User manual
R2020 Wired Display
The R2020 includes a DB9 connector for connecting to a Jugs
radar gun.
Whats Included
The following items are included with each radar gun display.
Display with 7 inch high digits can display speeds
from 0 to 199.
Includes an integrated battery charger and
connections for the radar gun. xxx
Wall transformer to operate the display.
Optional Battery pack with integrated battery charger
for portable use. xxx
Operation
The R2020 is easy to use. .
Set the R2020 display in the field where it is
convenient for easy viewing. It is best to have the
radar gun in a line of sight between the display and
the radar gun.
Attach the radar gun cable to the DB9 (9 pin
connector) on the rear of the unit. Be very careful to
not bend the pins when making the connection.
Tighten the 2 thumb screws on the DB9 connector.
This will keep the connector securely attached to the
back of the display.
Connect the other end of the cable to the Radar
Gun.
Plug the XXXXX into either a battery pack or use a
wall adapter to connect to AC power. xxx
Press and hold the ON button for 2-3 seconds until
the display lights up.
The display should show a test pattern when turning
on.
The Tap the ON button on the radar gun. The
display on the radar gun should light up.
Test the connection. Thump the tuning fork supplied
with the radar gun and place it in front of the radar
gun. The display should show the speed value
represented by the tuning fork on both the radar gun
and on the R2020 display.
You are now ready for the game or other activity.
When finished for the day, re-connect the battery pack to
AC power when not in use.
Storage
When the display is not used for extended periods of time, the
internal batteries will slowly discharge over time.
It is very important to not permit the AGM or Gell
Cell batteries used in the external battery pack to
dischage below 11 volts. Over discharging can ruin
the batteries.
When the displays are NOT being used, it is best to
keep both the display and the battery pack plugged
into the charger. The batteries cannot be over
charged. The battery charger is an intelligent battery
charger that maintains a trickle charge to keep the
batteries at full charge, but shuts off when necessary
to prevent any possibility of over charging.
Your display will always be ready for use and should be
able to run all day on a single charge.
Display Specifications
Controls: Two buttons. One button is used to turn
the power on and also to generate a test pattern on
the display. The other button is used to turn the
display off.
Indicators: LED indicators to indicate charging and
charge status.
RS-232 Connector: RS-232 serial data connector so
the display can be used as a wired display.
TX-422 Connector: RS-422 serial data connector to
transmit serial data to other displays or to a
computer.
RX-422 Connector: RS-422 serial data connector
receive serial data from another display or radar gun
with RS-422 port.
Data rate: 1,200 baud on the serial port when used
as a wired display.
Manufactured for the Jugs Company by Alzatex. Inc.
3
05/20/08
