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7A13: Difference between revisions
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In addition, this voltage is brought out through a front panel connector so it can be measured externally. | In addition, this voltage is brought out through a front panel connector so it can be measured externally. | ||
In differential mode, a | In differential mode, a ±10 V common mode signal can be present at the inputs without attenuation. | ||
Either input can be switched to the comparison voltage, | Either input can be switched to the comparison voltage, | ||
which is settable to four digits by a 10-step switch and a 10-turn potentiometer. | which is settable to four digits by a 10-step switch and a 10-turn potentiometer. | ||
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{{Spec | Rise time | 3.5 ns }} | {{Spec | Rise time | 3.5 ns }} | ||
{{Spec | Deflection factor | 1 mV/Div – 5 V/Div (1–2–5 sequence) }} | {{Spec | Deflection factor | 1 mV/Div – 5 V/Div (1–2–5 sequence) }} | ||
{{Spec | Common Mode range | at least +10 V / | {{Spec | Common Mode range | at least +10 V / −10 V from 1 mV/Div to 5 mV/Div, +100 V / −100 V from 10 mV/Div to 50 mV/Div, +500 V / −500 V from 100 mV/Div to 5 V/Div }} | ||
{{Spec | Overdrive Recovery | to within 2 mV in 1µs (at 1 mV/Div) }} | {{Spec | Overdrive Recovery | to within 2 mV in 1µs (at 1 mV/Div) }} | ||
{{Spec | CMRR | at least 10,000:1 for 10 V<sub>p-p</sub> or less, 100 kHz to 1 MHz, decreasing to 500:1 at 10 MHz with 1 V<sub>p-p</sub>, 200:1 at 20 MHz with 1 V<sub>p-p</sub> }} | {{Spec | CMRR | at least 10,000:1 for 10 V<sub>p-p</sub> or less, 100 kHz to 1 MHz, decreasing to 500:1 at 10 MHz with 1 V<sub>p-p</sub>, 200:1 at 20 MHz with 1 V<sub>p-p</sub> }} | ||
{{Spec | Input impedance | 1 MΩ // 20 pF }} | {{Spec | Input impedance | 1 MΩ // 20 pF }} | ||
{{Spec | Comparison voltage | | {{Spec | Comparison voltage | −10 V to +10 V }} | ||
{{Spec | Vc reading accuracy | | {{Spec | Vc reading accuracy | | ||
Mechanical version: 0.1% of reading + 5 mV | Mechanical version: 0.1% of reading + 5 mV | ||
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The power consumption of a 7A13 was measured to be: | The power consumption of a 7A13 was measured to be: | ||
* +50 V: 75 mA | * +50 V: 75 mA | ||
* | * −50 V: 66 mA | ||
* +15 V: 238 mA | * +15 V: 238 mA | ||
* | * −15 V: 204 mA | ||
* +5 V (logic): 279 mA | * +5 V (logic): 279 mA | ||
* +5 V (lights): 228 mA | * +5 V (lights): 228 mA | ||
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The plug-in can still be used when the counter fails, by using an | The plug-in can still be used when the counter fails, by using an | ||
external voltmeter to monitor the comparison voltage, V<sub>c</sub>. | external voltmeter to monitor the comparison voltage, V<sub>c</sub>. | ||
Later 7A13 plug-ins use an LED readout instead of the mechanical counter. | Later 7A13 plug-ins use an LED readout instead of the mechanical counter. | ||
The LED readout is much less problematic. | The LED readout is much less problematic. | ||