Keysight HSA N9342C Manual de usuario

Demonstration Guide

Keysight Technologies

N9342C/N9343C/N9344C HSA

Handheld Spectrum Analyzer

Introduction ............................................................................................................................. 3

Demonstration Preparation..................................................................................................... 4

Panel Tour

Front panel....................................................................................................................... 5

Top panel.......................................................................................................................... 6

Demonstrations

Auto-brightness and back-lit keys.................................................................................. 7

Measurement basics: frequency, span, amplitude......................................................... 8

Save, recall, and the unique User key............................................................................. 9

GPS................................................................................................................................... 10

Task planner..................................................................................................................... 11

Spectrum monitoring and interference hunting............................................................. 17

Remote control via LAN or USB port .............................................................................. 18

Marker, marker table, and peak table............................................................................. 18

Advance marker functions............................................................................................... 19

Limit lines and limit masks .............................................................................................. 20

Multiple traces and simultaneous detectors .................................................................. 21

Trace math functions....................................................................................................... 22

Tracking generator........................................................................................................... 23

Power meter..................................................................................................................... 24

Table of Contents

This demonstration guide shows you how to use the basic functions of the N9342C/43C/44C

handheld spectrum analyzers (HSAs) and take advantage of their extensive features. The

demonstrations apply to all of the HSA models, which are collectively referred to as N934xC HSAs in

this document.

Demonstrated features include:

– Panel tour

– Auto-brightness and back-lit keys

– Save, recall, and the unique User key

– GPS

– Task planner

– Spectrum monitoring and interference hunting

– Remote control via LAN or USB port

– Marker, marker table, and peak table

– Advanced marker functions

– Limit lines and limit masks

– Multiple traces and simultaneous detectors

– Trace math functions

– Tracking generator

– Power meter

Introduction

04 | Keysight | N9342C/N9343C/N9344C HSA Handheld Spectrum Analyzer - Demonstration Guide

Figure 1. Instrument connection

Model no. Product type Options

E4438C-503 ESG vector signal generator 400

602

N934xC Handheld spectrum analyzer N9342C-PA7

N9343C-P13

N9344C-P20

N934xC-PWM

N934xC-SIM

N934xC-TG7

N934xC-GPS

N934xC-GPA

N934xC-TPN

An AM/FM antenna

An Omni antenna (which is used to receive

over-the-air signals)

A bandpass lter

Demonstration Preparation

This demonstration provides the step-by step instructions for using the extensive

features of N934xC HSAs.

All demonstration key strokes surrounded by [ ] indicate front panel hard keys and key

strokes surrounded by { } indicate soft keys on the right edge of the display.

Instructions between E4438C and N934xC HSAs

– Connect the 10 MHz out of E4438C to the Ext Trig/Ext Ref of the HSA

– Press N934xC HSA’s [Shift], [System], {More 1 of 2}, {Port Setting}, {Ext Input (Ref)}

– Connect the RF out of the E4438C to RF In of the N934xC HSA

– Power on both the E4438C and HSA

05 | Keysight | N9342C/N9343C/N9344C HSA Handheld Spectrum Analyzer - Demonstration Guide

No. Caption Function

1Power switch Toggles the analyzer between on and off

2 Function keys Includes function hard keys for measurements

3Preset Returns the analyzer to a known state, also On/Off power save features (press and hold for 1 sec)

4 Shift Switches alternate upper function of the function keys and [Peak/Marker]

5Enter Conrms a parameter selection or conguration

6Peak/Marker Activates the peak search or marker function

7ESC/Bksp Exits and closes the dialog box or clears the character input as a back space key

8 Alphanumeric keys Includes a positive/negative, a decimal point, and ten alphanumeric keys

9 Arrow keys Increases or decreases a parameter step by step

10 Knob Selects an option item or edits a numerical parameter

11 Softkeys Indicates current menu functions on the screen

12 Speaker Actives in demodulation mode

13 Light sensor Adjust the brightness automatically

14 Screen Displays spectrum traces and status information

Panel Tour

Front panel

12 11

54321

1314

06 | Keysight | N9342C/N9343C/N9344C HSA Handheld Spectrum Analyzer - Demonstration Guide

No. Caption Function

1 External DC power connector Provides input for the DC power source via an AC-DC adapter, or automotive type DC adapter

2 LED indictor (charging) Lights (On) when the battery is charging

3 LED indictor Lights (On) when external DC power is connected

4USB interface (device) Connects to a PC

5 USB interface (host) Connects to a USB memory stick or disk

6Headphone Connects to a headphone

7 LAN interface (option) Connects to a PC for SCPI remote control

8 RF OUT connector The output for built-in tracking generator (enabled with Option TG7)

9Probe power Provides power for high-impedance AC probes or other accessories (+15 V, -12 V, 150 mA maximum)

10 EXT TRIG IN/REF IN (BNC,

female)

Connects to an external TTL signal or a 10-Hz reference signal. The TTL signal is used to trigger the analyzer’s

internal sweep

11 GPS antenna connector Connects to an external GPS antenna for GPS application

12 RF IN connector (50 Ω) Accepts an external input with a frequency range from 100 kHz to 7 GHz, tunable to 9 kHz

Panel Tour (continued)

Top panel

54321 6 7

89101112

07 | Keysight | N9342C/N9343C/N9344C HSA Handheld Spectrum Analyzer - Demonstration Guide

Communication system maintenance and repair often require a technician to trouble-

shoot in bright daylight or in the darkness of night. The light sensor on the front panel of

the N934xC HSA senses the ambient light and automatically adjusts the brightness of

the display and the back-lit keys.

The user can also manually set the brightness of the display, and the brightness of the

back-lit keys, so they can be seen clearly even in any light. The duration of the key light is

settable to provide maximum battery life.

