User Manual

ADCP-75-192 • Issue 1 • December 2005 • Section 2: Description
Page 2-24
 2005, ADC Telecommunications, Inc.
Table 2-15. HRM Rear Panel User Interface
REF
No.
USER INTERFACE
DESIGNATION
DEVICE FUNCTIONAL DESCRIPTION
1 Clock Out (A1-8, B1-
8)
RJ-45 Sample clock, Reference clock, and 1PPS
output connectors (x16)
2 Power LED Single-colored LED
(Green)
Status indicator turns green when module
has power.
3 Fault LED Single-colored LED
(Red)
Status indicator turns red when module has
failed.
4 I2C Connectors RJ-45 connectors I2C interface (x3)
5 9.6 MHz connectors RJ-45 connectors Used for HRM daisy-chaining between
racks.
6 PLL Lock LED Single-colored LED
(Yellow)
Status indicator turns yellow when phase
lock loop circuit is locked
7 1 Hz LED Single-colored LED
(Yellow)
Status indicator toggles at a rate of 1 PPS
when 1 Hz signal detected
8 12 VDC Input 3-pin molex Input power to HRM
6.6 Ethernet Hub
The Ethernet Hub (or Ethernet Switch sold as optional item) is used to consolidate Ethernet
connections within a Hub rack. The module is a commercially available unit rated for industrial
use and is available as an accessory item to the Digivance CXD system. The standard Ethernet
Hub requires 120 VAC power. For projects requiring all DC connections a -48 VDC Ethernet
Switch is available as an option. Figure 2-22 shows the layout of a 24 port 120 VAC Ethernet
Hub. The references for the Ethernet Hub front panel are shown in Table 2-16.
(2) PORT LED
STATUS INDICATORS
(1) 24 ETHERNET
PORTS
Figure 2-22. Ethernet Hub Interconnect
Table 2-16. Ethernet Hub Front Panel User Interface
REF
No.
USER INTERFACE
DESIGNATION
DEVICE FUNCTIONAL DESCRIPTION
1 Ethernet Connectors RJ-45 Ethernet ports
2 Activity LEDs Single-colored LED
Array
Status indicators show Ethernet traffic on
hub ports.