Model: MTS200 (1U)
Doc. Ref. no. : - m08/om/201
Issue no.: 03
Page 37 of 195
User’s Manual
8.2 Battery Backup RTC and GPS receiver RAM Configurations:
Backup batteries are used to keep the RAM and the Real-Time Clock (RTC) in the receiver running even
after unit Power OFF to retain setup and status information, Time, Date, Last Calculated Receiver
Position, Almanac and Ephemeris information along with receiver specific parameters allowing
resumption of GPS operation automatically once unit mains power is restored.
In this “Warm Start”
scenario when the unit power is restored, the receiver scans the RTC to check how much duration has
elapsed since power was removed, calculates which satellites should be visible using the previous stored
almanac information and then proceeds to develop fix information providing data.
The battery is a maintenance
‐
free rechargeable Manganese lithium type. A built
‐
in battery charging circuit
is used when the unit is powered on, eliminating the need for maintenance.
Battery Specification:
Manganese lithium, 3.6 volts, 17 mAh,
Memory Retention Time: 15 days (approx.)
FUNCTIONALITY
It is recommended that if
mas
TER
T-Sync
Model MTS200 unit was in Power
off condition for the duration more than specified Memory retention time, user
should allow to keep unit in Power ON condition for 72hours to charge the
RTC backup battery to full level.
Non Volatile Memory Configuration:
The GPS clock maintains its all configuration parameters internally in non
‐
volatile memory, even when the
power is off.
8.3 Startup Operation
Before powering up
mas
TER
T-Sync
Model MTS200 device, user has to ensure that power supply
connections are done properly. When power is applied, below is basic start up sequence of
mas
TER
T-
Sync
Model MTS200 Device.
While GPS is in Power off, all the outputs are disabled.
As soon as Power is applied,
GPS Display and GPS POWER LED in “Red” color on front panel
illuminates and as the GPS is in unlock condition at startup, GPS LOCKED LED illuminates in RED
color.
There is sequence of messages on LCD which are display one after another as mentioned below.
