Radial Engineering J-Iso Manual

Radial Engineering Ikke kategoriseret J-Iso

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Side 1/2

SPECIFICATIONS

ProISO J•ISO

Freq. response 20Hz to 18kHz +/- 1dB 10Hz to 50kHz +/- 1dB

THD @ 1k 0.01% 0.001%

Stereo Inputs Balanced, low-Z, +4dB line-level, 600-Ohm,

female XLR, pin-2 hot

Outputs Unbalanced, high-Z, -10dB line-level

RCA, ¼”, and 3.5mm TRS

Power None, completely passive

Size 3.25” x 5” x 1.875”

Weight 2 lbs.

INPUT PANEL

2. Ground lift disconnects the

signal ground to eliminate buzz and

hum caused by ground loops.

1. XLR INPUT for balanced,

low-impednce, +4dB line-level

signals.

3. Secondary Ground Lift used

for instances where two separate

devices are connected to the

outputs.

OUTPUT PANEL

4. Output Level provides signal

attenuation to prevent clipping.

5. 3.5mm TRS output connection

for stereo -10dB consumer audio

devices like the iPOD.

6. RCA Phono left and right stereo

outputs for -10dB consumer audio

electronics.

7. ¼” Phone left and right stereo

outputs for high-impedance audio

electronics like mixers.

CONSTRUCTION

8. Bookend design 14 gauge steel

outer shell creates protective zone

around connectors and switches.

9. I-beam enclosure eliminates

stress that could torque the PC

board and cause solder joint

failure.

10. PCB mounted switches are

high-cycle rated for long life.

11. Jensen Radial (J•ISO) and

(ProISO) tr an sfo rme rs offe r

outstanding audio performance.

12. Military-grade double-sided

PCB with plated through-holes is

bolted to welded steel standoffs.

13. Full-bottom no-slip pad This

provides electrical isolation and

plenty of "stay-put" friction.

www.radialeng.com

Radial Engineering

1638 Kebet Way, Port Coquitlam BC V3C 5W9

Tel: 604-942-1001 Fax: 604-942-1010

email: info@radialeng.com

J•ISO

Pro-ISO

Users Guide

True to the Music

Radial J•ISO and ProISO users guide V1.0 - Part #: R870 1220 00

Subject to change without notice

RADIAL ENGINEERING 3 YEAR LIMITED WARRANTY

RADIAL ENGINEERING LTD. (“Radial”) warrants this product to be free from

defects in material and workmanship and will remedy any such defects free of

charge according to the terms of this warranty. Radial will repair or replace (at

its option) any defective component(s) of this product (excluding ﬁ nish and wear

and tear on components under normal use) for a period of three (3) years from

the original date of purchase. In the event that a particular product is no longer

available, Radial reserves the right to replace the product with a similar product of

equal or greater value. To make a request or claim under this limited warranty, the

product must be returned prepaid in the original shipping container (or equivalent)

to Radial or to an authorized Radial repair center and you must assume the risk

of loss or damage. A copy of the original invoice showing date of purchase and

the dealer name must accompany any request for work to be performed under

this limited warranty. This limited warranty shall not apply if the product has been

damaged due to abuse, misuse, misapplication, accident or as a result of service

or modiﬁ cation by any other than an authorized Radial repair center.

THERE ARE NO EXPRESSED WARRANTIES OTHER THAN THOSE ON THE

FACE HEREOF AND DESCRIBED ABOVE. NO WARRANTIES WHETHER

EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED

WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR

PURPOSE SHALL EXTEND BEYOND THE RESPECTIVE WARRANTY PERIOD

DESCRIBED ABOVE OF THREE YEARS. RADIAL SHALL NOT BE RESPON-

SIBLE OR LIABLE FOR ANY SPECIAL, INCIDENTAL OR CONSEQUENTIAL

DAMAGES OR LOSS ARISING FROM THE USE OF THIS PRODUCT. THIS

WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU MAY ALSO

HAVE OTHER RIGHTS, WHICH MAY VARY DEPENDING ON WHERE YOU

LIVE AND WHERE THE PRODUCT WAS PURCHASED.

1 2 3

+4dB Balanced to -10dB Unbalanced

Stereo Signal Conversion Tool

J•ISO ProISO User GuideRadial Engineering Ltd. J•ISO ProISO User GuideRadial Engineering Ltd.

11 12 13

9 10

87654

J-RAK AND J-CLAMP

The optional J-RAK is a high density

rackshelf for Radial DI’s and splitters.

It’s a 2RU rack chassis that allows up to

8 Radial devices in one neat high density

19” package. The DI’s can be mounted

with either the input side or output side

facing the front. Ideal for studio or touring.

Constructed of 14 gauge steel with a baked

enamel ﬁ nish.

The optional J-CLAMP can mount a single

Radial device to virtually any surface.

Perfect for hiding away inside racks, on

podiums or under tables. Constructed of 14

gauge steel with a baked enamel ﬁ nish.

