Specifications
18
745-838-B0-001
NOTE:
This alignment procedure requires that the output neutral of the power supply is connected to the chassis of
the power supply. If you are performing the alignment on a bench, verify this connection is made.
3.1.4 XM2 USM2 Output Voltage Calibration
You must calibrate the scaled output voltage of the USM2 cards. To calibrate the
output voltage, use a DC voltmeter and adjust the potentiometer located next to the
white 15-pin connector of the USM2 cards.
Determine if the power supply has a 60V or 90V nominal output.
3.0 Installation Instructions for Specifi c Power Supplies, continued
3.1 Alpha XM2 Series, continued
To make a universal adjustment:
Connect a DC voltmeter, Common or Minus side to the battery, (black) test point
on the inverter module front panel (or chassis); plus side to pin 4 of the USMx
connector. For reference, Pin 1 of the transponder connecter is the black wire.
For 60V XM2 power supplies, using USM2 or USM2.5 cards, adjust the
potentiometer (visible through a small round hole next to the 15 pin white
connector) until the DC voltage present at pin 4 is 9.00VDC.
For 90V XM2 power supplies, using USM2 or USM2.5 cards, adjust the voltage
at pin 4 to 13.5VDC.
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3.1.5 Provisioning the Network for the XM2 Series
The transponder must be recognized by the CMTS as a valid device, be able to
obtain an IP address and communicate with the SNMP management server.
Load the transponder’s MAC address into the CMTS.
Compile the two MIBs onto a network manager or MIB browser software.
Setup SNMP using two AM propriety MIBs fi les
Set the AM MIBS points for the XM2 as follows:
1.
2.
3.
4.
For USM2
Oid: 1.3.6.1.4.1.2183.2.3.3.1.2 set to (2) (power supply
selection)
Oid: 1.3.6.1.4.1.2183.2.3.6.5 set to (1) (output voltage
scaling)
Oid: 1.3.6.1.4.1.2183.2.3.6.6 set to (1)for 110V powered
supply and (2) for 220V
Install and confi gure the DOCSIS confi guration fi le. See Section 2.1.8 for a
sample fi le.
5.
See Section 4.0, Proprietary Management Information Bases (MIBs) for detailed
information.