A7435
12/24 Channel, 3.5 kV, 3.5/0,35 mA (9W) Common Floating Return Dual Range Boards
Features
- 12/24 independently controllable High Voltage channels
- 3.5 kV output voltage (9 W)
- Dual range current:
- High Power: 3.5 mA (10 nA Current monitor resolution)
- High resolution: 350 µA (1 nA Current monitor resolution)
- Available with either positive or negative polarity
- Radiall 52 pin or SHV coaxial connectors
- Common floating return shared by all channels
- Low ripple
- Under/over-voltage alert, overcurrent and max. voltage protection
- Interlock logic for unit enable
- Software Tool for easy channel management
Overview
The power supplies of the A7435 family house 24 or 12 independent high voltage channels. The A7435 is available in different versions equipped with SHV or with Radiall Multipin connector.
|
Radiall multipin connector
Single width (5 TE wide), 24 channel for Mod.A7435N, A7435P |
|
SHV connector
Single width (5 TE wide), 12 channel for Mod.A7435DP, A7435DN |
Consult our connectors reference page for technical information.
The channels share a Common Floating Return, which allows on-detector grounding, reducing the noise level. The board is available with either positive or negative output polarity.
The output voltage range is 0 ÷ 3.5 kV, with 5 mV of set and monitor resolution. The output channels offer dual current ranges (software selectable):
| High Power: | 0 ÷ 3.5 mA | I set resolution: 10 nA | I mon resolution: 10 nA |
| High Resolution: | 0 ÷ 350 μA | I set resolution: 10 nA | I mon resolution: 1 nA |
Independently programmable for each channel:
| Output voltage | 0 ÷ 3.5 kV | step: 5 mV |
| Current limit (Iset) | 0 ÷ 3.5 mA | step: 10 nA |
| V Ramp up/down: | 1 ÷ 500 V/sec | step: 1 V/sec |
| TRIP parameter | 0 ÷ 999.9 s; 1000 s = Infinite | step: 0.1 s |
Safety features allows the module to perform as a current generator and includes:
| Channels | can be enabled or disabled through the Global Interlock logic. |
| Overvoltage and Undervoltage warning | when the output voltage differs from the programmed value. |
| Overcurrent detection | when a channel attempts to exceed the programmed current limit, it signalled to be in “overcurrent” and enter in a TRIP status. The output voltage is varied to keep the current below the programmed limit for a programmable TRIP time, then the channel is switched off. If TRIP is set to “constant current mode”, the channel behaves like a current generator. |
| Hardware VMAX and IMAX | maximum output voltage and maximum current value can be fixed, via front panel potentiometer, at the same common value for all the board channels. IMAX and VMAX values can be read out via software. |
| Safety Board Interlock | this protection disables the HV generation when the HV outputs are not connected to their loads (only for Multipin Connector versions). |
For boards with Radiall 52 pin connector are available the following accessories:
Technical Specifications
- No. of Channels
12 or 24 (Common Floating Return)
- Output Voltage
0÷3.5 kV
- Polarity
Positive / Negative depending on purchased version
- Max. Output Current
Dual range:
- High Power: 3.5 mA
- High Resolution: 350 µA
- Voltage Set Resolution
5 mV
- Voltage Monitor Resolution
5 mV
- Current Set Resolution
10 nA
- Current Monitor Resolution
High Power: 10 nA
High Resolution: 1 nA
- VMAX hardware
0÷3.5 kV common for all the board channels
- VMAX hardware accuracy
± 1% of FSR
- VMAX software
0÷3.5 kV settable for each channel
- VMAX software resolution
1 V
- IMAX hardware
0÷3.5 mA common for all the board channels
- IMAX hardware accuracy
± 1% of FSR
- Ramp Up/Down
1÷500 Volt/sec, 1 Volt/sec step settable for each channel
- Voltage Ripple
10 ÷ 1000 Hz: < 7 mVpp (typ); < 15 mVpp (max)
1 ÷ 20000 kHz: <7 mVpp (typ); < 10 mVpp (max)
- Voltage Monitor vs. Output Voltage Accuracy
±0.01% of reading ± 0.03% of Max Output Voltage
- Voltage Set vs. Output Voltage Accuracy
±0.01% of setting ± 0.03% of Max Output Voltage
- Current Monitor vs. Output Current Accuracy
High Power: ± 0.02% ± 5 µA
High Resolution: ± 0.02% ± 1 µA
- Current Set vs. Output Current Accuracy
- High Power: ± 0.02% ± 5 µA
- High Resolution: ± 0.02% ± 1 µA
- Maximum output power
9 W per channel (software safety limit)
- Consumption @ full power
24 channels (A7435, A7435S): 300 W
12 channels (A7435D): 155 W
Compare
Compare with High Voltage Power Supply.
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Ordering Options
| Code | Description |
|---|---|
| WA7435NXAAA2 | A7435N - SYx527 H.V. channels -3.5kV 3.5mA (9W) - Multipin Conn. common floating (24 ch) RoHS |
| WA7435PXAAA2 | A7435P - SYx527 H.V. channels +3.5kV 3.5mA (9W) - Multipin Conn. common floating (24 ch) RoHS |
| WA7435SNXAA2 | A7435SN - SYx527 H.V. channels -3.5kV 3.5mA (9W) - SHV Conn. common floating (24 ch,10TE) RoHS |
| WA7435SPXAA2 | A7435SP - SYx527 H.V. channels +3.5kV 3.5mA (9W) - SHV Conn. common floating (24 ch,10TE) RoHS |
| WA7435DNXAA1 | A7435DN - SYx527 H.V. channels -3.5kV 3.5mA (9W) - SHV Conn. common floating (12 ch) RoHS |
| WA7435DPXAA1 | A7435DP - SYx527 H.V. channels +3.5kV 3.5mA (9W) - SHV Conn. common floating (12 ch) RoHS |