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Un buon manuale d’uso
Le regole impongono al rivenditore l'obbligo di fornire all'acquirente, insieme alle merci, il manuale d’uso Agilent Technologies E4438C. La mancanza del manuale d’uso o le informazioni errate fornite al consumatore sono la base di una denuncia in caso di inosservanza del dispositivo con il contratto. Secondo la legge, l’inclusione del manuale d’uso in una forma diversa da quella cartacea è permessa, che viene spesso utilizzato recentemente, includendo una forma grafica o elettronica Agilent Technologies E4438C o video didattici per gli utenti. La condizione è il suo carattere leggibile e comprensibile.
Che cosa è il manuale d’uso?
La parola deriva dal latino "instructio", cioè organizzare. Così, il manuale d’uso Agilent Technologies E4438C descrive le fasi del procedimento. Lo scopo del manuale d’uso è istruire, facilitare lo avviamento, l'uso di attrezzature o l’esecuzione di determinate azioni. Il manuale è una raccolta di informazioni sull'oggetto/servizio, un suggerimento.
Purtroppo, pochi utenti prendono il tempo di leggere il manuale d’uso, e un buono manuale non solo permette di conoscere una serie di funzionalità aggiuntive del dispositivo acquistato, ma anche evitare la maggioranza dei guasti.
Quindi cosa dovrebbe contenere il manuale perfetto?
Innanzitutto, il manuale d’uso Agilent Technologies E4438C dovrebbe contenere:
- informazioni sui dati tecnici del dispositivo Agilent Technologies E4438C
- nome del fabbricante e anno di fabbricazione Agilent Technologies E4438C
- istruzioni per l'uso, la regolazione e la manutenzione delle attrezzature Agilent Technologies E4438C
- segnaletica di sicurezza e certificati che confermano la conformità con le norme pertinenti
Perché non leggiamo i manuali d’uso?
Generalmente questo è dovuto alla mancanza di tempo e certezza per quanto riguarda la funzionalità specifica delle attrezzature acquistate. Purtroppo, la connessione e l’avvio Agilent Technologies E4438C non sono sufficienti. Questo manuale contiene una serie di linee guida per funzionalità specifiche, la sicurezza, metodi di manutenzione (anche i mezzi che dovrebbero essere usati), eventuali difetti Agilent Technologies E4438C e modi per risolvere i problemi più comuni durante l'uso. Infine, il manuale contiene le coordinate del servizio Agilent Technologies in assenza dell'efficacia delle soluzioni proposte. Attualmente, i manuali d’uso sotto forma di animazioni interessanti e video didattici che sono migliori che la brochure suscitano un interesse considerevole. Questo tipo di manuale permette all'utente di visualizzare tutto il video didattico senza saltare le specifiche e complicate descrizioni tecniche Agilent Technologies E4438C, come nel caso della versione cartacea.
Perché leggere il manuale d’uso?
Prima di tutto, contiene la risposta sulla struttura, le possibilità del dispositivo Agilent Technologies E4438C, l'uso di vari accessori ed una serie di informazioni per sfruttare totalmente tutte le caratteristiche e servizi.
Dopo l'acquisto di successo di attrezzature/dispositivo, prendere un momento per familiarizzare con tutte le parti del manuale d'uso Agilent Technologies E4438C. Attualmente, sono preparati con cura e tradotti per essere comprensibili non solo per gli utenti, ma per svolgere la loro funzione di base di informazioni e di aiuto.
Sommario del manuale d’uso
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Pagina 1
Agilent E4438C ESG V ector Signal Generator Data Sheet Notice Please contact Agilent T echnologies for the latest information or check the ESG W eb site at www .agilent.com/find/esg[...]
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Pagina 2
2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Key Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Specifications for Frequency and Power Characteristics . . . . . .[...]
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Pagina 3
3 Agilent T echnologies E4438C ESG vector signal generator incorporates a broad array of capabilities for testing both analog and digital communications systems. Flexible options provide test solutions that will evaluate the performance of nearly all current and proposed air interface standards. Many test functions can be customized to meet the nee[...]
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Pagina 4
4 • Expandable architecture • Broad frequency coverage • Choice of electronic or mechanical attenuator • Superior level accuracy • Wideband FM and F M • Step and list sweep, both frequency and power • Built-in function generator • Lightweight, rack-mountable • 1-year standard warranty • 2-year calibration cycle • Broadband ana[...]
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Pagina 5
5 Frequency range Option 1 501 250 kHz to 1 GHz 502 250 kHz to 2 GHz 503 250 kHz to 3 GHz 504 250 kHz to 4 GHz 506 250 kHz to 6 GHz [requires Option UNJ] Frequency minimum 100 kHz 2 Frequency resolution 0.01 Hz Frequency switching speed 3 Option 501-504 With Option UNJ Option 506 Freq. 4 Freq./Amp. 5 Freq. 4 Freq./Amp. 5 Freq. 4 Freq./Amp. 5 Digita[...]
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Pagina 6
6 Power Option 501-504 With Option UNB Option 506 250 kHz to 250 MHz +1 1 to –136 dBm +15 to –136 dBm +12 to –136 dBm > 250 MHz to 1 GHz +13 to –136 dBm +17 to –136 dBm +14 to –136 dBm > 1 to 3 GHz +10 to –136 dBm +16 to –136 dBm +13 to –136 dBm > 3 to 4 GHz +7 to –136 dBm +13 to –136 dBm +10 to –136 dBm > 4 to 6[...]
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Pagina 7
7 Level accuracy with digital modulation turned on [relative to CW] Conditions: [with PRBS modulated data; if using I/Q inputs, √ I 2 + Q 2 = 0.5 V rms , nominal] 1 Level accuracy with ALC on π /4 DQPSK or QPSK formats Conditions: With raised cosine or root-raised cosine filter and a ≥ 0.35; with 10 kHz ≤ symbol rate ≤ 1 MHz; at RF freq ?[...]
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Pagina 8
8 Repeatability and linearity Relative level accuracy measures the accuracy of a step change from any power level to any other power level. This is useful for large changes (i.e. 5 dB steps). 1 Specifications for Frequency and Power Characteristics 1. Repeatability and relative level accuracy are typical for all frequency ranges. Repeatability 1900[...]
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Pagina 9
1. Repeatability and relative level accuracy are typical for all frequency ranges. 9 Linearity CW or GSM, 1900 MHz, attenuator hold On, ALC On -10 -8 -6 -4 -2 0 81 2 Amplitude (dBm) ALC offset error (dB) 0.3 0.25 0.2 0.15 0.1 0.05 0 -0.05 -0.1 -0.15 -0.2 -0.25 -0.3 14 16 10 2 46 T ypical STD unit T ypical Option 506 unit T ypical Option UNB unit Lo[...]
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Pagina 10
10 SSB Phase noise [at 20 kHz offset] 1 Standard With Option UNJ at 500 MHz (< –124 dBc/Hz) < –135 dBc/Hz, (< –138 dBc/Hz) at 1 GHz (< –118 dBc/Hz) < –130 dBc/Hz, (< –134 dBc/Hz) at 2 GHz (< –112 dBc/Hz) < –124 dBc/Hz, (< –128 dBc/Hz) at 3 GHz (< –106 dBc/Hz) < –121 dBc/Hz, (< –125 dBc/Hz)[...]
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Pagina 11
11 Characteristic SSB phase noise With Option 1E5 With Option UNJ fc = 850 MHz fc = 850 MHz fc = 1900 MHz fc = 1900 MHz fc = 2200 MHz fc = 2200 MHz Phase noise modes 1 and 2 at fc = 900 MHz fc = 5.7 GHz [Option 506] Specifications for Frequency and Power Characteristics I/Q on CW mode CW mode CW mode PN mode 1 PN mode 2 CW mode CW mode CW mode I/Q [...]
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Pagina 12
12 Band Frequency range N number 1 250 kHz to ≤ 250 MHz 1 2 > 250 MHz to ≤ 500 MHz 0.5 3 > 500 MHz to ≤ 1GHz 1 4 > 1 to ≤ 2 GHz 2 5 > 2 to ≤ 4 GHz 4 6 > 4 to ≤ 6 GHz 8 Maximum deviation 3 Standard With Option UNJ N x 8 MHz N x 1 MHz Resolution 0.1% of deviation or 1 Hz, whichever is greater Modulation frequency rate 4 [de[...]
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Pagina 13
13 Resolution 0.1% of set deviation Modulation frequency response 3, 4 Standard Maximum Allowable rates [3 dB BW] Mode deviation F M path 1 F M path 2 Normal BW N x 80 rad DC to 100 kHz DC to 100 kHz High BW 6 N x 8 rad (DC to 1 MHz) (DC to 0.9 MHz) N x 1.6 rad (DC to 10 MHz) (DC to 0.9 MHz) With Option UNJ Maximum Allowable rates [3 dB BW] Mode de[...]
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Pagina 14
14 Rates [1 dB bandwidth] 1 ALC on (400 Hz to 40 MHz) ALC off (DC to 40 MHz) Wideband AM using external I input only Sensitivity 0.5 V = 100% Input impedance 50 Ω , nominal On/off ratio 1 ≤ 4 GHz > 80 dB > 4 GHz (> 64 dB) Rise/fall times 1 (150 ns) Minimum width 1 ALC on (2 µs) ALC off (0.4 µs) Pulse repetition frequency 1 ALC on (10[...]
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Pagina 15
Specifications for Analog Modulation W aveforms Sine, square, ramp, triangle, pulse, noise Rate range Sine 0.1 Hz to 100 kHz Square, ramp, triangle 0.1 Hz to 20 kHz Resolution 0.1 Hz Frequency accuracy Same as RF reference source Swept sine mode [frequency , phase continuous] Operating modes T riggered or continuous sweeps Frequency range 0.1 Hz to[...]
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Pagina 16
16 Input voltage RF On 0 V RF Off –1.0 V Linear control range 0 to –1 V On/off ratio 1 Condition: V in below –1.05 V ≤ 4 GHz > 75 dB > 4 GHz (> 64 dB) Rise/fall time 1 Condition: With rectangular input (< 2 µs) Minimum burst repetition frequency 1 ALC on (10 Hz) ALC off DC Input port External 1 Input impedance 50 Ω , nominal [...]
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Pagina 17
17 I/Q inputs Input impedance 50 Ω or 600 Ω Full scale input 1 √ I 2 + Q 2 = 0.5 V rms I/Q bandwidth using external I/Q source (ALC off) 2 I/Q bandwidth using internal I/Q source (Options 001, 002, 601, 602) Specifications for I/Q Characteristics 1. The optimum I/Q input level is √ I 2 +Q 2 = 0.5 V rms , I/Q drive level affects EVM, origin [...]
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Pagina 18
18 Source Parameter Range I/Q baseband inputs Impedance 50 or 600 Ω I offset [600 Ω only] ± 5 V Q offset [600 Ω only] ± 5 V I/Q baseband outputs I/Q offset adjustment ± 3 V I/Q offset resolution 1 mV I/Q gain balance ± 4 dB I/Q attenuation 0 to 40 dB I/Q low pass filter 40 MHz, through RF output I/Q offset adjustment ± 50% I/Q gain balan[...]
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Pagina 19
19 Clock Sample rate 1 Hz to 100 MHz Resolution 0.001 Hz Accuracy Same as timebase +2 -42 [in non-i nteger applications] Baseband filters 40 MHz used for spur reduction 2.1 MHz used for ACPR reduction Through used for maximum bandwidth Reconstruction filter: [fixed] 50 MHz [used for all symbol rates] Baseband spectral purity 1 [full scale sinewave][...]
