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Rack-mount the Cisco uBR914 DSU as follows:
1. Choose whether to use a 19-inch rack, a 23-inch rack, or a 24-inch rack.
2. Determine whether the front panel or rear panel of the Cisco uBR914 DSU will face forward.
3. Attach the brackets as illustrated.
4. Secure the Cisco uBR914 DSU in the rack.
For complete installation instructions, and for warnings and cautions that are essential to proper installation and operation, see the Cisco uBR910 Series Cable DSU Hardware Installation Guide, available on CCO and the Documentation CD-ROM.
1. Locate the cable TV (CATV) wall outlet.
2. Connect one end of the CATV cable into the CATV wall outlet.
3. Connect the other end of the CATV cable to the connector with the label Cable TV In, on the rear panel of the Cisco uBR910 cable DSU.
1. Connect the end of the serial cable labeled "DCE" to the serial connector on the rear panel of the Cisco uBR910 cable DSU.
2. Connect the other end of this serial cable, which is labeled "DTE," to the appropriate serial connector on the access router.
1. Turn ON the power to the access router.
2. Plug the plug end of the provided power cord into the power connector on the rear panel of the Cisco uBR914 cable DSU.
3. Plug the three-prong end of the power cord into a grounded AC power outlet.
4. Turn ON the power switch, which is next to the power connector on the rear panel of the Cisco uBR914 chassis.
After the Cisco uBR910 series DSU is connected and powered on, it begins a series of self-diagnostic tests. If all tests complete successfully, it then executes an automatic installation procedure.
At the start of initialization, the LEDs on the Cisco uBR910 cable DSU light briefly, then turn off. The following events occur during initialization:
1. Various LEDs light during the self-test to display progress and error codes.
2. The Activity LED blinks as the system begins its self-test.
3. The Cisco uBR910 DSU initializes, establishes communication with the access router and service provider network, and is ready for use.
After initialization, the Activity LED lights solid to indicate that the system is operational. The LINK, DS, US, and DSNR LEDs also indicate the Cisco uBR910 is operational.
The Cisco uBR910 series DSU has LEDs on both the front and back panels.
| Front Panel LEDs | ||
|---|---|---|
| LED | Description | Function |
Power | System and Power Status | On = Power on and OK Off = No power |
RPS | Redundant Power Supply | On = RPS connected and active Off = RPS not present---using the AC-input power supply |
Activity | System OK | On = Normal operation Blink = Performing diagnostics Off = No power or diagnostics failure |
| Front Panel LEDs | ||
| LED | Description | Function |
CBL LINK | Cable RF Interface Link | On = Cable I/F and RF link up Off = Cable I/F and RF link down |
CAB ACT | Cable Link Activity | Blinks = Activity on cable I/F Off = No activity on the cable I/F |
DS | Downstream Signal Lock Status | On = Locked to a D/S channel Off = Not yet locked on a digital signal on the D/S cable I/F |
US | Upstream | On = Upstream power is within 6 dB of the desired power level Off = Has not yet completed initial provisioning and US ranging |
DSNR | Downstream Signal-to-Noise Ratio | On = Receiving good D/S signal Off = Receiving low or marginal quality D/S signal |
Posted: Wed Jun 7 17:07:05 PDT 2000
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