Topcon AP-L1A - Available Time Data Function

7. APPLICATION FUNCTIONS
7-11
7.5 Available Time Data Function
The data measured can be out put at specific measured time by AP-L1A. (For more informations,
refer to AP-L1A/AP-L1AN interface manual.) This timed data function is helpful for the purpose of
analyzing or comparing data collected in large volumes , and also available for post processing
connected with computer or other measuring device. For more informations, refer to AP-L1A/AP-
L1AN interface manual.
 Tracking and analyze traveling object.
 Comparison between three dimensional coordinate of traveling object measured by AP-
L1A and measured data measured by other instrument.
 Analyzing changes over long period of time.
Understand that the time mentioned may experience a time shift specially in distance measurement
when tracking a traveling object moving at high rates of speed as following:
 It takes 0.5 or 0.2 second for distance measurement in Tracking mode, and the measured
value is an average distance value within a period of time. The measured data will be
memorized in AP-L1A every 0.5 (0.2) second. (In the case of traveling objects moving fast,
measurement in fine mode can not be performed. Also, if unstable measuring light quantity
is experienced, this can be the cause of automatic remeasuring so that the period of 0.5
(0.2) second is not fixed period.)
 The measured data for angle measurement will be memorized in the instrument every 0.01
second by REC-A type or every 0.13 second by REC-B type.
Timing of output data by REC-A :
Distance measurement starts when data output command is received and measured
distance data will be output with memorized angle data when distance measurement is
completed. The mentioned time data is the time of output. The time data is almost
synchronized with angle and distance data.
Timing of output data by REC-B :
The latest measured distance and angle data which were memorized in the AP-L1A, will
be output with time data when data output command is received. The time shows output
time. So the time data is not synchronized with distance and angle data .
REC-A REC-B
Measured data
Measuring starts.
Memorize
Output
Output data
Receiving output
command
Time
Data output
0.1sec.
Angle
measurement
Distance
measurement
(Coarse mode
0.5sec.)
Output data
Output
Receiving output
command
Memorize
Memorize
Memorize
Memorize Memorize
0.5sec. 0.5~3 sec.
0.13sec.