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2022 HM Electronics, Inc. All rights reserved.
2
DIP SWITCH SETTINGS
Before installing the VDB102C/VDB102CR, the follow-
ing six functions can be set by switching/moving the
switches as indicated in Tables A through F below. Refer
to Figure 2.
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
ON
OFF
ON
Q3
CR5
C13
S1
Figure 2. S1 DIP Switch
Switch #1
Vehicle Presence Auto Reset
OFF
None
ON
20 Minute *
Switch #2
Turn-On Sensitivity
OFF
Normal (2 Hz) *
ON
Reduced (3 Hz)
Switch #3 Switch #4
Turn-Off Threshold
OFF
OFF
Extra Low (15%)
ON
OFF
Low (25%)
OFF
ON
Normal (35%) *
ON
ON
High (40%)
Switch #5
Vehicle Present Switching Test
OFF
Diagnostic off, normal operation *
ON
Diagnostic on, 10 sec on, 10 sec off
Switch #6 Switch #7
Output Delay
OFF
OFF
6 second
ON
OFF
4 second
OFF
ON
2 second
ON
ON
None *
Switch #8
Output Pulse
OFF
0.5 second
ON
Steady (no pulse) *
Tables A - F
* Factory Setting
SELF DIAGNOSTICS
If an abnormal condition with the loop or oscillator
occurs, the LED will indicate one of the following con-
ditions (see Table G). There is no Vehicle-Present signal
generated during the self-diagnostics.
Problem
LED Blink Rate
No oscillator (< 2 kHz)
or Shorted loop (< 2 kHz)
1 blink and a pause
Open loop (< 10 kHz)
2 blinks and a pause
Out of range (10-20 kHz)
3 blinks and a pause
Table G
RESET PROCEDURE
With no vehicle present over the vehicle detector loop,
press the reset switch in the base station or timer for 1
second, or unplug the power cable for 1 second. The
LED will go on for 3 seconds. Reset is completed when
the LED goes off.
TROUBLESHOOTING
Turn-On Sensitivity:
• Set to Reduced (3 Hz) to help prevent false turn-on
when the frequency drifts or varies due to a bad
loop.
Turn-Off Threshold:
• Set to High (40%) if run-on between cars occurs at
Normal (35%).
• Set to Extra Low (15%) or Low (25%) to compensate
for improperly positioned loops.
• Set for the highest percentage possible. Check for
run-on or dropouts and set for best operation.
This equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and used in accordance with
the instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interfer-
ence in which case the user will be required to correct the interference at his own
expense.
Waste Electrical and Electronic Equipment (WEEE)
The European Union (EU) WEEE Directive (2012/19/EU) places
an obligation on producers (manufacturers, distributors and/
or retailers) to take-back electronic products at the end of their
useful life. The WEEE Directive covers most HME products
being sold into the EU as of August 13, 2005. Manufacturers,
distributors and retailers are obliged to finance the costs of
recovery from municipal collection points, reuse, and recycling of
specified percentages per the WEEE requirements.
Instructions for Disposal of WEEE by Users in the European Union
The symbol shown below is on the product or on its packaging which indicates
that this product was put on the market after August 13, 2005 and must not be
disposed of with other waste. Instead, it is the user’s responsibility to dispose of
the user’s waste equipment by handing it over to a designated collection point for
the recycling of WEEE. The separate collection and recycling of waste equipment
at the time of disposal will help to conserve natural resources and ensure that it is
recycled in a manner that protects human health and the environment. For more
information about where you can drop off your waste equipment for recycling,
please contact your local authority, your household waste disposal service or the
seller from whom you purchased the product.
