HP 5528A User Manual

Model 5526A
Angular Measurements
6-16
M eas urements At Sp ecific Ph ys i ca l Lo ca tions
To have your laser Measurement System make measurements only at specific physical locations-
1. Push the RESET key. {You c an also RESET from the Remote Control Unit.)
2. Move one of the optics a predetermined distance.
3. Press the RECORD button on the RemOle Conlrol Unit connected to Ihe Measurement
Display.
One measurement is made each lime you press this bulton.
M easuremen ts At Sp ecified Time In te rv als
To have your laser Measurement System make measurements at specific time intervals (i.e., "on-
the-fly" ) -
1. Push the RESET key. (You can also RESET from Ihe Remote Conlrol Unit)
2. Enter the time interval you want between measurements (0. 05 to 12 secondsl.
3. Press the AUTO RECORD key. This will start the automatic taking of dala. ( See Section 16 for
marc information about
using Ihis key .)
4. Move one optic al ong the full measurement palh. A measurement is made automatically every
so many seconds until you press the AUTO RECORD key again.
5. Press the AUTO RECORD key when the end of travel is reached. This will turn off the AUTO
RECORD mode, and end the recording of measurements.
If an HP Personal Computer or an HP-IB Printer is not connected to the Measurement Display
unit, pressing RECORD or AUTO RECORD will cause the message "lr Error" 10 be displayed.
WHAT AFFECTS ACCURACn
Angular accuracy is dependent upon the accuracy of the initial alignment between the angulilr
relleCiar and interferometer in pitch and roll.
Laser Sy s tem Error Sources
The one potential laser System error source for Angular measurements is the distance between
the RetrorefieClors.
If this distance changes during a measurement, the measurement results will
be incorrect. The only time the distance between the Retroreflectors will change is if the
temperature
of the Angular Reflector's housing changes during a measurement; thus you should
keep this temperature
as constant as you can.
Series 2648A
NOV 86

HP 5528A Specifications

General

Brand	HP
Model	5528A
Category	Measuring Instruments
Language	English