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Racal 9008A modulation meter

Discussion in 'Electronic Equipment' started by Ed, Feb 23, 2007.

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  1. Ed

    Ed Guest

    Hi,

    Does anyone know where I can find an operation manual/specifications for the
    Racal Dana 9008A modulation meter.

    I have just got one of these and it works fine, however I dont know what its
    operation ranges are, and basically dont know anything about it!

    Cheers,
     
  2. Ed

    Ed Guest


    No one know anything about these? :)
     
  3. Black_Swan

    Black_Swan

    1
    0
    Mar 19, 2009
    Hi there. It is an old post. I hope this is helpfull.

    Input characteristics:
    Frequency range: 1.5 MHz to 2 GHz
    Input level;
    Low input:
    5 to 100 mV r.m.s. up to 500 MHz
    10 to 150 mV r.m.s. from 500 MHz to 1 GHz
    20 to 150 mV r.m.s. from 1 GHz to 2 GHz
    High input:
    50 mV to 1V r.m.s. up to 500 MHz
    150 mV to 1V r.m.s from 500 MHz to 2 GHz
    Level setting;
    Fully automatic
    Input impedance;
    50 Ohm nominal

    FM Measurement
    Deviation ranges;
    1.5, 3, 5, 10, 15,30, 50, and 100 kHz peak deaviation f.s.d. Measurements of positive, negative and mean deviation can be made.
    Modulation frequency range;
    50 Hz to 30 kHz
    Accuracy;
    ± 2% of f.s.d. ±1% of reading at 1 kHz
    Frequency response;
    (1) ±0.2 dB with respect to 1 kHz from 300 Hz to 3 kHz
    (2) ±0.5 dB with respect to 1 kHz from 50 Hz to 10 kHz falling by a further 0.3 dB at 30 kHz.
    Residual f.m. noise;
    -52 dB with respect to 10 kHz peak deviation measured on the AF output, with the 3 kHz filter in, at carrier frequencies up to 250 MHz then increasing at 6 dB per octave above this frequency.
    AM rejection;
    Additional deviation error is less than 250 Hz with an a.m. depth of up to 80% and a modulating frequency in the range 300 Hz to 3 kHz.

    AM Measurement
    Modulation depth ranges;
    5, 10, 15, 30, 100% f.s.d. modulation depth. Measurements of peak, through or mean amplitude relative to carrier may be measured.
    Modulation frequency;
    50 Hz to 30 kHz
    Accuracy;
    ±2% of f.s.d. ±1% of reading at 1 kHz.
    Frequency response;
    (1) ±0.2 dB with respect to 1 kHz from 300 Hz to 3 kHz
    (2) ±0.5 dB with respect to 1 kHz from 50 Hz to 10 kHz falling by a further 0.3 dB at 30 kHz
    Residual a.m.;
    Less than 1% for inputs greater than 10 mV r.m.s.

    IF Output
    Frequency;
    430 kHz nominal.
    Level;
    100 mV r.m.s. e.m.f. ±2 dB
    Output impedance;
    600 Ohm nominal

    AF Output
    Response;
    (1) Normal: ±0.5 dB over the frequency range 50 Hz to 30 kHz.
    (2) Filter in: 300 Hz to 3 kHz at 3 dB points.
    Level;
    1V r.m.s. e.m.f. ±2 dB (meter f.s.d. 10 scale)
    200 mV r.m.s. in Serial Numbers 1751-2000
    Ouput impedance;
    600 Ohm nominal.
    Harmonic distortion;
    FM: Less than 0.5% for f.m. deviations up to 100 kHz
    AM: Less than 1%, typically 0.5% for a.m. depths up to 80%

    DC Output
    Level;
    1V e.m.f. ±0.5 dB at meter f.s.d. (10 scale)
    Output impedance;
    10kOhm nominal.

    Give me some kind of feedback, ok?
     
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