Time Interval and Frequency Counter

xiiAbridged Command ListMODE(?) j Sets the instrument mode to 0 = time,1 = width, 2=tr/tf, 3 = freq, 4 = period, 5= phase, 6 = count.SIZE(?) jSets the number of samples.SRCE(?) jSets the measurement source to 0 = A, 1= B, 2= REF, 3 = ratio.STRTSame as pushing start button.STOPSame as pushing stop button.Data CommandsMEAS? jStartts a measurement and returns the result when it is complete. If j=0 themean is returned, j=1 returns the jitter, j=2 returns the max, and j=3 the min.XALL?Returns mean,rel,jitter,max,min of a measurement.XAVG?Returns the mean of measurement.XJIT?Returns the jitter of a measurement.XMAX?Returns the max of a measurement.XMIN?Returns the min of a measurement.XREL(?) x Sets the value of the display rel to x.XHST? j Returns section j of the histogram display as 4 byte binary integers.j=0 to 9.HSPT? jReturn the value of the point n on the histogram. j=1 to j = 250. Returns9E20 if graph is blank.SCAV? jReturns the value of point n (1 - 250) of the mean stripchart or the value ofscan point j. returns 9E20 if the stripchart is blank or the scan has notreachedpoint j.SCJT? jReturns the value of point n (1 - 250) of the jitter stripchart or the value ofscan point j. returns 9E20 if the stripchart is blank or the scan has notreached point j.BDMP j Binary dumps j points. Sample size = 1.Scan CommandsANMD(?) j Sets the DAC output mode of the mean and jitter DAC's to 0 = chart/chart, 1=DAC/chart, 2= chart/DAC,3 = DAC/DAC.DBEG(?) jSets the delay scan start position to 1-50000 step sizes after the externaltriggerDSEN(?) jEnables the internal delay scan . 0 = delay off, 1=delay hold, 2 = delay scan.DSTP(?) xSets the delay scan step size to 1,2,5 x 10 -2 , -3 , -4 , -5 , -6 . 1 x 10 –2 is themaximum step size.HOLD(?) xSets the hold time between scan points from .01s to 1000 s in .01 s stepsSCANClears and restarts a scan.SCEN(?) jEnables scanning. 0 = disabled,1= single scan mode 2 = repeat scan modeSCLRClears the scan.SLOC?Returns the number of the last completed scan point. Returns 0 if no pointsare complete.SCPT(?) j Sets number of scan points to 2,5,10,25,50,125,250.VBEG(?) j,xSets the DAC output scan starting voltage. If scans are disabled or the stepsize is zero the output is immediately set to the new voltage. Otherwise, thevoltage is updated at the start of the next scan.VOUT? j Reads the current output voltage of DAC channel j.VSTP(?) j,xSets the DAC scan step size to x volts.Graphics Control CommandsAUTP(?) jSets the autoprint mode to 0 = off or 1 = on.AUTSAutoscales the displayed graph.CURS (?) j Sets the cursor position to j.DGPH(?) jSets the displayed graph to 0 = histogram,1= mean,2 = jitterGCLRClears the displayed graph.SR620 Universal Time Interval Counter