CONGRATULATIONS on your purchase of the Radial J•ISO or ProISO pas-

sive signal conversion tools. As with all Radial products the J•ISO and ProISO

are easy to use and ensure the best audio quality. This short manual contains

all the information you need to start using the tools right away. For more infor-

mation on the J•ISO, ProISO and other Radial products, visit our web site at

www.radialeng.com. The Radial J•ISO and ProISO are thoughtfully designed

and useful devices that will provide you with years of reliable service. Enjoy!

INTRODUCTION

The Radial J•ISO and ProISO are two channel line-level signal conversion tools

with transformer isolation to prevent noise from ground loops. Both units are

identical except for the audio transformers. The J•ISO features two premium

Jensen audio transformers. The ProISO uses high quality Radial transformers.

Both units convert +4dB balanced signals to -10dB unbalanced with optimum

signal-to-noise and signal transfer quality.

These devices allow you to connect professional balanced audio gear to con-

sumer unbalanced. In addition to standard RCA stereo outputs, both units are

equipped with ¼” instrument and 3.5mm jacks, allowing virtually any -10dB audio

device (such as computer sound cards) to be connected without adapters.

For instance, the J•ISO and ProISO are great tools to interface a pro mixing

console or high-end microphone preamp with your iPod to make a recording

of the house mix.

A major beneﬁ t of using transformers is the elimination of noise caused by ground

loops. The transformer isolates the devices connected to it by decoupling the

signal ground between the input and output. This isolation effectively breaks

ground loops between devices and blocks hum and buzz.

GROUND LIFT

To make grounding as ﬂ exible as possible, both units feature a ground LIFT

switch. When in the lifted position, the input signal ground is decoupled through

the audio transformer and isolated from the output signal ground. If you hear

hum or buzz, try depressing the LIFT switch and use the position that produces

the least noise.

LEVEL CONTROL

The J•ISO and ProISO feature a variable audio level control that can be called

upon to attenuate hot signals and prevent the destination audio device from

clipping.

RCA & 3.5mm JACKS

Consumer audio electronics such as CD players, computer sound cards and

MP3 players connect directly using the 3.5mm and RCA inputs, thus eliminating

the need for cumbersome adaptors. Two ¼” phone jacks are also provided. All

output jacks are wired in parallel and can be used to split the stereo signal and

send it to a second audio device. You can connect a laptop to the RCA outputs

and an MP3 player to the 3.5mm phone jack and record the signal on both.

Keep in mind that the source audio level may need to be increased to drive the

additional load that a second device presents.

J•ISO ProISO User GuideRadial Engineering Ltd.

USING THE ProISO

All Radial Engineering products are designed for simple, straight-forward use.

However, attention taken during set-up will ensure success. Before connecting

ensure the sound system is turned off and all levels are set to zero. This will

avoid any pops in the sound system that could cause damage to speakers,

headphones or your ears.

Conﬁ rm the recessed LEVEL control is set at its maximum clockwise position

and the LIFT switch is pushed inward. The ProISO is completely passive and

does not require a power supply of any kind to operate.

1. Connect the balanced +4dB audio source to the XLR inputs using balanced

cables.

2. Use unbalanced cables to connect the outputs to the destination audio de-

vice. Unbalanced cables should be kept under 20 feet in length to maintain

the best ﬁ delity.

3. To conﬁ rm audio quality, you should monitor the destination audio device with

a set of headphones or a stereo loudspeaker system.

SECONDARY GROUND LIFT

A secondary recessed ground lift switch is accessed through a small hole in the

side of the enclosure. This switch disconnects the common ground connection

between the left and right output jacks. For normal stereo operation with one

audio device connected to the outputs, this switch can be set either open (pushed

“out”) or closed (pushed “in”).

However, if you intend to connect a second device or use the J•ISO in dual

mono mode (where the left and right output channels drive two separate audio

devices) there may be a gain in noise performance by depressing this switch. If

you hear hum or buzz while operating with two devices connected, try toggling

the recessed switch and use the setting that produces the least noise.

The J•ISO and ProISO do not require any power to operate. They are extremely

portable and plug-and-play easy to use. The circuit is 100% passive and will

not add any noise to the signal. The rugged construction is compact enough to

take anywhere and dependable for service out on the road.

XLR INPUTS

These inputs are intended for professional audio equipment with a balanced

+4dB line output. The ProISO uses the AES standard XLR pin-out where PIN-2

is hot (+) and PIN-3 cold (-).

AUDIO TRANSFORMERS

A pair of audio transformers converts the low-impedance balanced +4dB source

signal into a high-impedance, unbalanced output. Jensen and Radial transform-

ers are exceptional for their linear frequency response and ability to handle high

input levels without distortion.

4. Turn the source audio level up slowly and listen for noise. In the event you

encounter hum or buzz, simply depress the ground lift switch.

5. Bring the source audio up to unity-gain. If the sound is distorted (clipping) turn

the LEVEL control down. You are now set to go!

+4dB Balanced -10dB Unbalanced

J•ISO ProISO User GuideRadial Engineering Ltd. J•ISO ProISO User GuideRadial Engineering Ltd.

Produkt Specifikationer

Mærke:	Radial Engineering
Kategori:	Ikke kategoriseret
Model:	J-Iso

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