Accession Number:

AD0617914

Title:

A COMPARISON OF OPERABILITY AND READABILITY OF FOUR TYPES OF ROARY SELECTOR SWITCHES,

Descriptive Note:

Corporate Author:

AUTONETICS DOWNEY CALIF

Personal Author(s):

Report Date:

1965-06-01

Pagination or Media Count:

24.0

Abstract:

A fixed-scale rotary switch can be set faster than three types of moving-scale rotary switches. The more digits exposed, the faster a rotary switch can be positioned. A fixed-scale and three types of movingscale rotary switches can be set with equally high accuracy. The settings of moving-scale switches can be read more accurately than settings of the fixed-scale switch. The fewer digits exposed, the faster and more accurately a rotary switch can be read. It is recommended that moving-scale switches, rather than fixed-scale switches, be used where accuracy of switch position reading is more important than speed of setting. A moving-scale with 3 digits exposed is preferable to moving-scales with 1 or 10 digits exposed, because of advantages in speed of setting, accuracy of position reading, and subjective positioning preference. A hybrid switch should be developed to incorporate the outstanding features of both the fixed-scale and the moving-scale 3 digits switches. The hybrid switch should result in positioning speeds comparable to the present fixed scale type with a low reading error rate as is found in the moving-scale 3 digits type. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE