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INSTRUCTION MANUAL
AL-RE101
LOOP ANTENNA
SECTI ON 6
-
CALIBRATION
1912 1 E l T o ro R d
●
Si l vera do, Ca lifo rni a 9 26 76
●
(9 49) 459 -96 00
●
co m-p o wer. com
Rev101617
6.0 Calibration and Calibration Cycle
Your AL-RE101 Loop Antenna has been individually calibrated with NIST traceability, and
the appropriate data and certificate has been provided. Periodic re-calibration of the
AL-RE101 is recommended. Calibration intervals is left to your discretion, but should be
chosen based on the frequency with which it is used, and/or as allowed for by your
internal quality control system (if applicable). Com-Power offers NIST traceable
calibration services. Recognized ISO 17025 accredited calibrations are also available.
6.1 Calibration
Equipment
During calibration, the current flowing through the transmitting loop must be
monitored. The current can be monitored by measuring the voltage drop across
a 1 ohm resistor placed in series with the drive line to the transmit loop; or it can
be monitored using a current probe placed around the drive line to the transmit
loop.
Typical measurement setups for the respective calibration methods are illustrated
in
Figure 5
and
Figure 6
.
FIGURE 5 -
Typical Measurement Setup for Calibration (1
Ω
Resistor Method)
FIGURE 6 -
Typical Measurement Setup for Calibration (Current Probe Method)
AL-RS101-TX
Loop Antenna
(Transmitting)
AL-RE101
Loop Antenna
(Receiving)
12
cm
loops must
be parallel
and aligned
coaxially
Source
Equipment
Measuring
Instrument #2
50Ω
INPUT
Measuring
Instrument #1
CLCE-400
RF CURRENT PROBE
10 kHz to 400 MHz
www.com-power.com
50Ω
INPUT
AL-RS101-TX
Loop Antenna
(Transmitting)
AL-RE101
Loop Antenna
(Receiving)
12
cm
loops must
be parallel
and aligned
coaxially
1Ω
PRECISION SERIES
RESISTOR (10 Watt)
Measuring
Instrument #2
50Ω
INPUT
HIGH Z
INPUT
Source
Equipment
Measuring
Instrument #1
(Powered
through
isolation
transformer)
