LK5: Configuration Auto-Sense
This setting determines whether the host can automatically sense the configuration of the Applique. The operation of the Applique is not affected by this jumper setting. Auto-sense should be enabled when operating in 75 Ohm (unbalanced) mode. Current interface standards do not list this feature for 120 Ohm (balanced) mode.
LK5 | Setting |
Strap On | Auto-sense enabled |
Strap Off | Auto-sense disabled |
LK6 & LK7: 75 Ohm Termination Impedance
This jumper sets the termination impedance correctly for 75 Ohm operation. Both jumpers must be in place when operating in 75 Ohm (unbalanced) mode. Conversely, both jumpers must be removed when operating in 120 Ohm (balanced) mode.
LK6 | LK7 | Setting |
On | On | 75 ohm operation |
Off | Off | 120 ohm operation |
3.3POWER SUPPLY OPTIONS
The Model 2703-X21 is available with three power supply options:
The Standard power supply option (Model 2703-X21or 2703-X21- 230) is factory configured for either 115 or 230 VAC, depending on how the product is ordered, and is available with a variety of domestic and international power cords (see Appendix C).
The Universal Interface power supply option (Model 2703-X21-UI) operates in environments ranging from 85 to 265 VAC, with no re- configuration necessary (see Appendix C for available domestic and international power cords).
The DC power supply option (Model 2703-X21-DC) operates in 48 VDC environments and is equipped with a 3-pin “terminal strip” style DC power cord.
WARNING! There are no user-serviceable parts in the power supply section of the Model 2703-X21. Voltage setting changes and fuse replacement should only be performed by qualified service personnel. Contact Patton Electronics Technical support at (301)975-1007 for more information.
