Vernier Tech Info Library TIL #1422

Photogate Troubleshooting and FAQs

Vernier Photogate, order code VPG-BTD, $45.00
Specifications and User Guide

TROUBLESHOOTING
-Primary Test: Is the shutter positioned properly? A mechanical shutter is used to block the internal gate, switching the device to laser gate mode.
-Secondary Test: Connect the photogate to a LabPro and run the data collection program. On the main screen, confirm that blocking and unblocking the gate is working OK by using your hand to block the gate.
-If the photogate is not working with your picket fence, make sure that the protective plastic covering the picket fence has been removed.

RELATED TIL ENTRIES
-TIL 1623: How do I set Logger Pro to use a photogate?
-TIL 1141: How are velocity and acceleration calculated when photogates are used?
-TIL 1401: Why are the velocity values from my photogates incorrect?
-TIL 1360: Why does my photogate not respond to block/unblock events?
-TIL 1279: Why doesn�t my new photogate autoID?
-TIL 696: Does the Pasco ME-6810 Time of Flight Accessory work with ULI, LabPro, and LabQuest?
-TIL 1658: My photogates won't work when daisy-chained.
-TIL 2074: Why is my picket fence blue and black instead of clear and black?
-TIL 2120: How can I collect data from a photogate and a motion detector data at the same time in Logger Pro?
-TIL 1467: What is the timing precision of photogate measurements in LabPro or LabQuest?
Public List of TIL Entries for VPG-BTD

SPECIFICATIONS
-new order code: VPG-BTD
-old order code: VPG-DG (ULI only)
-Power requirements: 5 VDC at 40 mA
-Infrared source: Peak at 880 nm
-Output is high and LED off for unblocked gate
-Output is low and LED on for blocked gate

CALIBRATION
It is not necessary to calibrate this sensor.

RELATED VERNIER PRODUCTS
-Super Pulley Attachment, Ultra Pulley Attachment, order code SPA, $24.00
-Picket Fence, order code PF, $7.00
-Bar Tape, order code TAPE, $5.00
-Laser Pointer, order code LASER, $19.00
-Laser Pointer Stand, order code STAND, $14.00

Created by: jrandall on May 07 2005
Last updated by: jhopkins on March 03 2010