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LAPLACE LISN &VOLTAGE PROBES

LAPLACE INSTRUMENTS LISNS
LINE IMPEDANCE STABILISATION
NETWORKS

Laplace Instruments LISN16A1P  CISPR16 Single Phase 16 amp LISN

The full range of Laplace Instruments LISN’s comprises of:
• Automotive, to CISPR25 Voltage probe to CISPR16
 Commercial (to CISPR16), up to 16A, single phase
 Commercial (to CISPR16), up to 100A, 2 and 4 line
• Military (Def Stan 59-41) and Mil Spec 461 types
• Voltage probe (PLIP) to CISPR16

Features
All commercial LISNs include an artificial hand connection and a transient limiter. This adds a 30dB insertion loss. A 30dB pre-amplifier is included which can be connected in the RF output feed to return the insertion loss to 0dB. All bar the heavy current LISNs are constructed in a flanged aluminum enclosure that can be bolted directly down to a ground plane (as required by standards). The underside of the enclosure is left unpainted to ensure good conductivity with the plane.
The 16A and military/automotive LISNs have an RF output for each line, thus allowing parallel measurements of the emissions. This facilitates measurement of common mode and differential mode components of the emissions if required.

Key Points
• LISNs with ratings up to 100A/line and up to 4 lines.
• Commercial versions fully compliant to CISPR16
• Def Stan and Mil Spec versions also available
• Voltage probe (PLIP) with inbuilt safety features for lines >100A
• Fully calibrated and complete with test lab certificate and cal. data

SPECIFICATION FOR CISPR16 LISN – up to 32 amps

LISN16A1P

LISN32A1P

LISN32A3P

Cont.amps (per ph)

16 Amps

32 Amps

32 Amps

Input connection

2m flying lead

4mm socket

4mm socket

Output connections

Mains socket + 4mm socket

4mm socket

4mm socket

Power frequency

DC to 400 MHz

DC to 400MHz

DC to 400MHz

RF out selection

separate BNCs

Selector switch

Selector switch

Max voltage (Ref. to ground)

275v rms

275v rms

275v rms

Insertion loss, Pre-amp bypassed

30dB

30dB

30dB

Network

50Ω II 50μH

50Ω II 50μH

50Ω II 50μH

Impedance

To CISPR16, figure 7b, ±20%

To CISPR16, figure 7b, ±20%

To CISPR16, figure 7b, ±20%

Construction

Alloy case with base flanges

Modular instrument case

Modular instrument case

Pre-amp gain

30dB, ± 1.5dB

 

30dB, ± 1.5dB

 

30dB, ± 1.5dB

Pre-amp location

external

internal

internal

Frequency range

9KHz-30MHz

 

9KHz-30MHz

 

9KHz-30MHz

Noise figure

less than 5dB

less than 5dB

less than 5dB

Max signal level

+80dBμV

+80dBμV

+80dBμV

Saturation signal level

+120dBμV

+120dBμV

+120dBμV

Power

12V DC from included mains supply

12V DC from included mains supply

12V DC from included mains supply

 

MODEL

STANDARD

CURRENT RATING
(A)

PHASES

TRANSIENT LIMITER FITTED

SIZE

FREQUENCY RANGE

LISN16A1P

CISPR16

16

L, N

YES

A

150KHz – 30MHz

LISN32A1P

CISPR16

32

L, N

YES

B

150KHz – 30MHz

LISN63A1P

CISPR16

63

L, N

YES

B

150KHz – 30MHz

LISN100A1P

CISPR16

100

L, N

YES

B

150KHz – 30MHz

LISN32A3P

CISPR16

32

L1, L2, L3, N

YES

C

150KHz – 30MHz

LISN63A3P

CISPR16

63

L1, L2, L3, N

YES

C

150KHz – 30MHz

LISN100A3P

CISPR16

100

L1, L2, L3, N

YES

C

150KHz – 30MHz

LISNC25/
25A1P

CISPR25

25

1

NO

A

100KHz – 108MHz

LISNC25/
25A2P

CISPR25

25

2

NO

A

100KHz – 108MHz

LISNC25/100A

CISPR25

100

1

NO

D

100KHz – 108MHz

LISN59-41/32A2P

DEFSTAN59-41

32

2

NO

A

20Hz – 400MHz

LISN59-41/100A

DEFSTAM59-41

100

1

NO

D

20Hz – 400MHz

LISN461E/10A2P

MIL 461E

10

2

NO

E

10KHz – 10MHz

LISN461E/100A

MIL 461E

100

1

NO

E

10KHz – 10MHz

 

LISN MECHANICAL DATA – Size in mm

CASE

A

B

C

D

E

WIDTH

180

530

535

180

200

LENGTH

300

422

522

500

600

HEIGHT

80

310(6u)

445(9u)

100

185

The Voltage Probe requirement is covered by our PLIP (Power Line Interference Probe). This fully meets the requirements of CISPR16, but has additional features:
• Fully galvanic isolation between input and output (>1kV), for the safety of operator and analyzer!
• Shrouded safety clips for attachment to the line to be measured.
• Filtered frequency response matched to Band A and B.
• Current limiting on the output.
• Visual indication of high voltage input.

LISN is an optional extra for the following products:
• 1GHz EMC emissions Analyzer
• Pre-Selectors for EMC test
• Ancillaries.. conducted
• CRS+

LISN & Voltage Probes appears in the following kits:
• CLIENTS (optional for this kit)
• RFG kit (optional for this kit)
• RFC- conducted emissions kit
• Filter Design System
• ALECS

ASSOCIATED DOWNLOADS
Military LISN (Line Impedance Stabilization Network) Data Sheet – Military LISN

 Data Sheet – Automotive LISNs

 Data Sheet – PLIP (Power Line Interference Probe)

 Data Sheet – High power LISNs

 Data Sheet – CISPR16 LISNs