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DU100

The DU100 hand-held test instrument provides Advanced Diagnostic capabilities for use with all the latest Nortech inductive Loop Vehicle Detectors.
This device provides installation and service personnel with positive verification of the correct operation of a vehicle detector installation.

APPLICATIONS

The DU100 is indispensable as a diagnostic test unit in the commissioning of new installations, for fault-finding problem sites and for routine maintenance checks.

· Setting detector sensitivity
· Performance checks on loop and installation
· Proving intermittent failures
· Eliminating detector crosstalk

FEATURES

· Compact, Self-Contained
Test Unit:

The DU100 is a low-cost, battery-powered, hand-held test device designed to be used on site with minimum effort and maximum results.

· Exclusive Optical Readout:

The DU100 test unit extracts data from the vehicle detector by optical means. No inconvenient diagnostics plugs necessary on the detector. Advanced Diagnostics features protected by S.A. PAT APPLN 93/5634.

· No Service Disruption:

The Diagnostics data is transmitted continuously during normal operation of the detector. Immediate display of actual operation conditions is possible as they occur without service interruption.

· Loop Diagnosis:

Easy to read display of important detector operating parameters captured from the unit under evaluation make it easy to check detector performance.

· Historical Data Availability:

Unlike other diagnostic units, the DU100 can process information retained in the detector to indicate historical operating conditions. This information is invaluable in proving intermittent faults and disproving product liability claims.

· Language Options:

Available in English, German, French, Italian and Spanish.

· Unique Crosstalk Monitor:

The DU100 will automatically monitor operational data collected from multiple loop installations and report potential crosstalk situations.

DU 100 - Technical Data


Frequency Resolution:	1 Hz
Sensitivity Resolution:	0.001% L/L
Display Element:	2 line x16 character LCD
Display Contrast:	Adjustable via multi function keyswitch.
Keyswitch:	1 x Modeselection 1 x Power–on/execute
Auto Power Off:	2 minutes after last operation.
Optical Receiver:	Detachable wand with photo–diode.
Power Supply:	4 x 1.5 V AA dry cell
Battery Life:	> 10 hours continuous
Operating Temperature Range:	0°C - +50°C
Dimensions:	200mm(height) x 100mm (width) x 40mm (depth)
Weight:	380gms including batteries

OPERATIONAL MODES


Loop mode:	Displays the instantaneous loop frequency (Floop) and sensitivity (L/L) of the currently selected channel. This mode is used to monitor actual changes as vehicles traverse the loop.
Frequency mode:	Displays the original loop frequency. (Finit) and the maximum frequency drift (Fdrift) since the last detector reset.
Sensitivity mode:	Displays the maximum(L/L Max) and minimum (L/L Min) inductance change recorded by the detector since the last reset.
Status mode:	Indicates the current detector and loop status (tuning, detect, open circuit loop, short circuit loop etc).
Time mode:	Records the elapsed time since the last fault and indicates the cause of reset.
Crosstalk mode:	Allows evaluation of a potential crosstalk situation between the two loops. Ensures adequate frequency separation between various loops on a site.
Built-in self-test mode:	Confirms proper operation of the diagnostic unit. Includes testing of the eprom, display, keyswitches and optical receiver.