11 Main Power Connections
1.Verify that the power supply is configured for the desired voltage input. Attach the supplied AC power cord between the bay and appropriate AC power source. If necessary, instructions for changing the input voltage selection can be found in the Maintenance Section of this manual (See Chapter 18, “Mainte- nance Information,” on page 65) Switch power ON to the bay(s).
NOTE | The system may require several seconds to fully initialize after a |
| reset. This time can vary based on the activity and general size of the system. |
2.Verify that the LEDs associated with the fuses are lit on all of the applicable power supplies.
Installations having cameras powered from an AC phase different than that of the Allegiant system may utilize the built in EXTERNAL SYNC input or verti- cal PHASE ADJUST.
NOTE All cameras should be phased properly with each other before the EXTERNAL SYNC or PHASE ADJUST feature is implemented.
The EXTERNAL SYNC input will accept composite video, composite sync, or output from a Master Sync generator. Any one of the phased cameras may be used as a master sync source to the system using the EXTERNAL SYNC input. To implement this feature, simply connect the incoming video source (using a BNC “T” connector) to both the appropriate camera BNC input and the EXTERNAL SYNC input which is found on the rear of the Allegiant CPU bay. The front panel illuminates the EXT SYNC LED. Alternatively, the PHASE ADJ on the front panel of the power supply may be adjusted until the vertical interval switching is achieved. The PHASE ADJUST has a range of about 130 degrees.
3. | Reattach the front panel(s) to the bay(s). |
Figure 10: LTC 8501 Series Rear Panel
EN 28 | Bosch Security Systems December 13, 2005 |
