Model 4200A-SCS Parameter Analyzer Reference Manual
Section 13: LPT library function reference
4200A-901-01 Rev. C / February 2017
13-119
Amplitude and base level:
The pulse card can step or sweep amplitude (with base level fixed) or step or sweep base level (with
amplitude fixed).
SweepType
examples:
•
PULSE_AMPLITUDE_SP
(stepping or sweeping): Start = 1 V, stop = 5 V, step = 1 V
Voltage amplitudes for pulse output sequence: 1 V, 2 V, 3 V, 4 V, and 5 V.
Note: Use the
pulse_vlow
function to set the base level voltage.
•
PULSE_BASE_SP
(stepping or sweeping): Start = 5 V, stop = 1 V, step = -1 V
Voltage base levels for pulse output sequence: 5 V, 4 V, 3 V, 2 V, and 1 V.
Note: Use the
pulse_vhigh
function to set the amplitude voltage.
DC voltage level:
The pulse card can step or sweep a DC level. SweepType example:
PULSE_DC_SP
(stepping or sweeping): Start = 1 V, stop = 5 V, step = 1 V
DC voltage output sequence: 1 V, 2 V, 3 V, 4 V, and 5 V.
Pulse period:
The pulse period is the time interval between the start of the rising transition edge of consecutive
output pulses (see
(on page 6-102)). SweepType example:
PULSE_PERIOD_SP
(stepping or sweeping): Start = 0.01 s, stop = 0.05 s,
step = 0.01 s
Pulse periods for output sequence: 0.01 s, 0.02 s, 0.03 s, 0.04 s, and 0.05 s.
Pulse rise time and fall time:
Pulse rise time is the transition time (in seconds) from pulse low to pulse high. Pulse fall time is the
transition time from pulse high to pulse low. The transition time is the interval between corresponding
0% and 100% amplitude points on the rising and falling edge of the pulse, as shown in the following
figure.
Figure 506: Transition time
SweepType examples:
PULSE_RISE_SP
(stepping or sweeping): Start = 0.001 s, stop = 0.005 s,
step = 0.001 s
Rise times for pulse output sequence: 0.001 s, 0.002 s, 0.003 s, 0.004 s, and 0.005 s.
PULSE_FALL_SP
(stepping or sweeping): Start = 0.001 s, stop = 0.005 s,
step = 0.001 s
Fall times for pulse output sequence: 0.001 s, 0.002 s, 0.003 s, 0.004 s, and 0.005 s.
