Description:
The EB-OSD-232+™ evaluation board accelerates the evaluation of the OSD-232+ on-screen composite video character and graphic overlay module. The EB-OSD-232+™ includes an on-board 28 pin DIP socket, 5 volt regulator, DC power jack, power switch, power status LED, dip switches, female DB-9 RS-232 serial jack, and for future enhancements momentary push buttons and I2C eeprom socket.
The EB-OSD-232+™ evaluation board also includes a Windows PC based demonstration utility for the OSD-232+™, 6’ PC RS-232 serial cable, and wall power supply.
Specifications:
- Dimensions: 3.00" L x 3.94” W x .7" H
- Weight: 2.1 oz. (with OSD-232+™ module installed)
- Input voltage: 7.0 to 14.0 volts DC (200 ma max)
- DC connector: 2.1 mm x 5.5 mm, center tip positive
- Video connectors: RCA
- RS-232 connector: Female DB-9
- Pin 2 - OSD-232+™ serial out
- Pin 3 - OSD-232+™ serial in
- Pin 5 - Ground
- RS-232 serial or TTL input: 9,600 or 19,200 baud, 8 data bits, 1 stop bit, inverted data
- Operating temperature: -40C to +85C (extended temperature range standard)
OSD-232+™ Installation
It is very important the OSD-232+™ module is inserted into the 28 pin DIP socket of the EB-OSD-232+™ board in the proper orientation. Pin 1 of the OSD-232+™ module is near the white square on the top left corner of the board. Pin 1 of the EB-OSD-232+™ 28 pin DIP socket is indicated with a notch on the top of the socket.
Dip Switches:
DIP switch inputs are only checked during power-up.
DIP # |
Description |
1 |
RS-232 baud rate
OFF = 9,600 baud
ON = 19,200 baud |
2 |
NTSC or PAL video format
OFF = NTSC
ON = PAL |
3 |
Display font screen
OFF = Do nothing
ON = Display font screen |
4 |
Firmware flash update
OFF = Do nothing
ON = Enter OSD-232+™ firmware flash update |
Jumpers:
All OSD-232+™ jumper pins are TTL levels (0 and +5 VDC)
Jumper: JP5
Pin # |
OSD-232+™ Input / Output |
Label |
Description |
1 |
Output |
CTS |
RS-232 clear to send (future enhancement) |
2 |
N/A |
GND |
RS-232 ground |
3 |
Input |
RTS |
RS-232 request to send (future enhancement) |
Jumper: JP6
Reserved (pins 1 - 6)
Jumper: JP7
Pin # |
OSD-232+™ Input / Output |
Label |
Description |
1 |
Input + Output |
GPIO 0 |
General purpose I/O (future enhancement) |
2 |
Input + Output |
GPIO 1 |
General purpose I/O (future enhancement) |
3 |
N/A |
GND |
Ground |
4 |
Output |
VSYNC |
Vertical sync output of video input
Low = video vertical sync interval
High = not video vertical sync interval |
5 |
Output |
HSYNC |
Horizontal sync output of video input
Low = video horizontal sync interval
High = not video horizontal sync interval |
6 |
Output |
LOS |
Loss of sync of video input
Low = video present on input
High = no video present on input |
Schematic:
Trouble Shooting Tips:
Problem |
Solution |
Green LED off (unit won’t power up) |
- Verify power supply output is 7.0 to 14.0 volts DC when attached
- Verify the 250ma internal fuse is good
|
Garbage characters on screen or text not displayed |
- Verify using correct RS-232 com port on PC
- Verify communication baud rate 9,600 or 19,200
- Enable DIP 3 to generate the font test screen
- Use the supplied PC demonstration utility to verify the unit is working properly
|
Warranty & Service:
If the product fails to perform as described in our product description or specification, within 1 year from the date of shipment to the buyer, we will repair or replace the product and/or accessories originally supplied. Failure due to improper installation, misuse, abuse or accident is not covered by this warranty. Incidental and consequential damages are not covered by this warranty. The buyer must first obtain a Return Material Authorization number by calling (248) 588-4400, or send email to support@icircuits.com. Ship the defective product (with RMA number) to Intuitive Circuits, 3928 Wardlow Ct., Troy, MI 48083, freight prepaid.
|
