Agilent Technologies InfiniiVision 6000 Series Instrukcja Obsługi Pobierz pdf (Strona 407)

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101

Commands by Subsystem 5

Agilent InfiniiVision 6000 Series Oscilloscopes Programmer's Guide 407

:POD<n>:THReshold

(see page 798)

Command Syntax

:POD<n>:THReshold <type>[<suffix>]

<n> ::= An integer, 1 or 2, is attached as a suffix to the command and

defines the group of channels that are affected by the command.

<type> ::= {CMOS | ECL | TTL | <user defined value>}

<user defined value> ::= -8.00 to +8.00 in NR3 format

<suffix> ::= {V | mV | uV}

POD1 ::= D0-D7

POD2 ::= D8-D15

TTL ::= 1.4V

CMOS ::= 2.5V

ECL ::= -1.3V

The :POD<n>:THReshold command sets the threshold for the specified

group of channels. The threshold is used for triggering purposes and for

displaying the digital data as high (above the threshold) or low (below the

threshold).

Query Syntax

:POD<n>:THReshold?

The :POD<n>:THReshold? query returns the threshold value for the

specified group of channels.

Return Format

<threshold> ::= Floating point number in NR3 format

See Also • "Introduction to :POD<n> Commands" on page 404

• ":DIGital<n>:THReshold" on page 255

• ":TRIGger[:EDGE]:LEVel" on page 513

Example Code

' THRESHOLD - This command is used to set the voltage threshold for

' the waveforms. There are three preset values (TTL, CMOS, and ECL)

' and you can also set a user-defined threshold value between

' -8.0 volts and +8.0 volts.

' In this example, we set channels 0-7 to CMOS, then set channels

' 8-15 to a user-defined 2.0 volts, and then set the external trigger

' to TTL. Of course, you only need to set the thresholds for the

' channels you will be using in your program.

NOTE

This command is only valid for the MSO models.

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