A.H. Systems AK-285T Manuel d'utilisation - Page 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.
© A.H. Systems inc. – August 2011
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)
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