Calibration Control | The Calibration Control Register sets and reports calibration conditions. |
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| Bit | 15 | 14 |
| 13 | 12 | 11 | 10 | 09 | 08 | 07 | 06 | 05 | 04 |
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| 02 | 01 |
| 00 |
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Address | READ | Cal | A/D |
| Cal Mode | Cal Mux | Cal Mux Chan |
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| Bus En | Bsy |
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| En |
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Base + 0816 |
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| WRITE | Cal | A/D |
| Cal Mode | Cal Mux | Cal Mux Chan | A/D |
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| Unused |
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| Bus En | Trg |
| Sel | En |
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| Scale |
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READ Cal Bus En: A one (1) in this field indicates the cal bus is connected. A zero (0) in this field indicates the cal bus is not connected. This bit reflects the state of the last write to Cal Bus En field.
A/D Bsy: A one (1) in this field indicates the A/D is taking a reading. A zero (0) in this field indicates a new reading is available.
Cal Mode: A one (1) in this field indicates the calibration system is set to calibrate voltage. A zero (0) in this field indicates the calibration system is set to calibrate current. This bit reflects the state of the last write to Cal Mode Sel field.
Cal Mux En: A one (1) in this field indicates the Cal Mux is enabled. A zero (0) in this field indicates the Cal Mux is disabled
Cal Mux Chan Address: This field returns the channel selected for calibration. This bit reflects the state of the last write to Cal Mux Chan Address field. The channel address, expressed in hexadecimal, has values from 016 through F16 corresponding to channels 1 through 16, respectively.
A/D Reading Value: This field returns the latest reading taken by the A/D. When A/D Scale is set to 0, the actual voltage represented by the reading value is given as:
Voltage = 16.8 V − | 33.6 V | ∗ AD Reading Value | |
255 steps | |||
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When A/D Scale is set to 1, the actual voltage represented by the reading value is given as:
Voltage = 16.8 V − | 33.6 V | ∗ | AD Reading Value |
255 steps |
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| 13.7 | ||
WRITE Cal Bus En: Writing a one (1) in this field connects the cal bus. Writing a zero (0) in this field disconnects the cal bus.
A/D Trg: Writing a one (1) in this field begins an A/D reading. Writing a zero
(0)in this field during a reading in progress will corrupt the reading. Do not combine this bit setting with other bits in this register (write only this bit).
Appendix B | HP E1418A |