1.1 Adjust the display brightness

Instructions for HSA Keystrokes for HSA

Switch the screen brightness state from automatic to manual [Shift], [System], {Screen Setting}, {Brightness (Man)}

Rotate the knob to adjust the display brightness

Switch the screen brightness state back to automatic {Brightness (Auto)}

Cover the light sensor with your nger and watch as the display bright-

ness adjusts automatically

1.2 Back-lit key demo

Instructions for HSA Keystrokes for HSA

Turn on key backlight [Shift], [System], {Keypad Setting}, {Backlight Brightness}, {Auto}

Adjust backlight ash time to 5, 10, 15, 30 seconds, or “always on” {Backlight off}, {15 s}

Demonstration 1

Auto-brightness and back-lit keys

08 | Keysight | N9342C/N9343C/N9344C HSA Handheld Spectrum Analyzer - Demonstration Guide

The key measurement setup parameters of a spectrum analyzer are:

– Frequency

Adjust the frequency range measured

– Span

Adjust how closely you look at the signal

– Amplitude

Adjust the view of the signal’s level

A typical spectrum analyzer measurement procedure contains the following three steps:

1. Tune the center frequency of the analyzer to the signal of interest.

2. Adjust the span to zoom in on the signal of interest.

3. Adjust the amplitude to give the optimum view of the signal.

In this demonstration, we will set signal generator to output a signal to N934xC HSA with

an RF cable and set these parameters.

Instructions for the source Keystrokes for the source

Set 2 GHz center frequency, amplitude -10 dBm, CW signal [Preset], [FREQ], [2], {GHz}, [AMPTD], [-10], {dBm}, [RF On]

Instructions for HSA Keystrokes for HSA

Tune the center frequency to 2 GHz [Freq], [2], {GHz}

Adjust span so signal lls the screen [Span], [10], {MHz}

Set reference level to

-10 dBm so that the signal peak is at the top of graticule line (Figure 2)

[Amptd], {Ref Level}, [-10], {dBm}

Figure 2. Adjust reference level

Demonstration 2

Measurement basics: frequency, span, amplitude

09 | Keysight | N9342C/N9343C/N9344C HSA Handheld Spectrum Analyzer - Demonstration Guide

Demonstration 3

Save, recall, and the unique User key

Instructions for the source Keystrokes for the source

Set 2-GHz center frequency, amplitude -10 dBm, W-CDMA signal [Preset], [Freq], [2], {GHz}, [Amplitude], [-10], {dBm}, [Mode], {W-CDMA}, {Arb

W-CDMA (3GPP 12-2004}, {W-CDMA (On)}, [Mod On], [RF On]

Instructions for HSA Keystrokes for HSA

Preset N934xC HSA [Preset]

Select internal C:/USER/STATE folder

Note: For the user key feature, the STA le must be placed under the

USER/STATE directory

[Shift], [File], rotate the knob to select the USER folder, [Enter], rotate the

knob to select the STATE folder, [Enter], {Return}

You may have to create the USER and STATE directory folders [Shift], [File], {Directory}, {Create Folder}

Set QSave le type [Shift], [File], {Setup}, {QSave Type}, {STA}

Turn on QSave naming {QSave Naming (On)}, {Return}

Set center frequency and span [Freq], {Center Freq}, [2], {GHz}, [Span], [10], {MHz}

Turn on channel power [Meas], {Channel Power}

Set integrated BW {Integrated BW}, [5], {MHz}

Save le [Shift], [Save], input the le name [WCDMA_CHP] in the “Save As” dialog box

and press [Enter]

Turn on OBW [Meas], [Meas], {Occupied BW}

Save le [Shift], [Save], input the le name [WCDMA_OBW] in the “Save As” dialog box,

[Enter]

Preset N934xC HSA [Preset]

Use the User key

(As shown in Figure 17, channel power and OBW’s state le name appears

on the soft key button)

[Shift], [User]

Make measurement with User key

Channel power {WCDMA_CHP}

OBW [Shift], [User], {WCDMA_OBW}

Figure 3. USER key

The N934xC HSAs let you save the state, trace data, measurement

results (peak and marker table), limit lines, and screen captures to an

internal le, a USB drive, or remotely via LAN or USB.

The N934xC HSAs provide a dedicated Save button to let you save a

le quickly with a single button press. When the Save button is used,

you can choose to name the le by yourself, or let the HSA automati-

cally pick a le name that consists of a prex (N934xC is the default

but can be edited) and a index.

Another unique feature on the N934xC HSAs is the User key, which

provides a quick way to set up the instrument. You can select from

7 predened instrument setups with a single button push.

10 | Keysight | N9342C/N9343C/N9344C HSA Handheld Spectrum Analyzer - Demonstration Guide

Figure 4. GPS information

Instructions for HSA Keystrokes for HSA

In order to receive a GPS signal, you need to move to an open space to

use the internal GPS antenna, or connect an external GPS antenna (option

GPA) to the HSA and make sure the head of the external GPS antenna is in

an open space.

Turn on GPS [Shift], [System], {More 1 of 2}, {GPS}, {GPS, (On)}

A icon will appear at the top of the display after successful lock of GPS

satellites

Turn on GPS information on the display {GPS Info, (On)}

Location information from GPS displays on the right of icon (Figure 3)

Note: The N934xC must have an unobstructed view of the sky in order to lock onto GPS satellites.

The HSA has a built-in GPS receiver and antenna (Option GPS). In addition to the internal

antenna, the HSA also supports the external GPS antenna (Option GPA), providing

convenience in the eld. You can save measurement results with GPS location data

(latitude, longitude, and altitude).

In this demonstration, we will show how to use the N934xC HSA`s GPS feature.

Demonstration 4

GPS

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