IFR | Marconi 2955B radio is integrated instrument

Product model: 2955A/2955B/2955R
Introduce simply
Signal generator of * radio frequency: 400kHz~1000MHz
Powermeter of * radio frequency: 0.05mW~150W
* shoots frequency frequency meter: 1.5MHz~1000MHz
Measuring instrument of duplex operation of * complete function: Use at measuring standard diplexer, cross paragraph of diplexer and transponder
* modulation analyzer: Frequency modulation / amplitude modulation / phase modulation
*2 frequency signal source / modulation signal source: 10Hz~20kHz
* frequency volmeter: 0V~100V(chooses from momentum Cheng) 20Hz~50kHz(or DC means)
* frequency frequency meter: Oscillograph of memory of 20Hz~20kHz 50kHz number
* frequency SINAD believes accept to compare a list
* frequency S/N believes a confusion of voices to compare a list
Distortion factor appearance of * frequency DISTORTION
*POCSAG coder / DCS coder
*DTMF, CCIR, EEA, EIA, ZVEI make up / decoder
*26 blame is easy break memory cell
Function of process designing of * all GPIB, can use at testing a system automatically
The detailed introduction of integrated instrument 2955A/B
Integrated instrument 2955A/B is a kind of radio integrated instrument, it includes to check span to send and receive message machine place to measure equipment of the requirement entirely to the movable type radio of 1000 megahertz, a kind of design is workbench or mobile applying, the device of compact form a complete set, it can regard undermentioned the combination of 14 kinds of instruments:
Shoot frequency frequency meter, frequency frequency meter, radio frequency signal generator, radio frequency powermeter, frequency and volts d.c. are expressed, modulation watch, distortion factor watch, letter a confusion of voices is compared (S/N) or letter offer (SINAD) plan, the number puts lay aside oscillograph, ordinal tone solves code and encode, double sound much frequency (DTMF) decipher and encode, the number piles up static a confusion of voices (DCS) decipher and encode.
Pushbutton choice is measured for instrument of avery kind of offerred all must interrelate, what when eliminating all instruments that using depart thereby, need a lot of interrelating. Functional choice and data input pile up dish of aspirant travel in color, from left to right arranged a code logically dish the operation is ordinal. Use CRT oscilloscope, enhanced the job of the instrument greatly, the clew when offerring data to input and operation order guideline, install and measure an outcome what also show an instrument, the repetition that passes oscillograph scans, odd second and maintain, and bar chart of Cheng of 5 each momentum showed imitate to measure.

Function index
Radio frequency signal generator
Frequency: Limits: 0.4MHz~1000MHz
Resolution: 50Hz(≤530MHz); 100Hz(530MHz~1000MHz)
Directive: 8 digit word shows
Precision: With inside frequency standard is same
Output n:
Limits: N: - 135~-15dBm(0.04μV~40mV)
BNC: - 115~+5dBm(0.4μV~400mV)
Sheet carries duplex operation: - 140~-21.5dBm(0.0224μV~18.85mV)
Double end duplex operation: - 115~-15dBm(0.4μV~40mv)
Resolution: 0.1dB
Directive: 4 digit (DBm/μV, PD/EMF and DBmμV)
Precision: To prep above - the n of 127dBm is ±2dB
Spectrum purity
Successive wave frequency modulation: <30Hz(arrives to 520MHz) <60Hz(mean effective value of 1000MHz) (0.3~3.4kHz weight)
The model is worth 8Hz~250MHz, 15Hz~500MHz, 30Hz~1000MHz
Harmonic: Point to only in 0.4~1000MHz frequency paragraph the harmonic inside
<-20dBc arrives 1.5MHz
<-25dBc 1.5~250MHz
<-20dBc 250~1000MHz
Cent harmonic: Do not have inside 530MHz, <-25dBc arrives 1000MHz
Parasitism signal:
<-45dBc of above of carrier frequency 88MHz, under 110MHz, <-35dBc, prep above 110MHz,
Carrier frequency arrives 1000MHz<-60dBc
The letter a confusion of voices of deviate 20kHz compares:
<-106dBc/Hz arrives 500MHz
<-100dBc/Hz arrives 1000MHz
Radio frequency leak: Be less than potential of 0.2 small bend over to fall
Protection: N: When retrorse power overload, REMOVE RF INPUT shows on the screen (eliminate radio frequency is inputted) . Hear the trumpet inside machine at the same time call the police sound.

BNC: Power input is more than 1 watt-hour, tripping operation circuit breaks a radio frequency automatically to input; REMOVE RF INPUT shows on the screen; Hear a trumpet call the police sound, retrorse power is protected most greatly 50 tile.

