IFR AN1840 Analyzer
Manufacturer:
Model:
AN1840
Date:
Category:
Group:
Description:
Spectrum Analyzer

Information

GENERAL The AN1840 is a microprocessor controlled, digitally synthesized spectrum Analyzer. The AN1840 utilizes a numeric keypad, dedicated function keys, multitask Soft Function Keys and a high resolution LCD to display, enter and edit functions and data. Testing is done manually using external front panel controls or remotely through the RS-232 or IEEE-488 external Interface. Microprocessor controlled memory allows storage and recall of parameters for each of the major testing modes as well as storage and recall of traces for signal comparison. 1-2 STANDARD FEATURES The AN1840 Spectrum Analyzer spans a range from 0 Hz to 26,5 GHz, at up to +30 dBm. The AN1840 input impedance is 50 Ω. The AN1840 operates as a Spectrum Analyzer, Frequency Counter, Digital Oscilloscope or AM/FM Receiver. 1-2-1 DISPLAY The AN1840 Display is a color VGA thin film transistor (TFT) LCD. The graticule area on the LCD has 500 horizontal pixels by 256 vertical lines. The Display shows up to 4 traces on the screen for comparison of live or previously stored signals. The 80 dB of dynamic range in the Logarithmic display mode is expandable to 120 dB. The Linear display mode provides dB units in addition to the regular power and voltage units, eliminating the need for external conversions. 1-2-2 MEASUREMENTS WITH THE AN1840 SPECTRUM Analyzer The AN1840 tests and measures spectral purity, mixer products, modulation, carrier levels, suppression in Single Side Band Radios, harmonic levels, RF, EMI, FM deviation, AM % modulation, signal limits and distortion. The AN1840 is not limited to only these measurements. 1-2-3 INPUT LEVEL Maximum input level to the AN1840 is +20 dBm with <10 dB internal attenuation or +30 dBm with >10 dB internal attenuation. Maximum pulsed level is +40 dBm with >10 dB internal attenuation. CAUTION: SIGNALS EXCEEDING THE MAXIMUM INPUT LEVEL OF +30 dBm MAY CAUSE DAMAGE TO THE SPECTRUM'ANALYZER. 1-2-4 MARKERS The AN1840 Spectrum Analyzer incorporates the use of single and dual markers on the Display. Markers provide easy measurement of any portion of displayed signal. The Delta function shows differences in levels and time or frequency. Markers have peak search capability. 1-2-5 EXTERNAL ATTENUATION/GAIN OFFSET An offset value compensating for external attenuation and gain eliminates manual calculations. By setting an offset value equal to the sum of all external attenuation and gain factors, the AN1840 automatically displays true levels for signals requiring amplification or attenuation prior to entry into the AN1840, The offset also compensates for losses present when dealing with antenna factors. 1-2-6 FREQUENCY Counter The frequency Counter provides selectable resolution at narrow or wide frequency span settings. Resolution is set to 1, 10, 100 or 1000 Hz. 1-2-7 EXTERNAL Interface The IEEE-488 GPIB Connector provides parallel communications between the AN1840 and an external controller. The RS-232 Connector provides serial communications between the AN1840 and an external controller. Both connectors provide remote operation and monitoring capabilities. An output from memory may be sent directly to an HPGL-compatible plotter through the IEEE-488 GPIB Connector or RS-232 Connector. Also, the AN1840 provides a print screen output through the Printer Connector, IEEE-488 GPIB Connector or RS-232 Connector. 1-2-8 AM/FM RECEIVER The AM/FM Receiver provides for modulation and deviation measurements. AM/FM Receiver audio is available through the internal speaker or a headphone connected to the PHONES Connector. The SQUELCH Control and VOLUME Control adjust the audio output to desired levels when operating the AM/FM Receiver. 1-2-9 MIXER FUNCTION The External Mixer Function allows the AN1840 to measure signals with frequencies greater than 26.5 GHz, up to 1300 GHz. An external mixer with known amplitude characteristics is required. 1-2-10 FFT OPERATION The AN1840 provides FFT measurement operation with selectable window functions. Uniform, Bartlett, Blackman, Blackman-Harris, Hamming, Hanning or Nuttail may be selected. 1-2-11 MEMORY The AN1840 has internal memory capacity to store 99 traces (including user defined traces and test limits) and 99 setups. Also available are 64 kilobytes of user definable memory for custom applications. 1-3 OPTIONAL FEATURES AND Accessories The following features are added to the AN1840 as desired: 1-3-1 OPTION 02 - TRACKING Generator Enables swept measurements in the 100 kHz to 2.9 GHz range. 1-3-2 OPTION 08 - QUASI-PEAK DETECTOR Performs Electromagnetic Interference (EMI) measurements. Also includes additional resolution bandwidth (RBW) filters (200 Hz, 1 kHz, 9 kHz, 120 kHz and 1 MHz). 1-3-3 OPTION 09 - HIGH STABILITY TIME BASE Increases time base stability to 0.01 ppm. Stabilizes aging to 0.2 ppm after first year of usage. (Time base stability is 0.2 ppm, aging to 2 ppm after one year, without Option 09 installed.)

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User Manual
Manual type:
User Manual
Pages:
272
Size:
10.56 Mbytes (11074689 Bytes)
Language:
english
Revision:
Manual ID:
1002-0401-200
Date:
Quality:
Electronic document, no scan, very well readable.
Upload date:
14 May 2017
MD5:
e24a3b4d7dcec453735882ed34ed4cca
Downloads:
234

Information

This manual contains instructions for operating the AN1840 9 kHz-26.5 GHz Spectrum Analyzer. The instruction level is relatively basic and presupposes no previous experience on the part of the operator with a Spectrum Analyzer of this type. A basic understanding of communication electronics and practical troubleshooting methods is helpful. It is strongly recommended that the operator be thoroughly familiar with Sections 1 through 4 of this manual before attempting to operate the unit. ORGANIZATION The AN1840 Operation Manual is composed of the following sections: SECTION 1 - INTRODUCTION Provides an introduction to the unit and a brief overview of unit functions. SECTION 2 - INSTALLATION Provides a step-by-step procedure for placing the AN1840 into operation. SECTION 3 - DESCRIPTION OF CONTROLS. CONNECTORS AND INDICATORS Identifies and functionally describes all AN1840 controls, connectors and indicators. Provides complete descriptions of all Display operation screens, menus and parameters. SECTION 4 - OPERATION Provides general procedures for operating the AN1840 and test applications, using the AN1840 to measure various types of input signals, SECTION 5 - PERFORMANCE EVALUATION Identifies and explains procedures the operator can use to insure the AN1840 is performing properly. SECTION 6 - REMOTE OPERATION Contains procedures for configuring and operating the AN1840 remotely via GPIB or RS-232 external connections. Lists unit specific commands for remote operations and commands mandated by IEEE-488.2 1987. SECTION 7 - OPTIONS Contains information on the Tracking Generator (Option 02) and Quasi-Peak Detector (Option 08). Provides a general procedure for measuring Electromagnetic Interference (EMI) using the Quasi-Peak Detector.

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