User’s Guide Supplement
Firmware Revisions 7.40 and Above
for the
HP 8719D/20D/22D,
HP 8753E, and HP 8753E Option 011
HP Part Number 08753-90445
Printed in USA October 1998
Notice.
The information contained in this document is subject to change without notice.
Hewlett-Packard makes no warranty of an y kind with re gard to this material, including b ut not limited to,
the implied warranties of merchantability and fitness for a particular purpose. Hewlett-Packard shall not
be liable for errors contained herein or for incidental or consequential damages in connection with the
furnishing, performance, or use of this material.
© Copyright Hewlett-Packard Company 1998
Contents
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Four-Parameter Display Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Four-Parameter Display and Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Enabling and Activating the Auxiliary Channels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Quick Four-Parameter Display Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Measurement Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Displaying All Four S-Parameters of a Two-Port Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Activate the Auxiliary Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Uncouple the Display Markers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Characterizing a Duplexer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Configuring Four-Parameter Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Adjusting the Position of Displayed Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Adjusting the Display Colors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Interaction between Display Softkeys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Markers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Rules Governing the Interaction between the Backspace Key, Markers, and the Softkey
Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
New Four-Parameter Display Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
New Remote Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
New Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Display Menu Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Preset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Saving Measurement Data to Disk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
ASCII Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Binary Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
New Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Softkey and Hardkey Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Display Colors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Changes to Menu Maps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Changes to the Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Status Reporting Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
iii
iv
Introduction
This document is intended for those who installed firmware upgrade 7.40 into their network analyzer.
This firmware upgrade gives your analyzer four-parameter display capability. With this upgrade, you
can measure and display all four S-parameters of a two-port device simultaneously. This firmware
upgrade also makes it easier to characterize duplexers using the HP 8753D Option K36 Duplexer Test
Adapter or similar adapter.
This supplement describes the new features of this firmware upgrade and how to use them. It is
assumed that you have a basic knowledge of the analyzer. Where appropriate, this supplement refers to
the analyzer’s User’s Guide when it will enhance your understanding of the features in this upgrade.
User’s Guide Supplement 08753-90445 1
Four-Parameter Display Overview
The four-parameter display firmware upgrade adds two channels to your analyzer. These new
channels, 3 and 4, make it possible to measure and display all four S-parameters of a device
simultaneously.
Although independent of the other channels in most respects, channels 3 and 4 are permanently
coupled to channels 1 and 2 respectively by stimulus. That is, if channel 1 is set for a center frequency
of 200 MHz and a span of 50 MHz, channel 3 will have the same stimulus values. This is a reciprocal
relationship in that changes made to channel 3’s stimulus immediately apply to channel 1. The
coupling between channels is:
Channel 1= channel 3 (by stimulus)
Channel 2 = channel 4 (by stimulus)
Channels 1 and 2 are referred to as the primary channels and channels 3 and 4 are referred to as the
auxiliary channels. Once channel 3 or 4 is made active, it can be configured independently of its
primary channel in these variables:
❏ Measurement (S-parameters only)
❏ Format
❏ Scale/Div
❏ Reference position
❏ Reference value
❏ Electrical delay
❏ Phase offset
❏ Memory trace storage
❏ Markers
❏ Limit lines
❏ Trace colors
2 User’s Guide Supplement 08753-90445
Four-Parameter Display and Calibration
SOFTKEY
AUXCHAN on OFF
ON
DUAL|QUAD SETUP
AUXCHAN on OFF
A full two-port calibration must be active before an auxiliary channel can be enabled. For the
measurement examples used in this supplement, a full two-port calibration covering the entire
frequency range of the analyzer was used. Interpolated error correction was then turned on to narrow
the calibration to the range of the DUT (Device Under Test).
The calibration may be recalled from a previously saved instrument state or performed before enabling
an auxiliary channel. If recalled, you may need to modify some of the parameters from the recalled
instrument state in order to test your particular device. The recalled calibration must cover the range
of the device to be tested.
Enabling and Activating the Auxiliary Channels
NOTE Hardkey and Softkey Representation:
Throughout this supplement, hardkeys are represented as and
softkeys are represented as .
The primary channel hardkeys and now activate auxiliary channels 3 and 4 as well
as primary channels 1 and 2. Before an auxiliary channel can be made active, it must be enabled by
setting to in the Display menu. Enabled and active are defined as:
Enabled: A channel must be enabled before it can be made active. Both primary channels are
always enabled. The auxiliary channels must be enabled via the Display menu before they
can be made active by the primary channel hardkeys or .
Active: When made active, a channel can be configured for measurement type, format, limit
lines, etc.
Auxiliary channel 3 or 4 is enabled by pressing or
Once the auxiliary channels are enabled, a hardkey will alternately make a primary channel or its
auxiliary channel active. The amber LED adjacent to the or hardkey indicates
which channel is active: when the LED is constantly lit, the primary channel is active; when it is
flashing, the auxiliary channel is active. Pressing a channel hardkey toggles between a primary
channel and its auxiliary channel.
Chan 1 Chan 2
Chan 1 Chan 2
Chan 1 Chan 2 Display
.
Chan 1 Chan 2
Hardkey
User’s Guide Supplement 08753-90445 3
Quick Four-Parameter Display Setup
4 PARAM DISPLAYS
DUAL|QUAD SETUP
DUAL CHAN on OFF
4 PARAM DISPLAYS
SETUP A
SETUP A
MEAS S11
AUXCHAN on OFF
SETUP A
SETUP A
4-PARAM DISPLAYS
To quickly set up a four-parameter display, you can use the 4-PARAMETER SHORTCUT KEYS menu to
set up a choice of common configurations. A full two-port calibration must be active before you can
enable the auxiliary channels.
To use the menu to quickly set up a four-parameter display, press:
Display
Pressing brings up a screen which color-codes each channel to the keys whic h affect it. F or
example, in , channel 1 is shown in yellow as well as the keys , , and
achieves the same results (four-parameter display) as pressing in the
TUTORIAL
Chan 1
. Pressing all of the keys listed below in order from top to bottom
menu.
Figure 1. 4 Param Displays Menu
4 User’s Guide Supplement 08753-90445
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