slice:dhv
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slice:dhv [2021/04/05 23:26] – [Setting the Modulation Mode] Michael Radunsky | slice:dhv [2022/03/15 20:41] – external edit 127.0.0.1 | ||
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====== SLICE-DHV Dual-Channel High-Voltage Amplifier ====== | ====== SLICE-DHV Dual-Channel High-Voltage Amplifier ====== | ||
- | <WRAP center round box>The SLICE-DHV is a low-noise, high-bandwidth, | + | <WRAP center round box>The SLICE-DHV is a low-noise, high-bandwidth, |
- | + | ||
- | The SLICE-DHV features two modulation modes: a unity-gain mode and a full-range mode. The unity gain mode has a 1x voltage gain with a limited operating range of ±10V (-10 V to +10 V input) that is centered around a user-settable DC bias voltage. The full range mode has a 20x voltage gain that operates over the entire 200 V range (0 V to 10 V input). The unity gain mode has better noise performance than the full range mode. | + | |
+ | The SLICE-DHV features two Gain values: G=1 and G=20 for the input modulation signal. When G is set to 1, the output range is limited to ±10V from the user-settable DC bias voltage. When the Gain is set to 20, the modulation input signal allows access to the full range of the SLICE-DHV (0-200 V). When the Gain is set to 1, the SLICE-DHV has better noise performance than when the Gain is set to 20.\\ | ||
The SLICE-DHV is not recommended for applications that require a large-signal bandwidth greater than 20 Hz, defined for modulation amplitudes more than 10 V. | The SLICE-DHV is not recommended for applications that require a large-signal bandwidth greater than 20 Hz, defined for modulation amplitudes more than 10 V. | ||
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| Control Interfaces | | Control Interfaces | ||
| Output Voltage Range | 0-200 V | | | Output Voltage Range | 0-200 V | | ||
- | | Modulation Modes | + | | Gain Ranges |
^ Modulation Gains || | ^ Modulation Gains || | ||
- | |Unity Gain Mode \\ Full Range Mode | 1 V/V \\ 20 V/V | | + | |Unity Gain \\ Full Range |
^ Bandwidth | ^ Bandwidth | ||
|Small Signal\\ Large Signal | |Small Signal\\ Large Signal | ||
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| Output Current | | Output Current | ||
| Modulation Input Voltage Range | ±10 V((see note in <tabref no_neg> | | Modulation Input Voltage Range | ±10 V((see note in <tabref no_neg> | ||
- | | Voltage Noise | + | | Voltage Noise |
| Accuracy | | Accuracy | ||
| Drift | | Drift | ||
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< | < | ||
+ | ====Choosing Currint Limited or Full Bandwidth==== | ||
+ | On newer models of the SLICE-DHV, a feature was added which allows the user to switch the Modulation Mode of their unit between Current Limited, and Full Bandwidth. These two modes control the amount of drive current which can be sent through the output op-amp to modulate the load attached to HV out. In Full Bandwidth mode, the current through the op-amp is not limited, giving the SLICE-DHV a larger modulation bandwidth. The drawback, however, is that the output op-amp will occasionally go into thermal shutdown, or show distortions when driven especially hard, or with larger loads. In Current Limited mode, the output op-amp is throttled slightly to prevent the thermal shutdown and distortions seen in Full Bandwidth mode. However, using Current Limited mode slightly reduces the overall bandwidth of the system. | ||
+ | |||
+ | It is recommended to use the Full Bandwidth modulation mode if in the small signal regime (G=1 output mode, < 20 Vpp modulation), | ||
==== Setting the Voltage Limit ==== | ==== Setting the Voltage Limit ==== | ||
The user can set the maximum voltage output on a given channel so as not to exceed the rated maximum for their device. | The user can set the maximum voltage output on a given channel so as not to exceed the rated maximum for their device. | ||
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==== Modulating the SLICE-DHV Output ==== | ==== Modulating the SLICE-DHV Output ==== | ||
- | The user can input an analog voltage signal to control the output of the SLICE-DHV. Before introducing a modulation signal, make sure you have selected the [[slice: | + | The user can input an analog voltage signal to control the output of the SLICE-DHV. Before introducing a modulation signal, make sure you have selected the [[slice: |
The default modulation input port is the SMA connector on the rear panel (bubble 3, <imgref back> | The default modulation input port is the SMA connector on the rear panel (bubble 3, <imgref back> | ||
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Change the input impedance of the two front-panel input ports. | Change the input impedance of the two front-panel input ports. | ||
- | === SLICE Firmware === | ||
- | From time to time, Vescent will upgrade the firmware for controlling the SLICE-DCC. | ||
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It is possible to control the SLICE-DHV through serial commands. | It is possible to control the SLICE-DHV through serial commands. | ||
- | Please contact [[[email protected]|sales [at] vescent [dot] com]] for information. | ||
+ | <WRAP round important 100%> | ||
+ | Upgrading the SLICE-DHV firmware is not always necessary to use the Serial API. Check your installed firmware version in the settings menu against the most recent firmware version given [[https:// | ||
+ | </ | ||
+ | |||
+ | |||
+ | Please contact [[[email protected]|sales [at] vescent [dot] com]] for information. | ||
===== Maintenance ===== | ===== Maintenance ===== | ||
There are no user-serviceable parts inside this instrument. Refer all repairs to the manufacturer. | There are no user-serviceable parts inside this instrument. Refer all repairs to the manufacturer. |
slice/dhv.txt · Last modified: 2024/04/09 21:54 by Thomas Bersano