SD/HD SDI Switch Std Input
18-111-102 (Two input switch)
18-111-103 (Three input switch
18-111-104 (Four input switch)
Overview
Common Application
The common application of this unit is to select between two inputs and route the selected SDI signal to the two outputs. This unit switches as soon as the control input selects a new input, the actual SDI video is not monitored to determine a switching time.
Power Supply
This unit has an isolated internal switcher power supply. The unit will operate correctly on 12-24 VAC or 10-34 VDC. The power input is protected so power can be applied in either polarity. The supply provides the internal electronics with power totally ground isolated form the power input. No opto electronics are used so the unit is not temperature limited by the isolated supply. The power connector is a four pin plug with jack screws so the power connection can support high vibration environments. In addition to the two pins used for power input, a third pin provides access to the internal electronics ground circuit. The fourth pin provides access to an internal chassis ground that connects to internal ESD protection devices.
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
The 18-111-102 is a two input to one output SDI video switch with single ended inputs (75 Ohm termination). This unit does equalization on the input signals to correct for long cables and re-clocks the output to remove jitter. The unit has two outputs, both provide the same selected input signal (this is not a matrix switch). Unused outputs do not need to be terminated with 75 Ohms. All of the video connections are BNC connectors. This unit is intended to be used with SDI (SMPTE 424M, SMPTE 292M, SMPTE 259M) video signals.
A USB port provides the user a way to set the control configuration. This unit can be controlled by push buttons, contact closures, pre-defined timed switching, or automatic switching on loss of signal.
Highlights
- SDI video switch
- 2 inputs, 2 output configuration
- Data Rates: 125 Mbps to 2.97 Gbps
- Outputs are re-clocked
- Standard single ended 75 Ohm terminated inputs
- BNC connectors for video signals
- Isolated power supply (12-24 AC, 10-34 DC)
Specifications
| Group | Isolated |
| # Channels | 1 |
| Inputs/Channel | 2 |
| Outputs/Channel | 1 |
| Input 1 Signal Type | SDI Video |
| Input 1 Coupling | AC |
| Input 1 Signal Format | SMPTE |
| Input Configuration 1 | Standard 75 Ohms |
| Input 1 Connector | BNC |
| Output 1 Signal Format | SDI Video |
| Output 1 Coupling | AC |
| Output 1 Connectors | BNC |
| Power Connector | 4 pin 3.5mm TB |
| Input Voltage 1 | 12-24 VAC |
| Input Voltage 2 | 10-34 VDC |
| Height | .65 |
| Width | 4.4 |
| Depth | 2.2 |
| Weight Oz | 8 |
| Low Operating Temp (C) | -40 |
| High Operating Temp (C) | 85 |
| Control 1 | Contact Closure |
| Control 1 Connector | 3.5 mm 7 pin TB |
| Power Bypass | NO |
| Mounting | Two 6-32 Inserts |