Combined System Load Factor
Upgrading DS2000 to DSX-80/160
Upgrading
◆
5
Upgrading
Combined System Load Factor
Understanding System Load Factor
The combination of lines and extensions you can connect to your DSX system may be limited by the System
Load Factor. Use the
Combined System Load Factor Worksheet
chart on the next page to verify your sys-
tem’s con
fi
guration. When entering data on the chart, for each installed card make entries for each
Load
Type
. There are two
Load Types
to consider: 5 VDC and 40 VDC.
To check your system con
fi
guration:
1. Indicate the quantity for each card installed in the
Qty
column.
- The number of keysets, single line sets, and DSS Consoles does not affect the load factor.
2. For each item and for each Load Type, multiply the
Qty
times the
Load
and enter the value in the
Total
column.
- For example, two 16ESIU Cards have a load of 16 for 5 VDC and 40 for 40 VDC.
3. Add up the entries in each
Total
column and enter the values in
Item 1: Load Type Totals
.
4. Review
Item 2: Power Supply Capacity
and determine the capacity of the power supplies installed in
your system.
5. Compare the capacities in
Item
2
to your entries in
Item
1
.
Item
1
must always be equal to or less than
the entry in
Item
2
.
Important
Do not operate your system if the total for either Load Type
exceeds the Power Supply Capacity of your installation.