VXI VT1538A user manual For PERiod function, the E1538 spports two distinct measurement ranges

Measure Period Use [SENSe:]PERiod:MODe APERture NPERiods,(@<ch_list>) to select the measurement interval setting mode.

Depending on the mode selected above use [SENSe:]PERiod:APERture <time>,(@<ch_list>) or

use [SENSe:]PERiod:NPERiods <n_periods>,(@<ch_list>) to set the interval for measuring and averaging signal periods.

For PERiod function, the E1538 spports two distinct measurement ranges:

1.When SENS:PER:RANGE is set to 1sec, the E1538 can measure periods from 10usec - 1sec. The value of SENS:PER:APER can range from 10usec - 1sec.

2.When SENS:PER:RANGE is set to 4sec, the E1538 can measure periods from 40usec - 4sec. The value of SENS:PER:APER can range from 40usec - 4sec. See SENS:PER:RANGE command on page 61

Use [SENSe:]FUNCtion:PERiod (@<ch_list>) to configure channels to measure signal period.

To measure the signal period at channel 45 with aperture of 01 second

*RST TRIGGER:TIMER .2 SENS:FUNC:PER (@145) SENS:PER:RANGE 1,(@145) SENS:PER:MODE APER(@145) SENS:PER:APER 1,(@145) ALG:DEF ’ALG1’,’writecvt(I145,45);’

INIT do loop

SENS:DATA:CVT? (@45)

read value from CVT query above end loop

Alg executes at .2 sec intervals ch 45 to measure signal period set period range 10μsec - 1sec set meas and avg interval mode meas and avg sig periods for 1S alg puts period in CVT

start algorithm execution

get period from CVT

Figure 11. Input Period

18 Agilent E1538A Enhanced Frequency/Totalize/PWM SCP