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HP 54754A TDR/TDT Setup Menu

TDR rate automatic . . . (250 kHz)

5-21

for normalization and reference plane calculations can be stored to and re-

loaded from disk. (See the

Disk Menu

chapter in the HP 83480A, HP 54750

User’s Guide for more information.)

The reference plane must be established before ohm, % reflect or gain units are

selectable for the channel. Also, the

Reference

ref plane function is not

available in the Marker menu.

The function steps you through the normalization and reference plane

procedure for the selected measurement type. The procedure steps are

displayed at the top of the screen. The items required for calibration are shown

in Table 5-6.

Table 5-6

Establish normalization & ref plane Hardware Requirements

Key Path TDR/TDT Setup

Normalize response . . . Establish normalization & ref plane . . .

TDR rate automatic . . . (250 kHz)

The

TDR rate automatic . . . (250 kHz)

function allows you to manually or

automatically select the repetition rate of the TDR step. The range of values

for manual mode selection are from 50 Hz to 250 kHz repetition rate using a

1-2-5 sequence. When this function is set to automatic, the TDR step repetition

The normalization filter values and reference plane are invalidate when the

timebase scale, record length or channel bandwidth is changed. Also, the

normalization process will not be able to remove small synchronous noise in the

channels baseline if the timebase position is changed. For most measurements

this error is very small..

Measurement Requirements

TDR 50 ohm 3.5 mm SMA terminator

3.5 mm SMA short

TDT 1 or 2 each 3.5 mm SMA cables

3.5 mm barrel connector

HP 54753A User Manual

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