Active Loop Antennas / Magnetic Field Probes

• FMZB 1512 – Active Receiving Loop Antenna
• FMZB 1513 – Active magnetic loop antenna optimized for mobility
• FMZB 1513-60 – Active magnetic loop antenna optimized for mobility
• FMZB 1519 B- Active magnetic loop antenna
• FMZB 1525 – Active Handheld RX Loop Antenna
• FSH3D – Isotropic H-Field Antenna for the Rohde and Schwarz handheld spectrum analyses FSH or the TS-EMF System
• HFS 1546 Active Magnetic Field Probe With Shielded 50-mm-Loop

 FMZB 15XX Active Receiving Loop Antenna family

The probes of the FMZB-family measure only magnetic field strength and use e-field shielding.

 

This is also true when fictitious efield strength is derived from magnetic field strength via the characteristic field impedance of the free space. Fictitious electric field strength has been used for many years. Especially in the common am frequency ranges the field-strength of broadcast transmitters was measured under far field conditions. Similar basic circuits are used for the FMZB probes. Only the dynamic range is shifted.

For one probe there are different conversion factors for the calculation of fictitious electric and magnetic field strength level. They differ by 51,5 dB and so at least one of the conversion factors will be «odd» and inconvenient. For this reason conversion factors (antenna factors) of the magnetic field-strength adapter FMZB 1516 and of the hand-held probes FMZB 1517 and FMZB 1527 are optimized for the calculation of the fictitious electric field strength level in dBmV/m.

 

Conversion factors (antenna factors) of the newer hand-held probes FMZB 1537, FMZB 1538, FMZB 1547 and FMZB 1548 are optimized for the calculation of the magnetic field strength level in dBmA/m. The magnetic field strength adapter FMZB 1516 has best sensitivity due to its large loop, followed by FMZB 1517, FMZB 1537 and FMZB 1538. Very strong field-strength is covered by the FMZB 1527 and especially FMZB 1547 and FMZB 1548. The FMZB 1537 and FMZB 1547 get their power supply via the coaxial cable and therefor need a power supply separator on the receiver input. A separate power supply cable is obsolete. When a separate power supply cable is no problem, always use FMZB 1538 or FMZB 1548, because no power supply separator is needed.

 

Active Hand Held RX Loop Antenna FMZB 1512 

· Active Receiving Loop Antenna

· Frequency range: 9 kHz – 30 MHz

The FMZB 1512 is an active shielded hand held loop antenna with nearly constant antenna factor over the entire frequency range.
It can be used for testing according to CISPR, MIL, FCC, EN, ISO, ANSI, ETSI and many other standards.

 Data sheet FMZB 1512

Active Magnetic Loop Antenna FMZB 1513 

 
· Active magnetic loop antenna

· According to CISPR 16
· 9 kHz to 30 MHz
· constant antenna factor 20 dB/m
· with built in Ni-MH-batteries
· detachable glass fiber handle 180 mm
· Optimized for mobility

 Data sheet FMZB 1513

Options:
Opt. ACS 110: Charger ACS 110 for FMZB 1513

Opt. 500 mm Handle: Additional glass fiber handle of 500 mm length.

CCA 1513-60 Transport case for FMZB 1513 and accessories.

 

Active Magnetic Loop Antenna FMZB 1513-60 

· Active magnetic loop antenna

· According to CISPR 16
· 9 kHz to 30 MHz
· constant antenna factor 20 dB/m
· built in rechargeable NiMH batteries

· detachable glass fiber handle 180 mm

· Loop diameter: 60 cm

· Optimized for mobility

 Schwarzbeck FMZB 153-60 Active Loop Antenna Data Sheet

Options:
Opt. ACS 110: Charger ACS 110 for FMZB 1513-60

Opt. 500 mm Handle: Additional glass fiber handle of 500 mm length.

CCA 1513: Transport case for FMZB 1513-60and accessories.

 

Active Magnetic Loop Antenna FMZB 1519 B 

· Active magnetic loop antenna

· According to CISPR 16
· 9 kHz to 30 MHz
· constant antenna factor 20 dB/m
· built in rechargeable battery

 

 Data sheet FMZB 1519 B

Option: Opt. ACS 110: Charger ACS 110 for FMZB 1519 B

 

FMZB 1525 Active Handheld RX Loop Antenna 

The FMZB 1525 is an active, shielded handheld loop antenna with nearly constant antenna factor over the entire frequency range. It can be used for testing according to CISPR, MIL, IEEE, FCC, EN, ISO, ANSI, ETSI and many other standards.

 

It can be used for the frequency selective measurement of magnetic fields (or fictive electric field) in the frequency range from 9 kHz to 30 MHz.

Since it is directional sensitive, it can be used to locate field sources.

 

Specifications:
Nominal frequency range:	9 kHz – 30 MHz
Loop diameter:	300 mm
RF connector:	N-Buchse 50 N-female 50
Antenna factor for fict. E-field strength:	10 dB/m
Antenna factor for H-fieldstrength:	-41.5 dB/  m
Maximum field strength:	125 dBµV/m (1.8 V/m)
Frequency response:	< ± 3 dB typ.
VSWR at „Output“:	< 2
Operation time with fully charged batteries:	>12 h typ. 16 h
Battery capacity:	Ni-MH 9.6 V / 800 mAh
Mounting tube:	ø 22 x 40 mm
Dimensions:	165 mm x 350 mm x 45 mm
Material:	Aluminium
Weight:	540 g
Accessories:
Ni-MH-Charger	ACS 48

 

 Schwarzbeck FMZB 1525 Active Handheld RX Loop Antenna Data Sheet

 

FSH3D Isotropic H-Field Antenna for the Rohde and Schwarz handheld spectrum 

Isotropic H-Field Antenna for the Rohde fund Schwarz handheld spectrum analyzer FSH or the TS-EMF System. 9 kHz – 200 (300) MHz Light weight low attenuation Radom Outer diameter ca. 150 mm The selection of the active loop and the power supply for the antenna is provided by the included short cable that can directly be connected to the R&S FSH.

 

 FSH3D Isotropic H-Field Antenna Data Sheet

 

HFS 1546 Active Magnetic Field Probe With Shielded 50-mm-Loop

· Active magnetic Field Probe with shielded 50-mm-Loop

· 150 kHz – 400 MHz
· acustic field strength indication with tone generator

A Shorter Version Is Available On Request

 Data sheet HFS 1546

 Manual

FSH3D Isotropic H-Field Antenna for The Rohde and Schwarz Hand held spectrum analyzer FSH or the TS-EMF System
FSH3D 

 
· Isotropic H-Field Antenna for the Rohde under Schwarz hand held spectrum analyzer FSH or the TS-EMF System

· 9 kHz – 200 (300) MHz
· Light weight low attenuation Radom
· Outer diameter ca. 150 mm

The selection of the active loop and the power supply for the antenna is provided by the included short cable that can directly be connected to the R&S FSH.

 Data sheet FSH3D