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Pagina 20
20 Basic modulation types [custom format] PSK BPSK, QPSK, OQPSK, π /4DQPSK, 8PSK, 16PSK, D8PSK MSK User-defined phase offset from 0 to 100° ASK User-defined depth from 0.001 to 100% QAM 4, 16, 32, 64, 128, 256 FSK Selectable: 2, 4, 8, 16 level symmetric, C4FM User defined: Custom map of up to 16 deviation levels Symbol rate Maximum deviation <[...]
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Pagina 21
21 Specifications for I/Q Characteristics 1. Parentheses denote typical performance. 2. Valid for 23° ±5° C. Specifications for Signal Personality Characteristics 3GPP W -CDMA [arbitrary waveform mode 2 ] [Option 400] Data types Internally generated data Pseudo-random patterns PN9, PN11, PN15, PN20, PN23 Repeating sequence Any 4-bit sequence Oth[...]
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Pagina 22
22 Specifications for Signal Personality Characteristics 1. Valid for 23° ±5° C. 2. Parentheses denote typical performance. 3. Measurements performed with 30 kHz BW, relative to power in one carrier . 4. Measurements performed with 30 kHz BW, relative to total power . IS-95 CDMA [arbitrary waveform mode 1 ] [Option 401] Spurious emissions [dBc, [...]
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Pagina 23
23 Number of tones 2 to 1024 T one spacing 1 kHz to 50 MHz, limited by 80 MHz I/Q bandwidth T one power (relative) 0 to –50 dB Phase distribution Fixed, random or parabolic Suppression level –50 to –90 dBc, depending on number of tones and available calibration time. Expected suppression = 80 dBc –10 log [N/8], where N is the number of tone[...]
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Pagina 24
24 EVM ( < 1%, –40 dB) The EVM was measured with an 89641A vector signal analyzer with Option B7R. Instrument and software settings listed below . Software settings Source settings Data rate 54 Mbps Frequency 5.8/2.4/0.9 GHz Modulation 64 QAM Output power ≤ – 1 dBm Encoder 3/4 rate Reconstruction filter thru Scrambler active ALC On interle[...]
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Pagina 25
25 Modulation QPSK π /4DQPSK 16QAM 2FSK GMSK Filter Root Nyquist Gaussian Filter factor [ a or B b T] 0.25 0.25 0.25 0.5 0.5 Modulation index N/A N/A N/A 0.5 N/A Symbol rate [Msym/s] 4 4 4 1 1 Error vector magnitude 3, 4 Shift error 3, 4 Global phase error 3, 4 [% rms] [% rms] [degrees rms] fc = 1 GHz 1.1 (0.7) 1.1 (0.7) 1.0 (0.6) 1.3 (0.8) 0.4 (0[...]
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Pagina 26
26 Multiframe output data generation Coding scheme Full-rate speech [TCH/FS] CS-1, CS-4 Data PN9 or PN15 The selected data sequence is coded continuously across the RLC data block as per ETSI TS 100 909, 3GPP TS 05.03, V8.9.0, 2000-11 [release 1999] An independent version of the selected data sequence is coded across the MAC header . Frame structur[...]
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Pagina 27
27 Multiframe output data generation Coding scheme MCS-1: uplink and downlink, MCS-5: uplink and downlink, MCS-9: uplink and downlink, E- TCH/F43.2 Data PN9 or PN15 The selected data sequence is fully coded continuously across the RLC data blocks according to MCS-1, MCS-5, MCS-9 or E- TCH/F43.2. An independent version of the selected data sequence [...]
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Pagina 28
28 This is a system of two instruments; an ESG with Option 300, and a VSA with Option 300. Both are required. Option 300 for the ESG requires Option 601 or 602, the TDMA personalities [Option 402], and the UN7 BER board. The VSA functions as an IF downconverter . It may be used simultaneously to make transmitter measurements on the loop back signal[...]
