Jensen Transformers PO-2XX Data Sheet

Jensen...The Worlds Finest Audio Transformers

Connector options

Dimensions

PO-2XX Two channel output ground isolator

• Drives balanced and unbalanced signals long distances

• Eliminates hum and buzz caused by ground loops

• Withstands input levels in excess of +26 dB at 30 Hz

• Plug & play easy to use, no power required

The Iso•Max PO-2XX is a two-channel line output isolator for both balanced
and unbalanced signals where extreme signal handling is required to drive
long cable runs.

The design begins with a rugged anged enclosure that comes standard
with gold plated XLRs and a removable screw-down barrier strip for easy in­stallation in NEMA enclosures. Plug and play easy to use, this passive inter­face does not require any power to work. Inside are two high performance
nickel core Jensen transformers that are able to withstand signals in excess
of +26 dB without discernible distortion while delivering a linear response
to 150 kHz. This provides galvanic isolation between the input and output
to eliminate hum and buzz caused by ground loops, rejecting noise by as
much as 110 dB. To further optimize the performance, a bottom mounted
eight position ‘set & forget’ dip switch enables the user to congure the PO­2XX grounding scheme as needed.

PO-2XX

( FRONT )

( BOTTOM )

( TOP )

( REAR )

CH 1

IN

INTERNAL SCHEMATIC

ON THIS LABEL

1.25”

(31.8mm)

REMOVABLE BARRIER STRIP

CH 2

JENSEN TRANSFORMERS, INC.

OUT

(176.3mm)

18

(165.1mm)

INOUT

IN

6.94”

6.50”

CH 1

CH 2

INOUT

OUT

3.00”

(76.2mm)

.695”

(17.6mm)

3.50”

(88.9mm)

1.71”

(43.4mm)

Made to accommodate both balanced or unbalanced signals, simply con­nect the PO-2XX anywhere you like between the source and destination
and the PO-2XX will quietly go to work as it delivers exceptional audio while
eliminating ground loops and electromagnetic interference (EMI). This
makes the Iso•Max PO-2XX a superb choice for the most demanding studio,
broadcast and performance venue installations.

Applications

LONG CABLE

PO-2XX with a PA system

Eliminating noise in a PA system can
sometimes take hours of trouble shoot­ing, particularly when the mixer, ampliers
and speakers are distanced apart. Simply
connect the PO-2XX at the output of your
mixer to instantly eliminate hum and buzz
caused by ground loops.

Isolating one console from the other

Whether you are isolating two consoles
in a festival or experiencing noise when
connecting to a drive rack, the PO-2XX
is easily inserted into the signal chain
to break the ground loop and eliminate
noise as it easily handles huge bass
transients without distortion.

The PO-2XX comes standard with XLR inputs and
outputs. It is also available special order with the
following connector congurations for use with both
balanced and unbalanced systems.

PO - 2XX

XLR-F IN, XLR-M OUT XLR-F IN, BNC OUT

PO - 2XN

XLR-F IN, WIRE LEAD OUT XLR-F IN, 1/4” TRS OUT

PO - 2XR

XLR-F IN, RCA OUT 1/4” TRS IN / OUT

PO - 2NN

WIRE LEAD IN / OUT RCA IN, WIRE LEAD OUT

PO - 2RR

RCA IN / OUT RCA IN, XLR-M OUT

PO - 2XB

PO - 2XP

PO - 2PP

PO - 2RN

PO - 2RX

Jensen Transformers Inc., 9304 Deering Ave. Chatsworth, CA 91311
P: [phone] F: [phone] [e-mail]

jensen-transformers.com

Jensen...The Worlds Finest Audio Transformers

PO-2XX

THD at FIXED INPUT LEVELS, Rs=0

THD+N (%) vs FREQUENCY (Hz) 20 Hz DISTORTION AT FIXED Rs

THD+N (%) vs OUTPUT LEVEL (dBU)

