Wapiti WG4 Installation guide
Wa p i ti M i c ro Sy s te m s
W G 4 G P S
4565 Glenbrook Rd Willoughby OH 44 94 Phone: 44 9751167 Fax: 44 95182 3 Http://wapitimicrosystems.com
GPS Time Reference
Wapiti introduces GPS Time Reference WG4 with LCD Menu-Driven for use with traffic sig-
nal controllers or some time sensitivity equipments. The WG4 will seek the signal from at
least 3 of 24 global GPS satellites and provide exact time.
The unit comes in a small compact housing with LCD Screen and LEDs that come on to
let you know that you have power, GPS Status, Time Sync and data transmitting.
The WG4 Supports multi-protocols such as GPS UTC, GPS Local Time, WWV, Wapiti W4/7/9
and Wapiti T2. For Wapiti Users, just plug-and-play without any settings.
FEATURES
DESCRI TION
•
12-channel GPS receiver tracks and uses up to 12 satellites for fast, accurate time ac-
quiring and lower power consumption.
•
Serial Interface — Time and Date information includes: Year, Month, Day, Hour, Min-
ute, and Second. Multi-Protocols: GPS UTC(GPRMC), GPS Local (GPZDA),WWV, Wapiti
W4/W7/W9 and Wapiti T2 with the accuracy of one tenth second.
•
Sync Pulse Interface— Programmable Time Sync Pulse for NEMA and 17 /2 7
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Accuracy on UTC/GMT: Sync Pulse — 3 µs (micro-second), 1µs with 1PPS
•
LED Indicators— Power/GPS Status, Message Transmit
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LCD Display and Menu-Driven: easily adjust the parameters for operations
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Small compact housing measures approximately: 3” x 4” x 1.5”
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Built in battery backup to maintain real time clock for 21 days.
•
Flash based program and non-volatile memory.
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All Wapiti products support WG4
•
Wide Range Power Supply: 5-24 Volts DC, < 1 mA with Back Light
•
Operating Temperature: -2 °C ~ +7 °C
Wa p i ti M i c ro Sy s te m s
W G 4 G P S
4565 Glenbrook Rd Willoughby OH 44 94 Phone: 44 9751167 Fax: 44 95182 3 Http://wapitimicrosystems.com
GPS Time Reference
ART 1 : INSTALLATION
WG4 should be pre-tested at the controller cabinet location, prior to installation, to verify ade-
quate signal strength is available from the satellites.
1. Drill a hole through the top of the controller cabinet large enough to accommodate the
screw bar on the antenna assembly. The hole must be smooth with no sharp edges to provide
a watertight seal. NOTE: Precautions should be taken to prevent metal debris from drilling and
filing from falling into the control equipment.
2. Insert the GPS antenna through the hole and secure tightly with the lock nut. Screw the SMA
Antenna Plug in to the SMA RF Connector on the WG3 Unit. If using the Sync ulse Interface,
go to Step 3. If using the Serial Interface, go to Step 4.
3. Sync ulse Interface (For NEMA/17 / 2 7 /ATC Contact Closure Compatible Devices). Con-
nect the Sync pair wires to your controller sync input following the instructions of the controller
manufacturer. (Pin 8, Sync + and Pin 7, Sync -) Power can be supplied by any cabinet (5V -
24V) DC power source. (Pin 9 DC+ and Pin 5, DC Ground)
4. Serial Interface (Direct Connection for Wapiti Devices) - Connect the DB9-C2 interface ca-
ble to the WG3 and 17 /2 7 controller using C2 S for Local, C3 S for W7OSM with 68 , or
C4 S with HC11. (See Wapiti Application Notes). Power is supplied from the 17 controller us-
ing this interface method.
Check the LEDs on the WG4. The power LED should be either on or flashing . When on solid ,
the GPS is acquiring. When slowly flashing, the GPS is ready. Fast flashing indicates a Low DC volt
condition. DATA indicates data activity. Flash Time Display means still acquiring the GPS satellites.
ART 2: ROGRAMMING (Menu-Drive Display in the order of Appearance)
Mode Button: Select Display Modes (11) SELECT BUTTON: Change the Settings
*: default value. Mode without * is Display or Test Only (Note: data changes automatically saved)
ART 3 : TROUBLE SHOOTING
Blank Display and ower LED Off: Unplug DB9, and check connect from any power supply (5-24V)
Incorrect Time Displayed: Check the settings—Time Zone, DST Settings (SPR DST and WIN DST).
Flashing Time Display: allow few minutes after power up for acquiring the GPS signal.
Malfunction: when display locked, Menu frozen, or Extraneous Chars displayed, do power recycle
INSTALLATION AND ROGRAMMING GUIDE
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