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Pagina 29
29 Clock rate 100 Hz to 60 MHz Supported data patterns PN9, 11, 15, 20, 23 Resolution 10 digits Bit sequence length 100 bits to 4.294 Gbits after synchronization Features Input clock phase adjustment and gate delay Adjustable input threshold Hi/lo threshold selectable from 0.7 V [TTL], 1.4 V [TTL] 1.65 V [CMOS 3.3], 2.5 V [CMOS 5.0] Direct measurem[...]
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Pagina 30
30 Power requirements 90 to 254 V; 50, or 60 Hz; 300 W maximum, power factor corrected. Not for 400 Hz use. 1 Operating temperature range 2 0 to 55 °C Storage temperature range –40 to 71 °C Shock and vibration Meets MIL-STD-28800E T ype III, Class 3. Leakage Conducted and radiated interference meets MIL-STD-461C CE02 Part 2 and CISPR 11. Leakag[...]
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Pagina 31
31 T ransit case Part number 9211-1296 10 MHz input Accepts a 1, 2, 5, or 10 MHz ±10 ppm [standard timebase] or ±1 ppm [high-stability timebase] reference signal for operation with an external timebase. Nominal input level –3.5 to +20 dBm, impedance 50 ohms. [BNC, rear panel] 10 MHz output Outputs the 10 MHz reference signal. Level nominally +3[...]
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Pagina 32
32 Data clock input The CMOS 1 compatible data clock connector accepts an externally supplied data-clock input for digital modulation applications. The expected input is a bit clock signal where the falling edge is used to clock the data and symbol sync signals. The maximum clock rate is 50 MHz. The damage levels are –0.5 to +5.5 V . This female [...]
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Pagina 33
33 External 1 input This BNC input connector accepts a ±1 V peak signal for AM, FM, pulse, burst, and phase modulation. For all these modulations, ±1 V peak produces the indicated deviation or depth. When ac-coupled inputs are selected for AM, FM, or phase modulation and the peak input voltage differs from 1 V peak by more than 3%, the hi/lo annu[...]
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Pagina 34
34 _ _ _ _ I and Q out I and Q are used in conjunction with I and Q to provide a balanced baseband stimulus. Balanced signals are signals present in two separate conductors that are symmetrical about the common mode offset, and are opposite in polarity [180 degrees out of phase]. These female BNC connectors are provided only on signal generators wi[...]
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Pagina 35
35 With Option UN7 BER data, BER clock Accepts CMOS 1 or 75 Ω input. Polarity is selected. BER gate Clock duty and inputs cycle is 30% to 70%. [SMB, rear panel] BER sync loss output Outputs a CMOS 1 signal that is low when sync is lost. V alid only when measure end signal is high. [Auxiliary I/O connector , rear panel] BER no data output Outputs [...]
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Pagina 36
36 RS-232 connector This male DB-9 connector is an RS-232 serial port that can be used for controlling the signal generator remotely . It is functionally equivalent to the GPIB connector . The fo llowi ng table shows the description of the pinouts. The pin configuration is shown below . Pin number Signal description Signal name 1 No connection 2 Re[...]
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Pagina 37
37 • 501 1 GHz frequency range • 502 2 GHz frequency range • 503 3 GHz frequency range • 504 4 GHz frequency range • 506 6 GHz frequency range [requires option UNJ, includes mechanical attenuator] • UNB High output power with mechanical attenuator [included with 506] • UNJ Enhanced phase noise performance [includes 1E5] • 1E5 High-s[...]
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Pagina 38
38 • RF Source Basics, a self-paced tutorial (CD-ROM), literature number 5980-2060E. • Digital Modulation in Communications Systems—An Introduction , Application Note 1298, literature number 5965-7160E. • Using V ector Modulation Analysis in the Integration, Troubleshooting and Design of Digital Communications Systems , Product N ote, liter[...]
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Pagina 39
39[...]
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Pagina 40
See the ESG W eb page for the latest information Get the latest news, product and support information, application literature, f irmware upgrades and more. Agilent’s Inter net address for the ESG is: www .agilent.com/find/esg www .agilent.com/find/emailupdates Get the latest information on the products and applications you select. Ag ile nt Email[...]