Rigol USB-GPIB Adapter Manual do Utilizador descarregar pdf (Página 4)

58 February 2013 ARRL, the national association for Amateur Radio

www.arrl.org

DX cluster network, and its database contains

the connection parameters for more than 300

Internet DX clusters. Connection parameters

can be customized to access new or private

clusters. Other features include automatic

cluster logon with optional password entry,

telnet access to the cluster console and the

ability to enter cluster commands. DxSpot

monitors DX spots in real time, creating

formatted table displays. Other displays

include colorized WWV propagation

data, users currently connected to the

cluster, and cluster announcements. The

app also provides automatic QRZ.com

web page search by DX, spotter or user

call signs. Another screen displays

detailed information about ARRL

DXCC entities, including name, prefix,

flag, continent, CQ/ITU zones, latitude/

longitude and UTC time offset. This

See the Digital Edition of QST for a video overview

of the Rigol DSA815-TG spectrum analyzer.

G. Steber, WB9LVI, “Experimenter’s RF

Spectrum Analyzer,” QST

, Oct 2008,

pp 36-40.

Table 3

Display Frequency Width versus

Resolution Bandwidth (RBW)

Sweep Width Minimum RBW (Hz)

(MHz) Rigol DSA815 HP 8563E

1000 1000 10,000

100 300 3000

10 100 1000

1 100 10

0.1 100 10

0.01 100 10

0.001 100 10

— the Rigol display froze up. The instru-

ment usually recovered from my demanding

requests within a few seconds, but once I

had to power down and power up again to let

it reboot.

Accessories

The DSA815-TG comes with a printed

Quick Guide and a CD-ROM with a more

detailed User’s Guide and Programming

Guide. You’ll need to supply cables and at-

tenuators suitable for the measurements you

want to make.

Rigol offers a number of optional accesso-

ries for the DSA815, including a USB to

GPIB converter, rack mount, carrying bag

and attenuator. Other options include a

VSWR measurement kit, an EMI/quasi peak

detector kit, and an advanced measurement

kit for evaluating parameters such as adja-

cent channel power, occupied bandwidth,

emission bandwidth, harmonic distortion

and third order IMD. A utility kit with a va-

riety of cables, adapters and antennas is

available as well.

One feature I would like to see is the option

to power the DSA815 from an internal re-

chargeable battery, a feature I’ve seen on

some other portable spectrum analyzers and

storage scopes. That would make this com-

pact unit even more attractive for measure-

ments in the field.

In Summary

A spectrum analyzer is a valuable tool for

anyone who enjoys building, modifying or

evaluating oscillators, amplifiers, filters,

transmitters and other RF equipment. In the

not too distant past, most spectrum analyzers

that amateurs could afford for home use

were old, surplus professional units that had

seen better days. Often they were long out of

calibration and difficult, if not impossible, to

repair if anything went wrong. More re-

cently, hams paired fairly simple hardware

with PC-based sound cards and software to

make RF spectrum analysis available at a

reasonable price.

The Rigol DSA815 takes

the next step, using DSP technology to make

an affordable, standalone, accurate test

instrument.

Overall, I was pleased with the DSA815-

TG’s performance and ease of operation. It

looks sharp, and its small size makes a great

addition to any test bench.

US Distributor: Rigol Technologies Inc.,

7401 First Place, Suite N, Oakwood Village,

OH 44146; www.rigolna.com; tel

877-474-4651; fax 440-232-4488.

New Products

DxSpot App for iPad, iPhone

and iPod Touch from Green

Creek Technology

DxSpot from Green Creek Technology is

available from the iTunes store for iPhone, iPad

and iPod touch (IOS 3.2 or later). This app

provides mobile access to the Amateur Radio

application is for licensed Amateur Radio

operators and a valid call sign is required for

use. Price: $3.99 from the iTunes app store.

For more information, visit www.greencreek

technology.com.

High Power VHF/UHF Ampliers from

Lunar-Link International

The Lunar-Link amplifier business has been

acquired from the estate of the late Steve

Powlishen, K1FO, by Louis Parascondola,

W1QJ, and Steve Simons, W1SMS. Lunar-

Link International will offer legal limit output

VHF/UHF linear amplifiers, accessories,

technical support, repairs and replacement

parts. These amplifiers and accessories are

intended for use in demanding applications

including EME, contesting and digital modes.

Deliveries were expected to begin in the first

quarter of 2013. For more information, or to

order, visit www.lunarlink.com.

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