Alpha Technologies AlphaNet Series External DOCSIS - Manual (Page 20)

20 745-838-B2-001 Rev. A
If commercial power is present at the site, and the power supply is currently being 1.
powered by commercial AC line voltage, turn the battery breaker OFF on the inverter
module.
3.0 Installation Instructions for Specifi c Power Supplies, continued
3.2 Alpha XM Series Power Supply
NOTE:
You may require a chipset upgrade for the USM and XM inverter drawer for proper operation with the XP-
EDH-A2. Operating an XM series power supply with the XP-EDH-A2 with the wrong version chipset fi rmware
may result in intermittent or incorrect operation of the power supply. Contact your Alpha representative for
additional information.
Slide the inverter drawer out to gain access to the USM card. Remove the USM/APM 2.
assembly from the inverter drawer. To install the USM and APM cards, refer to the
manual supplied with the cards and complete the installation process.
Refer to the following diagram and adjust the jumper settings to match your power supply. 3.
Reinstall the USM/APM assembly into the connector on the inverter drawer. Secure with 4.
the screw and bracket.
Re-insert the inverter module. 5.
NOTE:
When the battery breaker is turned OFF, standby power is disabled.
NOTE:
The EDH-A2 supports AC Scaling for Output Voltage measurements as opposed to DC scaling for the EDH-A.
As a result the USM switch settings are different and calibration is no longer necessary. Refer to the EDH-A
Installation Manual for EDH-A installation procedures.