Modulation generator
Extent modulation
Successive wave limits: 1.5~400MHz, usable limits 400kHz~500MHz
Modulation depth range: 0~99%
Modulation frequency limits: 20Hz~20kHz
Resolution: 1%
Precision: ±7% installs ±1 digit, to frequency of modulation of 1 thousand conspicuous, modulation deepness is more than 85% ; ±10% installs ±1 digit, modulation frequency comes from 50Hz 5kHz, modulation deepness from 0 install ±1 digit to 70%; ±15% , modulation frequency comes from 50Hz 5 KHz, modulation deepness from 0 to 85% .
Amplitude modulation is inputted outside
Input impedance: 1MΩ(has about 40 slightly law capacitance) .
Successive wave limits: 1.5~400MHz.
Amplitude modulation limits: 0~99% .
Modulation frequency limits: 20Hz~20kHz.
Sensitivity: 50Hz comes 5kHz, amplitude modulation 70% less than; 1.5V peak value is corresponding 30% amplitude modulation: ±10%±1% amplitude modulation; 50Hz~15kHz, amplitude modulation 85% less than; 1.5V peak value is corresponding amplitude modulation of ±15%±1% of 30% amplitude modulation;
Amplitude modulation distortion factor: <2% distortion factor, 1kHz modulation frequency, 30% amplitude modulation, with 0.3~3.4kHz bandwidth
Frequency modulation
Successive wave limits: 0.4~1000MHz
Frequency slants limits: 0~25kHz
Modulation frequency limits: 20Hz~20kHz
Resolution: 25Hz(<6.25kHz frequency slants) , 100Hz(<25kHz frequency slants)
Precision: ) of ±7%±10Hz(1kHz modulation frequency, ±10%(50Hz~15kHz modulation frequency)
Frequency of transfer to other localities is inputted
Input impedance: 1MΩ
Successive wave limits: 0.4~1000MHz
Frequency slants limits: 0~30kHz frequency slants
Modulation frequency limits: 1Hz~50kHz
Sensitivity: Frequency of 5kHz of correspondence of 1V peak value slants ±10%
FM distortion factor: <1% distortion factor, 1kHz modulation frequency, 5kHz frequency slants, with 0.3~3.4kHz bandwidth
Phasic modulation
Successive wave limits: 0.4~1000MHz
Phasic deflection limits: 0~10 radian
Modulation frequency limits: 0.3~3.4kHz
Resolution: Radian of 0.025 paces class, <6.3 radian 0. Radian of 1 pace class, <6.3 radian indicates: 3 digit
Precision: ±8% , ±11% of 1kHz modulation frequency, 0.3~3.4kHz modulation frequency
Photograph of transfer to other localities is inputted
Input impedance: 1MΩ
Successive wave limits: 0.4~1000MHz
Phasic deflection limits: 0~10 radian
Modulation frequency limits: 0.3~3.4kHz
Sensitivity: 0.5V peak value is corresponding 5 radian ±12% , in 1kHz modulation frequency
Phase modulation distortion factor: <2% , 1kHz modulation frequency, have 5 radian phasic deflection, with 0.3~3. 4kHz bandwidth

Frequency generator
Shuang Yin moves: Have two frequency, appearance fastens controlled tone with n cent
Output impedance: <5Ω
Frequency
Input
Limits: 50Hz~15kHz, usable limits 10Hz~20kHz
Resolution: 0.1Hz comes from 10Hz 9.999kHz, 1Hz from 9.999 to 20kHz
Precision: ±0.01Hz, 10Hz~100Hz, 0.1Hz, 100Hz~20kHz
Appearance: Sine wave, square wave, trigonometry wave and toothed wave
Output electromotive force of n EMF(open a way)
Limits: 0.1mV~4.095V mean effective value (sine wave and square wave) 0.1mV~4.095V peak value (trigonometry wave and toothed wave)
Precision: ±5%±1 pace class, 50Hz~15kHz
Setting: 0.1mV pace class (class of 0.1~409.0mV) 1mV pace (409mV~4.095V)
Signal purity (sine wave)
Distortion factor: <0.5% , 1kHz modulation frequency, <1% , 50Hz~15kHz modulation frequency
Parasitism noise: <0.1mV mean effective value, with CCITT noise bandwidth
Dc slants buy: <10mV flows continuously

Shoot frequency frequency meter
Frequency
Span: 1.5~1000MHz
Resolution: 1Hz or 10Hz arrive 200MHz, 10Hz arrives from 200MHz 1000MHz
Precision: With inside frequency symptom is same ±1 word
Impedance: 50Ω is nominal value
Voltage standing wave compares:
N: <1.2:1To 500MHz <1.35:1To 1000MHz
BNC: <2.2:1To 1000MHz
Sensitivity: N: 5MW, choice catapult tests way. Choice sheet carries duplex operation kind, sensitivity falls to 20mW BNC: 50mV is usable

