Tektronix TDS5000B Series Online Programmer Guide

TDS5000B Online Programmer Guide
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MEASUrement:MEAS<x>:REFLevel:METHod
Description
This command specifies or queries the reference level units used for
measurement calculations. This command is equivalent to selecting
Reference Levels from the Measure menu and then choosing the de-
sired reference level from the Units group box. Measurements are spe-
cified by x, which ranges from 1 through 8.
Group
Measurement
Syntax 1
MEASUrement:MEAS<x>:REFLevel:METHod {ABSo-
lute|PERCent}
Syntax 2
MEASUrement:MEAS<x>:REFLevel:METHod?
Arguments
H ABSolute
This specifies that the reference levels are set explicitly using the
MEASUrement:MEAS<x>:REFLevel:ABSolute commands. This
method is useful when precise values are required. For instance, when
designing to published interface specifications, such as RS--232--C.
H PERCent
This specifies that the reference levels are calculated as a percent rela-
tive to HIGH and LOW. The percentages are defined using the MEA-
SUrement:MEAS<x>:REFLevel:PERCent commands.
Example 1
MEASUREMENT:MEAS1:REFLEVEL:METHOD ABSOLUTE
This command specifies that explicit user--defined values are used for
the reference levels.
Example 2
MEASUREMENT:MEAS1:REFLEVEL:METHOD?
This query might return
:MEASUREMENT:MEAS1:REFLEVEL:METHOD PERCENT
indicating that the reference level units used are calculated as a percent
relative to HIGH and LOW.

Tektronix TDS5000B Series Specifications

General

Channels	2 or 4
Vertical Resolution	8 bits
Display Type	Color LCD
Vertical Sensitivity	1 mV/div to 10 V/div
Input Coupling	AC, DC, GND
Timebase Accuracy	± 50 ppm
Operating Temperature	0 °C to +50 °C
Bandwidth	up to 1 GHz
Sample Rate	up to 5 GS/s
Display Size	10.4 inches
Input Impedance	1 MΩ ± 1%
Trigger Types	Edge, Pulse Width, Logic, Runt, Timeout, Setup/Hold
Maximum Input Voltage	300 V (DC + peak AC)
Interface	USB, GPIB, Ethernet