Go Direct^® Energy Sensor (GDX-NRG)
Specifications and User Guide

TROUBLESHOOTING
Primary Test:

1. Connect the sensor to Graphical Analysis or LabQuest.
2. Make sure the load switch is in the “Internal 30 Ω” setting.
3. Connect the sensor to a 1.5 V battery (AAA, AA, C, or D).
4. The Potential should be approximately 1.5 V.

When connected to Graphical Analysis, choose Sensor Data Collection. Two graphs should appear on the screen: Potential vs. Time and Current vs. Time. In addition, you should see five meters at the bottom of the screen: Energy, Potential, Current, Power, and Resistance. If this doesn’t happen, verify that you have a current version of the software.
What software do I need to use a Vernier Energy Sensor?

Secondary Test:
If the above steps are successful and the unit is still not behaving properly when connected to your power source, try the following:

1. Check that all connections are secure and make sure the alligator clips are not touching each other.
2. Check that all connections involve metal touching metal, not metal touching wire insulation or something else.
3. Check that your power source is functioning properly. For example, see How do I test a KidWind generator?.
4. If the three steps above don’t reveal any problems, please contact Vernier technical support for assistance.

RELATED TIL ENTRIES
Readings from Vernier Energy Sensor are noisy.
Can I use the Vernier Energy Sensor in place of other voltage or current sensors?
Why doesn't the warning LED of my Energy Sensor come on?
Energy Sensor gives erratic readings with custom generator.

Software requirements
What software do I need to use a Vernier Energy Sensor?

BATTERY TROUBLESHOOTING
If the sensor can be turned on when connected by USB but not when disconnected from USB, it is likely that the battery just needs to be charged. In this case, charge the sensor for several hours and try again. If, however, the sensor won’t turn on when the USB cable is not connected even after charging, then the battery has likely reached its end of life and can no longer hold a charge. You can continue to use the sensor connected by USB, or you can replace the battery. The rechargeable battery in this sensor is covered by a one year warranty but should last two to five years in typical use. Note that if the battery is less than one year old and the sensor cannot be turned on even when connected by a working USB cable, another possibility is that the USB port is bad. In this case, contact Vernier technical support for assistance. 

SPECIFICATIONS
Source input potential range
± 30 V (external load only)
± 5 V (for internal load)

Source input current range
± 1 A (for external load only)
± 0.18 A (for internal load)

Resolution   1 mV, 40 μA

Input impedance  1 MΩ
Insertion resistance  1 Ω

Wireless specification   Bluetooth 4.2

Maximum wireless range   30 m

Battery   300 mA Li-Poly

Battery life (single full charge)  ~24 hours

Battery life (long term)  ~500 full charge cycles (several years depending on usage)

RELATED VERNIER PRODUCTS
Vernier Variable Load (VES-VL)
Vernier Resistor Board (VES-RB)