Radio frequency powermeter
Input impedance: As identical as radio frequency frequency meter
Voltage standing wave compares: As identical as radio frequency frequency meter
Span: N: Center of dainty of ⑸ Xi  wrings?50mW to 150mW, can use 5mW sheet to carry duplex operation kind, 100mW comes 150mW, can use labour means of 20mW Shuang Duanshuang, 50mW comes 100mW, can use 5mW BNC: 0.05mW comes 1.0W
Work continuously: 75W, 0~50 ℃
The biggest input:
N: Catapult tests way, 150W sheet carries duplex operation kind, pattern of 150W Shuang Duanshuang industry, 100W
BNC: 1.2W, job of tripping operation circuit is in 1W, overload protection amounts to 50W
Frequency limits: 1.5~1000MHz
Resolution: Span of 1% bar chart is indicated
Precision:
±10%±1 word, not when prep above 500MHz
±15%±1 word, not when prep above 960MHz
±20%±1 word, not when prep above 1000MHz,
±1.25dB±1 word > 5mW, frequency limits 825 to 905MHz

Modulation watch
Input
The hand moves tuning: Scandium of assorted of heart of natrium of archives of narrow of Qu of Mao ┢  touchs pleasant? 3 digit and decimally show, the directive is the biggest be worth or lose value error.
Automatic and harmonious: Mao ┎ puts in order fear carrying Bi Yun of  ⑼  Gan of  of remnant of old Gandeng heart pours? of β remnant  to make frequency and modulation
Sensitivity:
N: Catapult checks means 5mW(0.5V) sheet to carry 20mW(1V of duplex operation means)
BNC: 0.05mW(50mV)
Exploration time: The choice is less than 3 seconds when 10Hz resolution
Practicable frequency filter: Take- - 0.3~3.4kHz is low- - 0.3kHz or 15kHz
Filter channel receives outside: Will hind the demodulation signal of face plate electrical outlet is received outside receive filter to input, receive frequency of the face plate before coming to input socket by filter output again
Extent modulation
Successive wave span: 1.5~400MHz
Amplitude modulation span: 0~90% , under 100MHz 0~80% , 100~400MHz, the hand moves harmonious condition to be able to use span of 100% automatic changeover (bar chart) , 0~10, 0~30, 0~100% amplitude modulation
Modulation frequency span: 50Hz~10kHz, 10Hz~15kHz is usable
Resolution: 1% amplitude modulation
Precision:
±5% reading ±1 word, 1kHz modulation frequency
±8.5% reading ±1 word, 50Hz~10kHz
Demodulation distortion factor: When?0% amplitude modulation and 1kHz modulation frequency, with 0.3 connect to 3.4kHz belt; <2% , carrier frequency not under 21MHz, <5% , carrier frequency under 21MHz,
Parasitism amplitude modulation: <1% , with 0.3 connect to 3.4kHz belt, the input is more than 10mW(N model) or 0.1mW(BNC) frequency modulation
Successive wave span: 1.5~1000MHz
Frequency slants span: 0~25kHz
Automatic changeover span (bar chart) , 0~1, 0~3, 0~10, 0~30kHz
Modulation frequency
Span: 50Hz~10kHz, usable span 10Hz~15kHz
Resolution: 10Hz frequency slants to not be more than 2.5kHz, 1% frequency slant to not be more than 25kHz
Precision: ±5%±1 word, ±7.5%±1 of 1kHz modulation frequency word, 50Hz~10kHz limits
Demodulation distortion factor: <1.5% distortion factor, 5kHz frequency, 1kHz modulation frequency, connect filter with 0.3~3.4kHz belt
Parasitism frequency modulation: <30Hz mean effective value, not mean effective value of prep above 500MHz <60Hz, not prep above 1000MHz is connected with 0.3~3.4kHz belt, the input is more than 20mW(N model) or 0. 2mW(BNC)
Phasic modulation
Successive wave span: 1.5~1000MHz
Phasic deflection span: 0~10 radian
Modulation frequency span: 0.3~3.4kHz
Resolution: 1% or 0.01 radian
Precision: ±5%±1 word, ±7.5%±1 of 1kHz modulation frequency word, 0.3~3.4kHz modulation frequency, go accentuating with 750μs

Noise and distortion factor are expressed
Letter offer (SINAD)
Frequency: 1kHz
Span: 0~18dB, 0~50dB
Resolution: 0.1dB
Precision: ±1dB
Sensitivity: 50mV(100mV corresponding 40dB believes accept test)
Distortion factor (DISTORTION)
Frequency: 1kHz
Span: 0~10% , 0~30% distortion factor
Resolution: 0.1% distortion factor
Precision: Distortion factor of ±5% reading ±0.5%
Sensitivity: 1% distortion factor check 50mV(100mV correspondence) letter a confusion of voices is compared (S/N)
Span: 0~30dB, 0~100dB
Resolution: 0.1dB
Precision: ±1dB
Sensitivity: 50mV(100mV corresponding 40dB believes a confusion of voices to compare a test)

Frequency frequency meter
Span: 20Hz~20kHz
Resolution: 0.1Hz or 1Hz
Precision: With inside frequency symptom is same ±1 word, ±0.1Hz or 0.02%
Sensitivity: 50mV