Quantcast SELF TEST ERROR.

 

Click here to make tpub.com your Home Page

Page Title: SELF TEST ERROR.
Back | Up | Next

Click here for thousands of PDF manuals

Google


Web
www.tpub.com

Home

   
Information Categories
.... Administration
Advancement
Aerographer
Automotive
Aviation
Construction
Diving
Draftsman
Engineering
Electronics
Food and Cooking
Logistics
Math
Medical
Music
Nuclear Fundamentals
Photography
Religion
   
   

 

Share on Google+Share on FacebookShare on LinkedInShare on TwitterShare on DiggShare on Stumble Upon
Back
TURNING INSTRUMENT ON.
Up
TM-9-6625-2465-15 Electronic Stroboscope (General Radio Type 1531-AB STROBOTAC) 6680-892-1560 Manual
Next
SPEED MEASUREMENT.


To.  TEST the stroboscope, proceed as follows:
a. Allow the instrument to warm up for about 10 minutes.
b. Refer to SELF TEST table in the instrument cover or to Table
2-1 for the HIGH CAL and LOW CAL RPM dial settings indicated for the
power -line frequency being used. Turn the range switch to the corres -
pending range required to make these settings.
c. Set the RPM dial to the exact HIGH CAL RPM dial setting called
for in the SELF TEST table.
d. Adjust the HIGH CAL screwdriver control until the on -off pattern
of the CAL neon indicator lamp stops, or nearly stops (refer to para -
graph 2.7.2),
e. Set the RPM dial at the exact LOW CA L RPM dial setting indicated
in the SELF TEST table and adjust the LOW CA L screwdriver control until
the on-off pattern of the CAL neon indicator lamp stops, or nearly stops.
f. Return the RPM dial to the HIGH CAL RPM setting. If the CAL
indicator lamp blinks on and off too rapidly, repeat steps d, e, and f.
This step is usually not necessary unless the LOW CAL adjustment was
changed substantially.
g. The RPM dial is now calibrated to within 1% on all scales.
SELF TEST DATA
RPM Dial Settings
Powe+Line
HIGH CAL
LOW CAL .
Frequency
50
3000
750
3600
60
900
400
6000
24,000
2.7.2 SELF TEST ERROR.
The action of the CAL indicator lamp is used to determine when
either of the HIGH CAL or LOW CAL adjustments are properly set. Ex -
tremely slow on-off action of the lamp indicates the calibration setting
is very close to the line frequency and generlly accurate enough for
most speed measurements. If desired, the SELF TEST error can be
calculated as follows:
a. First, observe the period (in seconds) required for the CAL
indicator lamp to complete one full cycle on to off to on again, for
example.
Then, calculate the SELF TEST error by:
RPM
= rpm error
line frequency (c/s) xT
7


Privacy Statement - Press Release - Copyright Information. - Contact Us

Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business