Z-BLOCKER® Z-D250P2J
xDSL/POTS CPE Dual In-Line Filter
Description
The Z-D250P2J is a small, in-line customer
premises equipment (CPE) filter designed to
expedite the service delivery and improve the
performance of digital subscriber line (DSL)
and home phoneline network (HPN) services
over plain ordinary telephone service (POTS).
The Z-D250P2J filters all telephones, facsimile
(fax) machines, answering machines, and other
telephone equipment. Its filter design electroni-
cally isolates the high-speed DSL and HPN data
streams from the voice-band POTS to provide
premium voice quality and optimal DSL and
HPN data rates.
The Z-D250P2J filters both line 1 and line 2 at a
two-line jack to reduce crosstalk that can occur
between lines.
Z-D250P2J xDSL/POTS CPE Dual In-Line Filter
Applications
The DSL user installs the Z-D250P2J in-line filter
into each telephone line jack in the subscribers’
premises that contains voice-band equipment
devices, including corded/cordless telephones,
answering machines, fax machines, 56Kb/s and
lower rate modems, automatic dialers, recorder
connectors and satellite television set-top boxes.
The Z-D250P2J in-line filter is one of many filters
manufactured by Excelsus for subscriber installed
digital services within homes, offices, and hotels.
Excelsus is the number one selling brand of DSL
filters worldwide.
RJ11-JACK
LINE 1
RJ11-PLUG
6
5
LINE 4
3
2
1
6
5
4
3
2
1
LINE 2
RJ11-JACK
6
5
4
3 DSL
2
1
Features
● Isolate telephone equipment impedances from
the xDSL and HPN systems
● Blocks xDSL and HPN signals from voice-
band equipment up to 30 Megahertz
● Filters both lines at a two-line jack
● Provides a convenient DSL/HPN jack for easy
broadband access
● Compatible with all major xDSL standards
including ADSL Full Rate (ITU-T G.992.1),
ADSL G.Lite (ITU-T G.992.2), ADSL2 (ITU-
T G.992.3 and .4), ADSL2+ (ITU-T G.992.5
in analog mode), ADSL2++, VDSL (ITU-T
G.993.1), VDSL2; also V.90 and Metallic Loop
Testing compatible
● Compliant and listed with UL / CSA 60950,
FCC CFR 47 Part 68, and IC CS-03
www.pulseeng.com
PHONE
Z-D250P2J block schematic
EX128.A (9/09)
Z-BLOCKER® Z-D250P2J
xDSL/POTS CPE Dual In-Line Filter
Z-BLOCKER Z-D250P2J Filter Specifications
Capacitance to Ground
<0.2nF
DC Resistance
Network port at 20mA
<20 Ω
>500 MΩ
Tip and Ring to Ground at
≤
100 Vdc
>500 MΩ
Tip and Ring to Ground at
≥
100 Vdc and
≤
200 Vdc
Operating Current
5 to 90 mA
Operating Voltages
Network tip to ring
0 to -100 Vdc
Network ringing signals at 30 to 115 Vrms
–100 to +100 Vdc
On-hook Voice Band Insertion Loss at 1004Hz
With 1 filter
-0.5dB to 2.2dB
With 3 filters
-1.0dB to 6.5dB
With 5 filters
-1.0dB to 6.5dB
On- or Off-hook Envelope Delay 300 Hz - 2800 Hz
<250μs
Off-hook Voice Band Insertion Loss at 1004Hz
With 1 filter
-0.5dB to 0.5dB
With 3 filters
-1.0dB to 1.0dB
With 5 filters
-1.0dB to 1.0dB
Off-hook Voice Band Insertion Loss Distortion
With 1 filter, 200 to 3400 Hz
-1.0dB to 0.5dB
With 3 filters, 200 to 3400 Hz
-1.5dB to 2.5dB
With 5 filters, 200 to 3400 Hz
-1.5dB to 2.5dB
With 1 filter, 3.4 to 4 kHz
-1.5dB to 1.0dB
With 3 filters, 3.4 to 4 kHz
-2.0dB to 3.5dB
With 5 filters, 3.4 to 4 kHz
-2.0dB to 3.5dB
Off-hook impedance distortion (5 filters)
Phone Port
SRL Low
≥13
dB
“
ERL
≥6.5
dB
“
SRL High
≥1
dB
Network Port
SRL Low
≥12
dB
“
ERL
≥10
dB
“
SRL High
≥5
dB
Inter-Modulation Distortion Second and Third order products
≥57
dB and
≥60
dB,respectively
Off-hook High Band Stopband Attenuation (1 filter)
25 kHz to 50 kHz, between 20 and 90 mA
≥17
dB
50 kHz to 12 MHz, between 20 and 90 mA
≥25
dB
Bridging Loss
With 1 filter, 25 kHz to 1.2 MHz
≤0.5
dB
With 5 filters, 25 kHz to 1.2 MHz
≤1.25
dB
With 1 filter, 1.2 to 12 MHz
≤3.0
dB
With 5 filters, 1.2 to 12 MHz
≤4.0
dB
Connectors: One RJ11 jack each for DSL Modem and Phone connection, and one RJ11 plug on a 4” cord for Line connection
Dimensions: Length = 2.59in (65.9mm), Width = 1.21in (30.8mm), Height = 0.729in (18.5mm)
Compliant and listed with UL / CSA 60950, FCC CFR 47 Part 68, and IC CS-03.
12220 World Trade Drive, San Diego, CA 92128 USA
Direct: 858 674 8100, Fax: 858-385-8003
www.excelsus-tech.com
Specifications subject to change without notice. Excelsus is a registered trade mark of Pulse Engineering, Inc.
© 2009 Pulse Engineering, Inc.
EX128.A (9/09)
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