Racal 9008A modulation meter

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.

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