Chapter 5 Configuring the PM135 Configuring Meter Security
96 PM135 Powermeter Series
Table 17: Local Time Options
When DST is disabled, the
RTC operates in standard
time only. When enabled,
the meter automatically
updates the time at the pre-
defined DST switch dates.
Daylight Saving Time
When the daylight saving time is enabled, the meter automatically
advances the device clock by one hour when daylight saving time begins
and puts the clock back one hour when it ends. The default daylight
saving time change points are preset for the U.S.A.
The daylight saving time option is disabled in the PM135 by default. If the
daylight saving time option is disabled, you need to manually adjust the
device clock for daylight saving time.
Time Synchronization Pulses
External time synchronization pulses can be delivered through one of the
digital inputs.
If a digital input is selected as the time synchronization source, the edge
of an external pulse adjusts the device clock at the nearest whole minute.
The time accuracy could be affected by the debounce time of the digital
input, and by the operation delay of the external relay.
5.3 Configuring Meter Security
This setup allows changing the user password and enabling or disabling
password protection.
The password in your meter is preset to 0 at the factory, and password
protection is disabled.
Using the Front Display
Select the Password Setup entry from the Device Setup menu. See
Viewing and Changing Setup Options in Chapter 3 for information on
configuring parameters via the front display.
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