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MOBILE COMMUNICATIONS MEASURING INSTRUMENTS

MEASURING RECEIVER

GPIB

ML524B

OPTION

25 to 1000 MHz

For Measuring Service Area

Custom-made product

The ML524B has a full range of features and functions plus demod-ulation functions for various signals. The compact, lightweight con-struction makes it suitable for a variety of measurementapplications.The GPIB interface option allows easy configuration of an automatic test system controlled by a personal computer.

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Direct readout of field strength

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High precision level display (indication in 0.1 dB steps)

Applications

For field strength measurement

Features? ?

Investigation to determine service areas Very compact and lightweight

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Radio wave propagation test

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High frequency stability (A synthesizer local is used. Its referenceoscillator has a high frequency stability of ±1 x 10

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Measurement of spurious radiation from transmitter

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.) For other than field strength measurement

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Wide dynamic range (80 dB without switching)

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Radio monitoring

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Automatic gain calibration

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Measuring receiver

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High-sensitivity signal demodulation

Specifications

RF inputNominal impedance 50 Ω , N-type connector Range25.0000 to 999.9999 MHz DisplayLiquid crystal display, 6 digitsMinimum digit: 1 kHz (0.5 kHz is displayed using a symbol of .) FrequencyResolution12.5 kHz (120 kHz bandwidth), 1 kHz (15 kHz bandwidth) SettingKeyboard and FINE dial MemoryUp to 100 frequencies can be stored and recalled. Reference frequency stability±1 x 10
–6 Minimum value5 dBµV (25 to 300 MHz), 5 dBµV (300 to 999.999 MHz) VoltageMaximum value100 dBµV (25 to 999.999 MHz) measurementSettingC/N: ≥ 6 dB (at minimum value), Bandwidth: 15 kHz (E.M.F.)Accuracy (digital display)±2 dB ( ≥ minimum value +6 dB) Comparison oscillatorPulse generator Minimum value–5 to 19 dBµV/m (25 to 300 MHz), 19 to 32 dBµV/m (300 to 999.999 MHz) Field strengthMaximum value0 to 114 dBµV/m (25 to 300 MHz), 114 to 120 dBµV/m (300 to 999.999 MHz) measurementSettingC/N: ≥ 6 dB (at minimum value), Bandwidth: 15 kHz Type of antennaHalf-wave dipole 6 dB bandwidth15 ±2 kHz (15 kHz bandwidth), 120 ±20 kHz (120 kHz bandwidth) SelectivityDetuning characteristics15 kHz bandwidth ≥ 50 dB (±20 kHz off center) Image ratio ≥ 60 dB (at 25.000 to 299.999 MHz), ≥ 45 dB (at 300 to 999.999 MHz) Residual spurious ≤ 10 dBµV (typical near 50, 130, 600, 1000 MHz) Detection systemAverage value Continued on next page

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