Nortel DMS-100 Series Maintenance Manual page 57

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Table of Contents

Table 6 Battery rotation and testing parameters entered in table OFCSTD

OPM_VOLT_TST

OPM_VOLT_TST

Table OPMINV

The user can set field ENABATST in table OPMINV to Y(yes) or N (no) for

each OPM. When set to Y, the system performs weekly battery testing. When

set to N, the system bypasses weekly battery testing.

Battery rotation and test cycle

The complete battery rotation and test cycle last 4 weeks and repeats. The

following table shows the rotation and test cycle. The present audit week

appears under the header Week at the PES MAP level.

legend for the following table is:

0 through 50

Note: Battery strings 3 and 7 contain datafill with an N when the system

equips Eagle-Picher A0386201 batteries. The system equips a maximum of

six battery strings for each OPM with the Eagle-Picher batteries.

O/C open circuit

DISCHG discharge through NT8X02 card

CHG charge bus

DMS-100 Family OPM Maintenance Manual ISN07 (TDM)/SN07 (DMS) and up

OPM maintenance summary 1-41

Indicates this parameter is the comparison

value for the voltage of the battery string during

the post-charge test. The default value for

Yuasa NP24-12 and Eagle-Picher A0386201

batteries is -509 and corresponds to -50.9V. If

this parameter is set to zero, the post charge

test is not performed.

Indicates that the comparison voltages for the

open circuit, discharge and post-charge tests

are specified for the MTU. The MTU has 0.5%

accuracy and 0.1V resolution. This parameter

adjusts the comarison values when an LTU is

used to test batteries instead of an MTU. The

LTU has 2% accuracy and 1V resolution.

Troubleshooting