| Electronic Test Instruments
- Signal / Sweep Generator |
| S-900 AM/FM Signal Generator |
 |
| - |
100KHz - 55MHz
useable upto 110MHz
(2nd Harmonic) |
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| - |
Frequency Counter, 55MHz |
| - |
TTL Output |
| - |
Low radiation |
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S-900 AM/FM Signal Generator is a low cost equipment ideally
suited for Education and Service applications, it comprises of the
following.
AM/FM Signal Generator, which generates frequencies from 100KHz
to 55MHz in 6 bands. The second harmonic of the last band generates
frequencies upto 110MHz.
Frequency Counter which measures frequency of the AM/FM and External
input.
TTL Output is available at the frequency readout on the counter.
TTL output can be used to drive various circuits during experimentation.
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Characteristics |
AM OSCILLATOR
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| Frequency Range: |
|
| 1) 100KHz - 300KHz |
|
| 2) 300KHz - 1MHz |
|
| 3) 1MHz - 3MHz |
|
| 4) 3MHz - 10MHz |
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| 5) 10MHz - 25MHz |
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| 6) 25MHz - 55MHz |
|
| continuously variable over the
whole range with a coarse and fine variable |
| |
|
| Modulation Frequency |
400Hz approx |
| Modulation depth |
a) Internal Modulation 30% (electronically
adjusted |
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b) External Modulation - adjustable. |
| Output Amplitude |
100mV p-p +2dB into 75 ohms, corresponding
to a carrier voltage of 27mV rms approx |
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|
| FM OSCILLATOR |
|
| 3MHz - 10MHz |
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| 10MHz - 25MHz |
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| 25MHz - 55MHz |
|
| 80MHz - 110MHz (2nd harmonic
of band 6) |
| continuously variable over the
whole range with a coarse and fine variable |
| Modulation Frequency |
400 Hz approx |
| Frequency Deviation |
a) Internal - adjustable 0-22.5KHz from 5MHz
to 55MHz |
| |
b) External - adjustable 0-40KHz from 3MHz
to 55MHz for Audio input frequency range 300Hz to 5KHz and a
max input of 8V p-p |
| Output Amplitude |
75mV p-p +2dB into 75 ohms |
| Attenuation - |
a) Step Attenuator 5 steps (20dB) each |
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b) Variable attenuator |
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|
| FREQUENCY COUNTER |
| Readout |
5 digit LED display |
| Range Selection |
MHz/KHz/Hz |
| Time Base |
10MHz Xtal derived |
| Source Selection |
a) Internal AM |
| |
b) Internal FM |
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c) External frequency |
| External Input |
10Hz to 55MHz |
| Sensitivity |
20mV rms at 1KHz |
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|
| TTL OUTPUT |
| Output Voltage |
TTL Level approx when terminated in 75ohms,
abberations may exceed 40% |
| Frequency Range |
100KHz to 55MHz |
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|
| GENERAL |
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| Mains Voltage |
230V +10%, 50Hz |
| Dimensions |
378 (W),144 (H),190 (D) |
| Accesories |
Operating Manual, Cable |
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Remarks: All accuracies specified at 25deg C ambient, 230V mains,
50Hz with instrument grounded - after warmup of 30 min. Specifications,
illustrations and price change privileges reserved. |
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