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Digital control board documentation (view source)
Revision as of 17:39, 11 June 2009
, 17:39, 11 June 2009initial
This documentation covers the most important things to know while testing the digital control board, including component pinouts, nets, and other information.
== Power Requirements ==
=== Required Voltages ===
All components on the digital board '''except the DAC''' can be tested using only a +5V source. The DAC requires +5V, -5V, and a high voltage corresponding to 10V higher than the maximum desired DAC output voltage. Digital and analog grounds must be connected as well before any testing takes place.
=== Power Pins ===
Power shall be connected to the board as follows:
{| cellpadding=3 border=1 |
| '''Voltage'''
| '''Eurocard Pin'''
|-
| DGND
| A6
|-
| AGND
| A5
|-
| +5V
| A4
|-
| -5V
| A3
|-
| High voltage<br>(DAC max out +10,<br>'''not to exceed +210V''')
| A2
|}
=== Power Sequencing ===
The control board is designed such that voltages may be supplied in any order so long as the grounds are connected properly. However, for initial testing, the preferred order for powering up the board should be as follows:
# Ensure AGND/DGND are connected/grounded
# +5V
# -5V
# High voltage
== Power Requirements ==
=== Required Voltages ===
All components on the digital board '''except the DAC''' can be tested using only a +5V source. The DAC requires +5V, -5V, and a high voltage corresponding to 10V higher than the maximum desired DAC output voltage. Digital and analog grounds must be connected as well before any testing takes place.
=== Power Pins ===
Power shall be connected to the board as follows:
{| cellpadding=3 border=1 |
| '''Voltage'''
| '''Eurocard Pin'''
|-
| DGND
| A6
|-
| AGND
| A5
|-
| +5V
| A4
|-
| -5V
| A3
|-
| High voltage<br>(DAC max out +10,<br>'''not to exceed +210V''')
| A2
|}
=== Power Sequencing ===
The control board is designed such that voltages may be supplied in any order so long as the grounds are connected properly. However, for initial testing, the preferred order for powering up the board should be as follows:
# Ensure AGND/DGND are connected/grounded
# +5V
# -5V
# High voltage