User Manual

Command Descriptions

Returns

Oscilloscope v

ertical settings.

Examples

CH1? might return the following string for channel 1: CH1:SCALE

1.0E0;POSIT

ION 0.0E 0; COUPLING DC;BANDWIDTH OFF;PROBE 1.0E0

CH<x>:BANdwidth

Sets or queries the bandwidth setting of the speciﬁed oscilloscope channel. The

value of <x> can vary from 1 through 4 for 4-channel instruments or 1 through

2 for 2-channel instruments.

This command is equivalent to setting the BW Limit option in the Vertical menu.

Group

Vertica

Syntax

CH<x>:BANdwidth { ON | OFF }

CH<x>:BANdwidth?

Arguments

ON sets the c hannel bandwidth to 20 MHz.

OFF sets the channel bandwidth to the full bandwidth of the osci

lloscope.

In most acquisition modes, full bandwidth is 60 MHz, 100 MHz, or 200 MHz

(depending on the oscilloscope model). There are exceptions:

For TDS1000, TDS2000, TDS1000B, TDS2000B, TDS2000C, and TPS2000

Series: At vertical scales from 2.00 to 4.99 mV/div (sensitivity at the BNC;

that is, after the probe factor is removed), the full bandwidth is 20 MHz.

For TDS200 Series: At vertical scales of 5 mV/div or less (sensitivity at the

BNC; that is, after the probe factor is removed), the full bandwidth is 20 MHz.

When the acquisition mode is Peak Detect, and the v ertical scale at the BNC

is 10 mV/div or less, the full bandwidth is also 20 MHz.

Examples

CH2:BANDWIDTH ON sets the bandwidth of channel 2 to 20 MHz.

CH1:BANDWIDTH? might return OFF. This indicates there is n o bandwidth

limiting on channel 1.

CH<x>:COUPling

Sets or queries the input attenuator coupling setting of the speciﬁed oscilloscope

channel. The value of <x> can vary from 1 through 4 for 4-channel instruments or

1 through 2 for 2-channel instruments.

2-44 TDS200, TDS1000/2000, TDS1000B/2000B, TDS2000C, TPS2000 Programmer