scope- Digital Phosphor Oscilloscope¶

This class is written for Tektronix Digital Phosphor Oscilloscope 7104. It supports following methods.

Channel settings¶

channel_offset(instr,ch_no, v_offset), sets the offset of a given channel.
channel_scale(instr,ch_no, v_scale), sets the vertical scale.
horz_scale(instr,scale), sets the horizontal scale.
bandwidth_full(instr,ch_no), sets the maximum bandwidth.
set_bandwidth(instr,ch_no,bw), sets the bandwidth to a given value.
autoset(instr), auto sets the scope.
set_abs_ref_lev(instr,abs_min_ref_lev,abs_max_ref_lev), sets the absolute reference levels used for rise fall delay measurements.
set_perc_ref_lev(instr,perc_min_ref_lev,perc_max_ref_lev), sets the percentage reference levels used for rise fall measurements.

run(instr), starts the acquisitions.
stop(instr), stops acquisitions.
run_mode(instr), configures the scope in continuous run mode.
single(instr), configures the in single acquisition mode.
single_refresh(instr), turns on the previously set acquisition mode.
averaging(instr,no_avg), configures in the averaging mode.
high_resolution(instr), configures in high resolution mode.
single_acquisition_quickset(instr,ch_no,lev,edge), clears measurements, sets the trigger and starts the single mode acquisition.

trigger_quickset_rise(instr, ch_no,lev), sets the rising edge trigger level for a given channel.
trigger_quickset_fall(instr, ch_no,lev), sets the falling edge trigger level for a given channel.

meas_cls(instr), clears the previous measurements.
measure_source(instr,ch_no), sets the given channel as default channel for measurements.
measure_amp(instr), measures immediate amplitude of the default channel.
measure_high(instr), measure immediate high value.
measure_low(instr), measures immediate low value.
measure_freq(instr), measures immediate frequency value.
measure_positive_duty(instr), measures immediate positive duty cycle.
measure_negative_duty(instr), measures immediate negative duty cycle.
measure_rise_time(instr), measures immediate rise time.
measure_fall_time(instr),measures immediate fall time.
measure_positive_pulse_width(instr), measures immediate positive pulse width.
measure_negative_pulse_width(instr), measures immediate negative pulse width.
delay(instr, ch1=1, ch2=2,edge_ch1 = ‘RISE’,edge_ch2 = ‘FALL’,direction =’FORW’), measures delay between two channels for given edge type and direction.

dpojet_clr_meas, clears the measurements.
dpojet_state(instr), queries the state of the dpojet application.
dpojet_run(instr), runs the application.
dpojet_stop(instr), stops the application.
dpojet_population(instr,n), sets the population.
def dpojet_period(instr), sets the time period measurement.
def dpojet_result(instr), queries the measured values.
dpojet_status_query(instr), queries the status of measurement.
dpojet_quickset(instr,n), configures and measures the jitter in time period.