12.5 Antenna System
119
•
Connector: 9-pin D-type subminiature:
•
RS-422/485: Transmit only on COM1, the main RS-232 port.
•
Communication Parameters: Selectable 1,200 baud to 115,200 baud; 7 or 8 data bits; 1 or 2 stop bits;
odd/even/no parity.
•
Supports all keyboard functions.
12.4.1
Broadcast Data Formats
For detailed information on all broadcast formats, please see Section 11.2.2.
12.4.2
Synchronization
For a received data message, the leading edge of the start bit may be selected to trigger the Event input,
providing synchronization with 100 ns resolution.
12.5
Antenna System
The included antenna is directly mounted on a 26 mm pole (1.05 in OD or 0.75 in ID pipe), with either a
standard 1 in – 14 (approximately M25.4
×
1.81) marine-mount thread or a 0.75 in NPT pipe thread. Other
mounting configurations are available (contact Arbiter Systems).
•
GNSS Antenna Assembly: 0.75 in pipe thread mount, 35 dB gain; 3.3 Vdc to 5 Vdc.
•
Optional antenna mounting bracket available to mount on 60 mm (2 in, nominal) pipe (P/N
AS0044600, see section 4.1.2).
12.5.1
Antenna Cable
•
15 m (50 ft) cable included with antenna.
•
Other cable styles and lengths available, see Table 4.2 under Available Antenna Cables and Accessories
for Longer Runs.
12.6
Operator Interface
12.6.1
Setup Methods
•
Clock setup: Via RS-232C Interface, use supplied utility software
•
8 Front-panel keys
•
NTP/PTP Server, use Ethernet port web interface
12.6.2
Setup Functions
•
Serial COM1
configures port parameters; returns setup and broadcast ASCII string; transmits RS-
422/485.
•
Serial COM2
: configure port parameters, return setup and broadcast ASCII string.
•
Local Time & DST
: set local time zone offset from UTC, and daylight saving time offsets.
•
Out of Lock
: Sets the time before an out-of-lock condition alarms. Can be turned off. Counts up to
45 days and clears when clock regains GNSS synchronization. See Section 8.4.
•
Relay Config.
: The internal relay may be set to make/break for the following conditions: (1) out of
lock, (2) fault, (3) alarm, (4) clock stabilized, and (5) failsafe.
•
Back Light
: Sets the back light in the LCD display to be ON, OFF, or in Auto mode.
Summary of Contents for 1201B
Page 4: ...iv ...
Page 153: ...B 7 Four Fiber Optic Outputs 135 Figure B 4 Jumper Locations ...