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Specifications
These specifications for the E1538A reflect its performance while installed on your VXI module.
General Specifications
Output Characteristics | Characteristic | ||
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| current source (logic 1) | 0 | .38mA @ 1.2V |
| current sink (logic 0) | 100 mA | 100 mA |
| Voltage (logic 1) | 0 | 5V (no load) |
| Voltage (logic 0) | 0.5 Max sinking 100mA | 0.5 Max sinking 100mA |
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| 0.1 Max sinking 20mA | 0.1 Max sinking 20mA |
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Input Characteristics | Characteristic | ||
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(VRS OFF for Chs0&1) | Equivalent circuit | 120K conn. to 0 Volts | 9.2KΩ conn. to 4.6 Volts |
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| Maximum input low | programmable from | programmable from |
| Minimum input high | ||
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Input Isolation | No Isolation Provided |
Cross-Talk Between Channels
A large signal on one channel has an effect on the accuracy of frequency measured on other channels as follows:
No degradation of specification | |
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No degradation of specification | |
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Minimum input amplitude changes from 15mV | |
70Vpp | to 18mV for frequency range of 1Hz to 10Khz |
| (see Input Signal Characteristics spec.) |
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Maximum voltage applied to any | |
input terminal |
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Maximum voltage applied to any output terminal
0 - 48 Volts (outputs are diode clamped at