Anritsu MA24 A Series, Operation Manual, Page: 22 / 88

2-2 PN: 10585-00004 Rev. T MA24xxA/B/D, MA2400xA OM
2-2 Sensor Descriptions Chapter 2 — Functional Description
Since the connector-to-body threads have thread-locking
compound applied, slight unthreading of the connector from the
body may not be physically apparent. Unthreaded or damaged
connectors will change the voltage versus power relationships.
These changes are usually manifested as a poor input match.
Any suspect power sensor should have two parameters tested:
• SWR (reflection coefficient magnitude)
• Sensitivity
Refer to Chapter 4 for test instructions.
2-2 Sensor Descriptions
MA247xD Standard Diode Sensors
Description
The Anritsu MA247xD standard diode sensors are designed for
use with the ML2430, ML2480 and ML2490 series power meters.
They are designed for high dynamic range, high accuracy CW and
TDMA measurements. These power sensors have 90 dB dynamic
range and linearity better than 1.8% making them the choice for
precision measurements. The 4

s rise time of these sensors is
fast enough for power measurements on GSM and similar TDMA
systems that use GMSK modulation.
Features
• Wide dynamic range sensors (–70 dBm to +20 dBm)
• Accurate CW average power measurements
• Wide frequency coverage from 10 MHz to 50 GHz (sensor
dependent)
• Calibration factors stored in EEPROM
Note
There are no user serviceable parts inside the power
sensors. Contact your local Anritsu Service Center and
return the power sensor with a detailed description of the
observed problems.