal Card of the PDP250B
Table 2-1
Components on the PDP250B Connection Terminal Board
Component
Terminal & Jumper
Pin
Description
1
SW1, SW2
Automatic circuit breaker of the main power supply
2
XPB1
Alarm terminal of the head of row cabinet
3
XPB2
Alarm terminal of the cabinet indicator
4
JP1
Jumper pin for selecting the PDP operating status
5
XS4 (active)
XS3 (standby)
0V: 0 V input terminal of the external power supply;
PE: terminal of the protection earth ground cable
2-4
Version: A
