LISUN LSG-1950S Goniophotometer for Traffic Signal Lamps – After Sales Questions and Answers

LSG-1950S is a high accuracy automatic test system for luminous intensity distribution of traffic signal luminaires and it can be applied to quality evaluation and quality control. Fully meet the Final Report PC13050202 Oregon, ECE-R65, FMVSS108, GB13954 and GB 25991 Standard.

• Rotations of samples under test around both vertical axis (-90°~+90°) and horizontal axis (-35°~+35°)
• Accuracy of angle: 0.1°
• Resolution of angle: 0.01°
• Photometer detector: CIE class A (standard class) accuracy
• Software controls everything with high intellectual faculties and simple operation

Q1: The power factor displayed in the electrical parameter table is negative.
A1: Please connect the wire A1 A2 on the back of the electrical parameter table by exchange.

Q2: (Try to use DC type electrical parameter meter) The DC voltage is negative.
A2: Swap the wiring V1 and V2 on the back of the electrical parameter meter.

Q3: The software cannot communicate.
A3: Confirm that the drive of the communication box is installed successfully.

Connect the other end of the USB cable to the black USB 2.0 port of the computer. Please try to use a desktop computer. USB is connected to the black USB2.0 port on the back of the host computer.

Q4: When the software is opened, it prompts “File is not a database”.
A4: Click the white button below to create a new database file and save it on the computer. Later test results will be automatically saved in this file. If the file is deleted or the location is moved, you need to reopen the database file or create a new database file.

Q5: The standard lamp cannot be lit.
A5: Confirm that the cabinet AC/DC switch is at the DC end.

Check and confirm that the filament of standard lamp is still intact.

The standard lamp is a constant current light source.
①. Select DC power supply.
②. Input the voltage and current value consistent with the standard lamp certificate, and select CC (constant current mode).
③. Illuminates.

If it still cannot be lit, there is a problem with the wiring. Please check the wiring according to the instruction manual.

Q6: The calibration distance is quite different from the actual distance.
A6: After successful calibration, the calibration distance automatically calculated by the software is displayed here

The actual distance of the darkroom is the distance from the center of the distribution photometer to the probe. Please refer to the darkroom drawing or take actual measurements.
The difference between the two distances should be controlled within 2% or less. If the difference is too large, the following steps may not be good enough:
①. The standard lamp is unstable. The calibration can be carried out only after the standard lamp is turned on and stabilized for 15 minutes.
②. The darkroom is not painted completely matte black. It may leak light or reflect light.
③. Hardware debugging is not well adjusted. Including host level, probe position and direction, gamma axis zero setting, etc.
④. During calibration, the adjustment of standard lamp direction is incorrect.
Please check the darkroom and refer to the instruction manual.

Q7: The DC sample lamp cannot be lit.
A7: Please make sure that the voltage and current of the sample lamp are within the limits of the DC power supply. For example, the maximum output voltage of DC3005 DC power supply is 30V, and the maximum output current is 5A.
If the sample needs a constant current power supply (CC), input its rated current value and a high enough voltage.
If the sample needs a constant voltage power supply (CV), input its rated voltage value and sufficient current.

Lisun Instruments Limited was found by LISUN GROUP in 2003. LISUN quality system has been strictly certified by ISO9001:2015. As a CIE Membership, LISUN products are designed based on CIE, IEC and other international or national standards. All products passed CE certificate and authenticated by the third party lab.

Our main products are Goniophotometer, Integrating Sphere, Spectroradiometer, Surge Generator, ESD Simulator Guns, EMI Receiver, EMC Test Equipment, Electrical Safety Tester, Environmental Chamber, Temperature Chamber, Climate Chamber, Thermal Chamber, Salt Spray Test, Dust Test Chamber, Waterproof Test, RoHS Test (EDXRF), Glow Wire Test and Needle Flame Test.

Please feel free to contact us if you need any support.
Tech Dep: Service@Lisungroup.com, Cell/WhatsApp:+8615317907381
Sales Dep: Sales@Lisungroup.com, Cell/WhatsApp:+8618117273997

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