Physical Specifications
Dimensions
Weight
Case construction 		164(W) x 62.5(H) x 13.5(D)mm
133 grams
Lightweight, durable polycarbonate/ABS blend. Facia is screen printed, embossed polycarbonate
Display
Type
Size
“RATE”
“FARE”
“EXTRAS” 		Extra bright 7 segment multicoloured
14mm high
1 x RED
6 x GREEN
3 x AMBER
Switches
Type
Size
Functions


 Illuminated tactile switches
14 x 9mm (easy to press)
“Tariff” Tariff/Sleep
“Mem.Tot” Memory/Total
“Ext.Clr” Extras/Clear/Vacant
“Fare” Start/Stop
Memory
Type
 Non-volatile (retains memory even with power failure)
Clock and historical fare data is backed up by an internal long-life lithium cell.
G4 Relay Harness (included with every G4 taximeter purchase)
Dimensions
Weight
Cable to connect to G4 Meter
Inputs



Outputs



Interface ports
 82.4(L) x 53.5(W) x 30.5(H)mm
226 grams
2.5 meters long, 6mm diameter
“Dist.” Connects to vehicle speedometer
(see support page to locate the speedometer wire in your vehicle)
“12V” 12V, 5A fused link to vehicle battery
“Gnd” Connect direct to vehicle chassis or negative battery terminal
“Vac” 12V relay switched output to drive VACANT roof-light indicator
“T1” Tariff 1 roof-light indicator
“T2” Tariff 2 roof-light indicator
“NC” 12V output to other equipment indicating HIRED/VACANT
2 RJ12 connectors on the G4 Harness are used to interface with other devices.
For information on how these ports operate, see the next section.
Interfacing with other devices
Switched voltage in/outputs

Interface link: “Comm 1”


Secondary display: “Comm 2” 		The G4 Relay Harness (see above) can receive speedometer information, control up to
three roof-light indicators and output a “Hired” signal using 12V switched signals.
Using a Protocol Converter, the G4 Taximeter can send/receive information to most taxi equipment
(including EFTPOS systems, dispatchers, printers, GPS receivers, automatic toll receivers, etc.)
The interface uses a RS232 serial connection.
Option for secondary slave display for passengers in rear of vehicle
Tariff and Rate Structure
Number of tariffs
Tariff switching modes




Future dated rate changes

Rate structure of each tariff


Extras


Roof light controls
Share Ride
 Up to 16 programmable tariffs
Each tariff can be programmed to switch by:
– time of day
– date
– button press
– controlled by external equipment
Option to program new rates into the G4 taximeter days or weeks before the new rates come into effect.
New rates take effect at programmable date and time.
Each tariff can be programmed to increment the fare based on:
– Initial fare (at start of fare, after a particular distance or after a particular time)
– Next increments (dollars per distance, dollars per time or whichever comes first)
The extras can be unique for each tariff.
Added to fare by pressing the “Extras” button.
Many options for extras can be programmed (single extra, multiple extras, incremental extras)
Each tariff can be set to change any of the 3 roof-light indicators
Programmable option for Share Ride.
Can stop fare at first drop-off location, and continue fare to second drop-off location.
Power Specifications
Operating Voltage
Current Protection

Power consumption
 9-12 V
Internal 10A fused link
Recommended installation of 5A fused link from battery
3.5 Watts operating
0.32 Watts sleep mode
Driver Functions
Fares
Vacant light

Memory functions
ct  
cd  
01  
(Victoria Only) 01A  
02  
03  
04  
05  
06  
07  
08  
09  
(Victoria Only) 09A  
10  
(Victoria Only) 10A  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
Memory clearing
 Drivers can Start, stop, total and clear fares
The vacant light is automatically turned on when a fare is not running.
This option can be de-activated with a button press.
The G4 taximeter has over 25 memory locations accessed with the “memory” button including:
Current Time (24 hr clock) (hr.min)
Current Date (dd/mm/yy)
Shift Money ($.c)
Shift Surcharge ($.c)
Shift Money per Hour ($/hr)
Shift Money per Km ($/km)
Shift Kilometres (km)
Last Job Fare ($.c)
Last Job Extras ($.c)
Last Job Distance (km)
Last Job Start Time (hr.min)
Last Job Finish Time (hr.min)
Total Surcharge ($.c)
Total Money ($.c)
Total Money Less Surcharge ($.c)
Total Flagfalls ($.c)
Total Units ($.c)
Total Extras ($.c)
Total Trips
Paid Kilometres (km)
Total Kilometres (km)
Current Calibration (pulses/km)
Speedometer Pulse Counter
Software Version / Clear Shift
Km Travelled Since Last Job (km)
Total Distance Units ($.c)
Total Waiting Time Units ($.c)
Speed (kph)
Tariff ID
The driver can clear the Shift data manually.
The taximeter totals cannot be cleared by a driver.
Service Functions (using the optional G4 Programming Module)
Programming


Memory clearing
Calibrating the taximeter



Security seals

Serial Numbers
 Programming is performed using the Programming Module.
A customised tariff structure can be programmed into a Programming Module.
Taximeters can be re-programmed without removing the taximeter from the vehicle.
The meter totals can be cleared using the Programming Module.
The G4 Taximeter has an inbuilt function to make calibration quick and easy.
Calibrations typically take 15 minutes and can be performed anywhere.
For added security, in most jurisdictions, calibrations can only be performed
using a G4 Programming Module.
Many jurisdictions require physical sealing of taximeters.
Plastic seals and sealing wire are available on request (see accessories page).
Unique serial numbers are printed on the front case of every G4 taximeter. They can also be
internally programmed to ensure taximeters are not swapped without owner permission
Accuracy
Distance measurement
Time measurement
 0.0002% typical, 0.01% worst case
0.00005% typical, 0.01% worst case
Independently tested to be a highly accurate taximeter.
Warranty and Service
Warranty
Service and repairs 		The G4 taximeter kit comes with a 2 year warranty on manufacturing defects.
Schmidt Electronic Laboratories provide service, repairs and parts for all current equipment.
The Standard Kit
1 x Schmidt G4 Taximeter head
1 x Front panel screw kit
1 x G4 Relay Harness
1 x G4 Mounting kit
1 x Operating Manual 		Pre-programmed to your specifications
Includes a custom security sealing screw

Includes 2 steel brackets, industrial strength double-sided tape and bolts
Manual is also downloadable as a PDF from the support page.

See accessories page for optional extras