1.01.0

+23 dBu

0.1

0.1

600 Ω

150 Ω

0.01

+14 dBu

0.01

0 Ω

+4 dBu

0.001

200 2K 20K

0.001

-40 -30 -20 -10 -0 +10 +20 +3020

REFERENCE LEVEL RESPONSE AMPLITUDE (dB) vs FREQUENCY (Hz) DEVIATION (Deg) vs FREQUENCY (Hz)DEVIATION FROM LINEAR PHASE

+1

REF

+5

+4

+3

-1

-2

+2

+1

0

-3

-4

-5

Low frequency data
augmented with use of
Hewlett-Packard 332A
Frequency Synthesizer

-6

20m 200m 2 2020 200200 2K2k 20K

PARAMETER CONDITIONS MINIMUM TYPICAL MAXIMUM

Input impedance, Zi

Voltage gain 1 kHz, 0 dBu, test circuit 1, Rs = 0 Ω

Magnitude response, ref 1 kHz

Deviation from linear phase (DLP) 20 Hz to 20 kHz, 0 dBu, test circuit 1, Rs = 0 Ω +0.3 / -0° ±1.0°

Distortion (THD)

Maximum output level

Common - mode rejection ratio (CMRR)

Recommended source impedance output impedance of device connected the ISO-MAX input 0 600 Ω 2 kΩ

Recommended load impedance input impedance of device connected the ISO-MAX output 150 Ω 20 kΩ

Output impedance, Zo 20 Hz to 20 kHz, 0dBu, test circuit 4 80 Ω

Optimal cable length (balanced)

Optimal cable length (unbalanced)

Temperature range operation or storage 0°C 70°C

Input to Output Voltage Difference* any input to any output shield or any shield to case, 60 Hz

All levels are output unless noted

* IMPORTANT NOTE: THIS PRODUCT IS NOT INTENDED FOR USE IN CIRCUMSTANCES WHERE THE DC OR PEAK AC VOLTAGE
BETWEEN INPUT AND OUTPUT CONNECTIONS EXCEEDS 34 VOLTS OR WHERE ITS FAILURE COULD CAUSE INJURY OR DEATH.

20 Hz to 20 kHz, 0 dBu, test circuit 3, RL = 600 Ω 670 Ω 680 Ω 690 Ω

1 kHz, 0 dBu, test circuit 3, R

20 Hz, 0 dBu, test circuit 1, Rs = 0 Ω -0.1 dB -0.02 dB ±0.0 dB

20 kHz, 0 dBu, test circuit 1, Rs = 0 Ω -0.1 dB ±0.0 dB +0.1 dB

1 kHz, +4 dBu, test circuit 1, Rs = 0 Ω <0.001%

20 Hz, +4 dBu, test circuit 1, Rs = 0 Ω 0.004% 0.03%

20 Hz, 1% THD, test circuit 1, Rs = 0 Ω +20 dBu +22 dBu

60 Hz, test circuit 2 110 dB

3 kHz, test circuit 2 75 dB 85 dB

input 50 m (150’) 200 m (600’)

output 100 m (300’) 300 m (1000’)

input 8 m (25’) 15 m (50’)

output No limitations

20K 200K

= 20 kΩ

L

-1

-2

-3

-4

-5

-1.2 dB

-1.1 dB -0.9 dB

24 V RMS
34 V peak

Test Circuit 1:

Test Circuit 2:

Test Circuit 3:

All minimum and maximum specica­tions are guaranteed. Unless noted
otherwise, all specications apply at
25

°C. Specications subject to change

without notice. All information herein
is believed to be accurate and reliable,
however no responsibility is assumed
for its use nor for any infringements of
patents which may result from its use.
No license is granted by implication or
otherwise under any patent or patent

rights of Jensen Transformers, Inc.

Jensen Transformers Inc., 9304 Deering Ave. Chatsworth, CA 91311
P: [phone] F: [phone] [e-mail]

jensen-transformers.com