Aeroflex FM/AM 500A Data Sheet

Proven Performance

The FM/AM-500A is a communications
service monitor that gives you the
performance, field portability and durability
you need in a value-priced and compact
package.

Since its introduction, the FM/AM-500A
has earned a loyal following among
wireless testing professionals. It is an
incredibly rugged and field-proven
communication test set.

With proven performance, the
FM/AM-500A is the perfect test solution for
a wide range of wireless communication
test requirements.

Typical applications include FM/AM
testing, conventional two-way radio test,
SSB testing and basic communication
systems performance tests.

Standard Features

- FM and AM Signal Generator

- 2 µV receiver for AM, FM and SSB

- 10 Hz to 9999.9 Hz variable audio
generator and audio frequency error
meter

- 1 kHz audio generator

- Frequency error meter with 1 Hz
resolution

- Peak/Average watt meter

- Deviation measurement to 60 kHz

- SINAD/Distortion Meter

- 0.2 PPM TCXO

- Microphone input

- Audio demodulator output

Specification

Frequency Range

250 kHz to 999.9999 MHz

Resolution

100 Hz

Variable Generate

Continuous tuning ±10 kHz from selected frequency

Residual FM

< 100 Hz peak RMS

RF Output Power

-127 dBm to 20 dBm (10 dB steps with 11 dB
range continuous vernier)

RF Output Accuracy

±3 dB

Output Impedance

50 Ω Nominal

EXTERNAL MODULATION
Frequency Response

FM: 2 Hz to 30 kHz (DC when in variable

generate)

AM: 10 Hz to 10 kHz

(30% maximum modulation above 5 kHz)

Modulation Sensitivity

FM: 0.08 VRMS/kHz ±30% of reading
AM: 0.01 VRMS/%

Distortion (1 kHz tone)

FM: <1% to 20 kHz deviation
AM: <10% to 60% modulation

Input Impedance

Greater than 10 kΩ

Operating Modes

Internal: Modulation/Tone Out level

controlled by 1 kHz or variable
control

Speaker: Tone applied directly to

speaker with volume
controlled by 1 kHz or
variable control.

External + Internal: External modulation input is

summed directly with tones
and applied to modulator

Tone Accuracy

Fixed: Same as master oscillator
Variable: ±0.01%

Tone Distortion (@ 2.5 VRMS Output)
Fixed <0.5%
Variable ±0.5% @ 1 kHz, <1.5%

10 Hz
To 9999.9 Hz

Tone Output Level

0 to 2.5 VRMS into 150 Ω load

Frequency Range

10 Hz to 9999.9 Hz in 0.1 Hz increments

Gain

30 dB ±2 dB typical, 100 kHz to 1000 MHz

Test set output with amplifier installed

Variable to +10 dBm, FM and CW
Variable to +4 dBm, AM (nominal)

Range

0 to 15 and 0 to 150 watts peak or
average responding

Accuracy

1 to 600 MHz: ±7% reading

±3% full scale

600 to 1000 MHz: ±20% reading

±3% full scale

Input Power

25 W continuous
150 W - 60 seconds on, 5 minutes off

Power Meter

Generate Amplifier

Audio Generator

RF Signal Generator

FM/AM-500A

Communications Service Monitor

A low cost, proven
service monitor for a
variety of wireless
communications test
requirements

Wireless - Radio Test Sets

FM and AM Signal Generators
2 µV receiver for AM, FM and SSB
Analog meters offer high visibility in

all lighting conditions
Paging test for analog paging

formats and advanced digital
paging with the AC510 option

0.2 ppm TCXO

FM/AM - 500A

1

http://www.ifrinternational.com

Frequency Range

100 kHz to 999.9999 MHz in 100 Hz increments

Sensitivity

2 µV (1 MHz to 1000 MHz, FM Narrow)

Demodulation Output Impedance

600 Ω

RF Accuracy

±Master Oscillator, ±3% of full scale

RF Ranges

±10 kHz, ±3 kHz, ±1 kHz, ±300 Hz, ±100 Hz,
±30 Hz full scale.

Audio Counter Ranges

±300 Hz, ±30 Hz, ±3 Hz full scale

Audio Counter Accuracy

±0.01%, ±6% of full scale

Type

Maximum of positive or negative peak (AM and FM)

FM Deviation Accuracy

±5% of reading, ±3% of full scale

AM% Modulation Accuracy

±5% of reading, ±3% of full scale

SINAD Range

3 to 20 dB @ 1kHz

Accuracy

±1 dB at 12 dB SINAD

Input Level

0.25 VRMS to 2 VRMS
(10 VRMS maximum SINAD)

Impedance

10 kΩ nominal

Distortion Range

0 to 20% at 1 kHz

Dimensions

292 mm (11.5 in) wide, 124 mm (4.9 in) high,
363 mm (14.3 in) deep

Weight

9.9 kg (22 lb) with battery

When ordering please quote the full order number
information

Ordering
Numbers Versions

500A-110 FM/AM-500A, 110 VAC operation
500A-110-C FM/AM-500A, 110 VAC, with Certificate of

Calibration
500A-220 FM/AM-500A, 220 VAC operation
500A-220-C FM/AM-500A, 220 VAC operation, with

Certificate of Calibration
500A-T-110 FM/AM-500A, 110 VAC, with 0.05 ppm

OCXO time base
500A-T-110-C FM/AM-500A-T-110, with Certificate of

Calibration
500A-T-220 FM/AM-500A, 220 VAC, 0.05 ppm OCXO

timebase
500A-T-220-C FM/AM-500A-T-220, with Certificate of

Calibration

Accessories

AC0005 Soft Padded Carrying Case
AC510 Paging Encoder
AC1201 Telescopic antenna
AC1205 Microphone
AC5201 Maintenance Manual
AC5249 Generate Amplifier +30 dB gain

Versions and Accessories

General Characteristics

SINAD Distortion Meter

Modulation Meter

Frequency Error Meter

Receiver Monitor

FM/AM-500A

Part no. 46891-027

Revision A

FM/AM-500A

2

http://www.ifrinternational.comhttp://www.ifrinternational.com

IFR Americas, Inc., 10200 West York Street, Wichita, Kansas
67215-8999, USA. E-mail: [e-mail]
Tel: [phone] Toll Free USA: 1 800 835 2352 Fax: [phone]

As we are always seeking to improve our products, the information in this document gives only a general indication of the product capacity, performance and suitability, none of which shall form part of any

contract. We reserve the right to make design changes without notice. All trademarks are acknowledged. Parent Company IFR Systems, Inc. © IFR Ltd. 1999.

Tel: [phone] Freephone UK: 0800 282 388 Fax: [phone]

IFR Ltd, Longacres House, Norton Green Road, Stevenage, Herts

SG1 2BA, United Kingdom. E-mail: [e-mail]