Difference between revisions of "SCF-2"
Jump to navigation
Jump to search
Blwikiadmin (talk | contribs) (→J3) |
Blwikiadmin (talk | contribs) |
||
| (15 intermediate revisions by the same user not shown) | |||
| Line 8: | Line 8: | ||
* Schottky Clamping Diodes | * Schottky Clamping Diodes | ||
* Filter cap | * Filter cap | ||
| + | * Ring pin brought to connector | ||
| + | ** Ring pin is not used in Synth applications | ||
| + | ** Card can be used as a 3.5mm breakout | ||
* (2) 4-40 mounting holes | * (2) 4-40 mounting holes | ||
| + | |||
| + | === Schematic === | ||
| + | |||
| + | [[file:SCF-2_Channel_Schematic.PNG]] | ||
| + | |||
| + | ==== Used as Digital Input ==== | ||
| + | |||
| + | * 550K input impedance presents light load | ||
| + | * R1/R3 - Input scale resistors | ||
| + | ** Ex: 5.0V control voltage to 3.0 V | ||
| + | * Clipping diodes protect inputs | ||
| + | * R1/C1 create input filter = 2.2mS = 454 Hz | ||
| + | |||
| + | ==== Used as Digital Output ==== | ||
| + | |||
| + | * Drive with 5V low output impedance source | ||
| + | * DNP R3, C1 | ||
| + | * Use lower value for R1 (typically 200 Ohms, etc) | ||
| + | * Can leave Clipping Diodes to protect driver | ||
== Connectors == | == Connectors == | ||
| − | === | + | === J1, J2 - 3.5mm Jacks === |
* Tip | * Tip | ||
| Line 19: | Line 41: | ||
=== J3 - I/O Connector === | === J3 - I/O Connector === | ||
| − | * | + | * 2x4 Header, 0.1" |
| + | |||
| + | [[FILE:SCF-2_J3.PNG]] | ||
| + | |||
* Pinout | * Pinout | ||
| Line 25: | Line 50: | ||
# VCC | # VCC | ||
# VP1 - Tip J1 | # VP1 - Tip J1 | ||
| − | # | + | # VR1 - Ring J1 (not used in Synth applications) |
# VP2 - Tip J2 | # VP2 - Tip J2 | ||
| − | # | + | # VR2 - Ring J2 (not used in Synth applications) |
# GND | # GND | ||
# GND | # GND | ||
Revision as of 08:24, 25 September 2022
Contents
Features
- Digital Inputs or Outputs
- (2) 3.5mm Jacks
- Scaling resistors
- Schottky Clamping Diodes
- Filter cap
- Ring pin brought to connector
- Ring pin is not used in Synth applications
- Card can be used as a 3.5mm breakout
- (2) 4-40 mounting holes
Schematic
Used as Digital Input
- 550K input impedance presents light load
- R1/R3 - Input scale resistors
- Ex: 5.0V control voltage to 3.0 V
- Clipping diodes protect inputs
- R1/C1 create input filter = 2.2mS = 454 Hz
Used as Digital Output
- Drive with 5V low output impedance source
- DNP R3, C1
- Use lower value for R1 (typically 200 Ohms, etc)
- Can leave Clipping Diodes to protect driver
Connectors
J1, J2 - 3.5mm Jacks
- Tip
- Sleeve
J3 - I/O Connector
- 2x4 Header, 0.1"
- Pinout
- VCC
- VCC
- VP1 - Tip J1
- VR1 - Ring J1 (not used in Synth applications)
- VP2 - Tip J2
- VR2 - Ring J2 (not used in Synth applications)
- GND
- GND
