Overview
Power Supply
This unit has an internal switching supply that isolates supply power from the internal power and
I/O. Units will operate correctly when powered by 10-32 VDC. The unit is equipped with full
wave rectification, so power may be applied between Pins 1 & 2 using either polarity.
Package
The package for this unit consists of a solid epoxy block. The internal electronics are assembled and tested before the encapsulation process. During the encapsulation the printed circuit board(s) are placed in a five sided box made of RTV mold parts. The cavity is filled with epoxy and the lid (top) of the mold is inserted. The curing process takes 24 hours. This type of package seals the electronics so water and contamination cannot affect the internal electronics. This type of package also provides superior resistance to shock and vibration compared to a metal or plastic box enclosure.
Description
Basic Functions
The Y/C input consists of two BNC’s with two additional BNC’s for the loop-thru function. If the
loop-thru function is not used 75 Ohm terminators must be used on both loop-thru connectors.
The internal isolated power supply eliminates ground loops between the power supply ground
and the video grounds. All of the video signal BNC’s shields are connected to the internal circuit
ground plane. The unit will operate correctly on 10-24 VAC or 10-34 VDC.
The unit will operate as a Y/C to Composite converter without using the USB port as shipped
from the factory. The unit automatically detects if the Y/C video input is NTSC or PAL timing
and generates the correct composite video output (regardless of the Option setting). If no video
is present on the input the LED will be yellow. The unit will output a solid blue screen if no video
is present on the input. The format (NTSC or PAL) of the blue screen will match the last input
video signal format or at power up the Option setting. The user can select an Option mode or
the power up default mode can be set at the factory. When the unit detects video, the LED
turns to green.
The maintenance mode permits the user to output color bars, change the default Option mode,
and download new code.
Specifications
| Input Voltage Range | 2 Vpp max |
| Input Format | NTSC (60 Hz) or PAL (B/G/H/I/D, 50Hz) |
| Input Impedance | 10K Ohms (loop-thru input) |
| Input Connectors | BNC (4X) |
| Output Gain | Unity |
| Output Coupling | DC coupled (DC restored, clamped to ground) |
| Output Connectors | BNC (2X) |
| Video Decoder | Analog Devices ADV7180 |
| Video Encoder | Analog Devices ADV7171 |
| Configuration port | USB |
| Power LED | Green/Yellow |
| Operating Temperature | -40C to +80C |
| Operating Altitude Range | |
| Power | AC: 12-24VAC DC: 10-34VDC (either polarity on PWR connector) |
| Supply Current | 12VDC 260ma 28VDC 125ma |
| Power Connector | 3.5mm 4 pin terminal block (Phoenix #1911185)
Mating Plug (Phoenix Contact #1847071) |
| 4.4” x 2.2” x 0.65” (WxDxH) | |
| Mounting | Two 6-32 threaded inserts (pull tested to 100lb) |
| Weight | 7.0 oz |