JRC JAX-9B -, Руководство по установке

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4. Setting
JAX-9B W-FAX Installation Manual
35
7ZPNA4096
4.3. Connection of GPS Receiver
4.3.1. Automatic Time Correction by the GPS Receiver
JAX-9B can correct the internal clock automatically by receiving the time data outputted from a GPS
receiver. Connecting a GPS receiver to JAX-9B is recommended if the timer program recording is used.
Doing so will make it unnecessary to correct the time of the internal clock periodically. Even if the
backup battery in JAX-9B runs out, JAX-9B can continue normal operation by receiving the time data
outputted from the GPS receiver.
MEMO
•
The lithium battery in JAX-9B is used to back up the internal clock.
The internal clock can continue to indicate the right current time by receiving data from
the GPS receiver, even if the battery cannot back up the internal clock.
4.3.2. Setting
The automatic time correction is performed only by connecting the GPS receiver to JAX-9B.
It is unnecessary to set up JAX-9B.
4.3.3. GPS Receiver Connection Interface
JAX-9B supports a connection interface as follows:
For connecting a GPS receiver, consult with the manufacturer of the GPS receiver about the data output
interface of the GPS receiver.
No. Item Specification
1 Communications I/F NMEA standards
2 Baud rate 4800bps
3 Data format NMEA standards Ver. 2.0 or following
4 Received data ZDA or RMC
The above sentence contains time data.
5 JAX-9B interface port
TB102 Rx-: 7pin Rx ＋ :8pin
6 GPS Receiver interface port Check the data output port of the GPS receiver.
4.3.4. Correcting Internal Clock (Important)
Because of the necessity for registering the time difference with the standard time (UTC) that the GPS
receiver outputs, it is necessary to set the time of the internal clock manually only once after connecting to
the GPS receiver.
* Standard time means a local time for using JAX-9B.
Refer to the 4.1.1 clause for operating procedure.