Specifications
When ordering APS units from the manufacturer, practitioners will need to be specific concerning the features and settings that they desire or require. The level of detail required by the manufacturer varies depending on the company.
Elements of a specification sheet should inform the manufacturer of the characteristics of the location where the APS will be installed and which APS features will be required by the city or state. The following list contains suggested elements for a detailed specification sheet. APS units do not necessarily need to have all these features, but the practitioner should be sure to consider the appropriateness of all features and specify which ones are required for the selected APS installation.
- Type of WALK indication required (tone or speech message)
- Text and name of street for speech WALK indication (if used)
- Requirement for "extended button press" function and specification as to what this function would need to do (e.g., provide pushbutton information message, provide louder WALK indication, etc.)
- Requirement for vibrotactile arrow
- Requirement for pushbutton information message
- Text for pushbutton information message (if used)
- Requirement for audible, visual, and/or tactile feedback of pushbutton activation
- Orientation of tactile arrow for each unit
- Text to be encoded into Braille for imprinting on pushbutton or informational sign
- Anticipated mounting (wood or metal pole)
- Required location of control unit (ped head or cabinet)
- Required factory settings for
- WALK indication volume (minimum and maximum and amount over ambient)
- Locator tone volume (minimum and maximum and amount over ambient)
- Electrical operating requirements (e.g., voltage, etc)
- Wiring requirements (e.g., number of wires, gauge)
- Required operating temperature range
- Requirement for built-in WALK/DONT WALK conflict detection
- Warranty duration and coverage
- Follow-up support and assistance available from the manufacturer
It is also useful to include an intersection diagram showing:
- crosswalks to be controlled
- pushbutton locations
- speaker locations and angle (if pedhead-mounted speakers are desired)
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