A.H. Systems AK-285R Manuale operativo - Pagina 8

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A.H. Systems AK-285R Shielding Effectiveness Antenna Kit

Monopole and 12" Loop Antenna

A.H. Systems EHA-51B Antenna is an active,

general-purpose, receive-only monopole and loop antenna

for electric and magnetic field testing.

Features

•

Broad Frequency Range of 1 kHz to 60 MHz

•

High Sensitivity

•

Individually Calibrated

•

MIL-STD, VDE and TEMPEST Testing

•

Compact & Lightweight

•

Battery Operated for Enhanced Portability

As an Active Monopole antenna it is ideal for instantaneous bandwidth scanning (without

tuning) of electric fields in its frequency range and can drive any receiver with 50-ohm

input impedance. The EHA-51B is also an active receive only loop antenna for magnetic

field testing. It is suitable for MIL-STD, VDE, and TEMPEST testing, with reliable,

repeatable measurements.

Assembly:The active antenna consists of a ground plane upon which is mounted a

preamplifier with an internal rechargeable battery pack for battery operation, a telescoping

rod and a 12" shielded loop antenna.

Operation: Mount the antenna on the tripod. Connect an external ground to the ground

plane if called out in test specification. Attach the appropriate antenna (telescoping rod or

shielded 12" loop) to the connector on the amplifier top. Connect the output on amplifier

side to the receiver using a cable. Apply power to antenna.

REV A

EHA-51B

Battery Operated Active

1 KHz - 60 MHz

Frequency Range:

Impedance:

Output Connector:

Mounting Base:

Physical Dimensions

Height:

Width:

Length:

Weight:

1 KHz – 60 MHz

50 Ω

N-Type, female

¼ - 20 Thread, female

22.2 in. (56.4 cm)

38.5 in. (97.8 cm)

39.0 in. (99.1 cm)

4.5 lb.'s (2.04 kg)