Anritsu ML2430A - Manual (Page 84)

5-15
OPTIMIZING
READINGS This section presents information on how to get the fastest readings from the
ML2430A Series power meter when operating under GPIB control. Refer to
Chapter 6, GPIB Operation, for specific command descriptions.
Measurement speed depends greatly on the type of measurements being taken,
the power level, and the amount of settling used.
NOTES
All results shown in this section are from DOS programs
running on a 200 MHz controller using IEEE 488.2 GPIB
function calls. The timings (readings/second) presented in
this section are for illustrative purposes only.
Using the default system set up (system preset), the “O 1” (page 6-57) command
is used to retrieve one reading from channel 1 ten times (channel 1 = Sensor A).
C code example:
/* Reset the unit */
Send(0, 13, “*RST”, 4L, NLend);
/* Ask for 10 readings */
for(i=0; i<10; i++)
{
Send(0, 13, “O 1”, 3L, NLend);
Receive(0, 13, buffer[i], 20, STOPend);
}
Settling (%) Power Level (dBm) Readings/Second
0.1 0 150
0.1 –30 150
10.0 –30 150
There are, however, methods of improving the speed of the measurement without
having to change the power level or settling time.
DISP
ON/OFF
command
Using the DISP command (page 6-33), the readout display can be turned OFF,
yet data can still be acquired from the readout channels.
C code example:
/* turn display off */
Send(0, 13, “DISP OFF”, 8L, NLend);
/*Ask for 10 readings */
for(i=0; i<10; i++)
{
ML2430A OM 5-21
PROCEDURES OPTIMIZING READINGS