Getting Started:
Plug in Power or install batteries, then power up by sliding the MODE/POWER switch to either
TRIGGER or CONT. On power up the display will show the current settings as below.
(1) Beep and display all characters
(2) Display the Battery voltage
(3) Display the Noise Filter setting
(4) Show the Display speed mode
(5) Show the delay between readings
(6) Show Beeper enabled or disabled
(7) Then show “0”, the selected units and ready to get speeds!
Underlined items
are user options that can be selected as described below under
Preferences.
To register a target's speed accurately, the target must be moving in the line of the
bore sight of the radar gun, and can either be going away, or coming towards the radar gun.
Trigger Mode:
Place the slide switch so it is in the center position, under the
TRIGGER line. When the trigger is pulled, the display will blank, and when a
speed is registered you will hear a Beep, and the display will show the speed(s)
Fastest only or Pitch and Plate. The speed will remain in the display until the
trigger is pulled again. If no speed is recorded, the display will return with “0”.
Continuous Mode:
This mode of operation will continuously look for valid
speeds and display them. Place the MODE/POWER slide switch in the CONT
(Continuous) position. When a speed is registered, the radar gun will beep and
display the speed for 2.5 seconds. After the delay between readings, the display
can be overwritten by a new speed when recorded. For best performance in the continuous mode
we recommend using a tri-pod or other fixed mounting to assist the internal “clutter filter” that can
remove unwanted noise sources that are constant in the field of view.
Power source:
The SR3800 can be powered by 2 standard 9V Alkaline batteries. Access the
battery compartment be pushing the “V” sight forward and lift off. Alternately, external power can
be supplied using the optional AC wall adapter. See Optional accessories on the back page for
details.
NOTE: The SR3800 jack will “sense” when external power is connected, and will not use any
battery power so there is no need to remove the batteries.
Preferences:
Allows you set up the radar gun for your specific requirements
. To select the
preferences menu, hold the trigger in while you switch the power on
. The display will show
the Firmware revision, then release the trigger. Each preference selection will “toggle” in the
display a few times to let you make a selection. When the desired preference is displayed, pull the
trigger to accept it, if no selection is made, the next preference is displayed. Preferences are
remembered.
Units: MPH or Km/h:
The display toggles between (SELect MPH) and (SELect
Km/h). When the desired units are displayed, pull the trigger to select it. The default is MPH
Display Speed Mode: Pitch and Plate speeds or Fastest speed only:
The Pitch and Plate speed is only available in the trigger mode, and is specifically designed to
capture and display both the pitch speed and the speed of the ball at the plate (end speed).
The display shows (Pitch and Plate) then shows (Fastest) When the desired option is
displayed, pull the trigger to accept it. The default is fastest speed only.
When Pitch and Plate is selected, the pitch speed will display with no beep, keep holding the
trigger until the ball is caught or otherwise stops moving. If the Beeper is enabled, the beeper will
then sound and the display will show: PCH (pause) then show the Pitch speed (pause) then show
PLA (pause) then show the Plate Speed, then repeat, and ending with the Pitch speed held in the
display until the trigger is pulled again. PCH = Pitch, PLA = Plate
Example: pause pause and repeat then (pitch speed).
Noise Filter:
The Noise Filter is used to reduce unwanted readings from interference. The
Noise Filter can be increased by pulling the trigger in the Continuous mode. Each time the trigger is
pulled the Noise Factor increases up to , then back to . nF1 is the least filtering that gives
the longest range, typically 120 feet on baseballs. nF9 is the highest Noise Filter setting, but will
reduce range, about 20 feet on balls. The Default is nF2 on power up.
Radar Data Port:
The Data Port sends RS232 serial data used EXCLUSIVELY to connect to
Sports Radar’s adapters and displays. DO NOT ATTEMPT TO CONNECT THIS PORT DIRECTLY
TO A COMPUTER OR OTHER EQUIPMENT WITHOUT OUR PC DONGLE, DAMAGE TO THE
RADAR GUN AND / OR THE EQUIPMENT YOU ARE CONNECTING TO CAN OCCUR. Complete
details, cables and adapters for the DataPort connection are provided with the remote display or
accessories purchased. Ask your retailer, or visit our web site at
http://www.sportsradargun.com
for
information on displays and adapters for the SR3800 RadarDataPort.
Low Battery indicator:
Low battery will be displayed when the batteries become low.
Best Practices:
For Best accuracy, the line of travel of the target (object being measured)
should be in line with the Radar gun. An off angle (called a cosine angle) will cause the recorded
speed to be less than the actual speed by the cosine of the angle. Targets can be moving towards,
or away from the radar gun.
Target is in-line with radar gun sighting for best performance
Target can be Target can be
moving away coming towards
Will not read the
Cosine angle
target speed when
will cause the
perpendicular to
speed to be less than
the target
than the actual.
Trouble Shooting:
Spurious, unwanted readings:
Sources of interference such as motors and fans, florescent
lights, TV and radio towers, nearby road traffic, and laptop computer screens can cause unwanted
readings. If possible, reposition radar gun so it is not pointing towards the source of interference.
Also, you can eliminate or reduce most noise or unwanted targets by selecting a higher filter setting.
Typically indoors is more “noisy” than out doors.
Speed Readings seem low:
This is caused by the cosine angle. Keep the Radar gun in as
close to inline with target travel as is safely possible. Below are some cosine error factors. You can
divide the displayed speed by error factor based on the angle below to correct for the angle.
Cosine angle
5 deg
10 deg
15 deg
20 deg
25 deg
30 deg
Error factor
0.99
.98
0.96
0.94
0.91
0.87
Delay between readings:
Select from slow (2.5 seconds) or fast (0.8 seconds). The display
shows (delay for 2.5 sec) then shows (delay for 0.5 sec) When the desired delay is
displayed, pull the trigger to accept it. The default is 2.5 sec delay.
Beeper ON or OFF:
The display shows (Beeper ON) then shows (Beeper OFF)
when the desired option is in the display; pull the trigger to accept it. Default is Beeper ON.
CAUTION:
Stay clear of all roadways. This device is not intended to measure the speed of vehicles. Do not use this unit with the 110-volt transformer in a wet or damp condition to avoid electrical
shock, which may cause death or permanent injury. To prevent personal injury or death, maintain a safe distance from the objects you are measuring speeds of.
Make sure power is off and do not use in areas designated or posted as prohibiting or to turn off: cell phones or radio transmitters or two-way radios. Always obey signs regarding radio frequency
devices. In addition to powering off, do not remove or install batteries in areas exposed to any potential explosive gasses because making and breaking the battery contact can cause sparking that could
ignite the gases. Keep at least 6 inches away from pacemakers to avoid any interference as recommended by the Health Industry Manufacturers Association.
