3GM 3G/1.
Trademarks AJA®, KONA®, and XENA® are registered trademarks of AJA Video, Inc. Io HD™ and Io™ are trademarks of AJA Video, Inc. All other trademarks are the property of their respective holders. Notice Copyright © 2008 AJA Video, Inc. All rights reserved. All information in this manual is subject to change without notice.
AJA 3GM 3G/1.5G HD-SDI Multiplexer User Manual — Introduction 3 Introduction The 3GM is versatile and economical tool for interconnecting dual-link 1.5G SMPTE372M and 3G SMPTE425M. 3GM is bi-directional - allowing dual 1.5G to 3G or 3G to dual 1.5G conversion. Additionally, 3GM’s 3G HD-SDI output is configurable for SMPTE425M type A or B. The 3GM can even convert 3G from/to type A or B. 3GM also provides a monitor output which is a single link SMPTE292M 1.5G HD-SDI.
User Controls The user interface for the 3GM is an 8-position DIP switch accessible through a cut-out in the bottom of the unit. The exact function of each DIP switch and what it controls is described on the following pages. Switch 1—Selects Multiplex or Distribution Amplifier (MODE) DIP Switches LEFT RIGHT OFF ON LEFT (MUX) RIGHT (DA) MUX: Converts between Dual-link (SMPTE 372M) and 3G (SMPTE 425M) DA: Places device in distribution amplifier mode.
AJA 3GM 3G/1.5G HD-SDI Multiplexer User Manual — User Controls Switch 4 —Manually select the input signal bit depth: 10 or 12-bit LEFT (10 Bit) RIGHT (12 Bit) 10-Bit: If Dipswitch 8 is set to Manual or there is no payload ID, the 3GM will behave as if the input video is 10-bit. 12-Bit: If Dipswitch 8 is set to Manual or there is no payload ID, the 3GM will behave as if the input video is 12-bit.
Switch 8—Select between Automatic or Manual Setup LEFT (Auto) RIGHT (Man) AUTO: If payload ID is present, the 3GM uses data from the payload ID information to set color space and bit depth (switches 3 and 4). MAN: The 3GM uses switches 3 and 4 for color space and bit depth, regardless of whether payload ID is present or not. If payload ID is not present, the 3GM reverts to switches 3 and 4 for input information. Installation In normal operation the 3GM uses between 4 and 6 watts of power.
AJA 3GM 3G/1.5G HD-SDI Multiplexer User Manual — Specifications Dual Link to/from 3G level A Support 3G_A Mapping Image Size 1 Color Space Chroma Convert Resample Image Size Frame/Field Rates 4:2:2 YCbCr 10 bit 60, 60/1.001 and 50 progressive 1280x720 4:4:4:4 (RGB+A) (A opt. ) (Note 1) 4:4:4:4 (YCbCr+A) (A opt. ) (Note 1) 4:4:4:4 (RGB+A) (A opt. ) (Note 1) 4:4:4:4 (YCbCr+A) (A opt. ) (Note 1) 4:4:4 (RGB) 10 bit 60, 60/1.001 and 50 progressive 30, 30/1.001, 25, 24, 24/1.
