Specifications

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LT-1606
LT-425D Digital Component Test Signal Generator
A precision source of 10-bit 4:2:2 Component Digital Test Signals, the
LT 425D offers features that make it an ideal choice for production and
development applications. These include both embedded AES/EBU
digital Audio test tones and a dedicated rear panel AES/EBU output.
Front panel switching includes 625/50 or 525/60 operation (test signals
adapt automatically to suit the system selected) and On-Off control of
Y, Cb and Cr.
Menu control of operating options is facilitated with front panel keys
and on-screen menus. These include Embedded Audio Channel
On/Off control and Tone Frequency selection. ID character and Calendar/Clock Programming, Timing Advance/Delay to ± 16 lines, EDH
On/Off, Key Lock and control of the moving target and switched pattern displays. The latter are of value in compression testing and controls
the effect of the speed and direction of the moving target and the dwell intervals for sequential switching of selected test patterns.
Digital genlock includes front panel Advance/Delay keys (Coarse and Fine). The Coarse keys operate in 3 ms increments, the fine keys in incre-
ments of 20 ns. This, combined with a ± 16 line menu selected Advance/Delay, yields precise, calibrated timing control. Rear panel facilities
include four serial outputs (one Digital Black), one Parallel output, one AES/EBU Digital XLR Audio output. two Blackburst Analog outputs, a
pair of genlock Loop-Through inputs and a 27-MHz Clock output.
■ 4 Serial (includes Digital Black) and one Parallel Outputs
■ EDH Codes in accordance with RP-165
■ 4-channel AES/EBU Embedded Audio Plus, Independent
AES/EBU Digital Audio Output
■ Compression Tests include Variable Speed, Direction Controlled
Marker and Sequentially Switched Patterns
■ Digital Genlock with Programmed Advance and Delay
■ 27-MHz Clock Output
■ Two Analog Blackburst Outputs
■ 20-Character Programmable ID and Calendar/Clock
■ Test Signals (adapt automatically to 625/50 or 525/60 require-
ments)
■ Full Field 100% Color Bars
■ Full Field 75% Color Bars (EBU Bars in 625/50)
■ SMPTE Color Bars (BBC Bars in 625/50)
■ Combination Color Bars/Ramp (SMPTE or BBC)
■ Flat Field, Red
■ Multiburst, 100% or 60%
■ Multipulse
■ Line Sweep, 100% or 60%
■ Bow Tie (used with permission of Tektronix. Inc.)
■ 10-Step Staircase
■ Ramp: Oversize, Digital Limit and Shallow (10)
■ SDI Pathological Check Field
Video Encoder for NTSC, PAL & HDTV
The LT 1606 extends the flexibility of programmable RGB generators, in terms of stock
and custom patterns and raster parameters (within limits), into the testing of monitors and
systems that operate in fully encoded NTSC, PAL and the new HDTV systems. NTSC
and PAL outputs contain fully encoded subcarrier and burst and are available in full com-
posite and separate Y/C using the standard 4-pin SVHS connector. Analog component
feeds YPbPr, as well as actively buffered RGB, are available at the same time. This makes
the encoder an extremely useful tool for engineering, service and QC applications.
■ Generates NTSC, PAL and HDTV analog components
■ Operates from R, G, B, CS and clock from Leader LT-1610A,
LT-1611, LT-1613, LT-1615 RGB Generators
■ NTSC, PAL or HDTV set up automatically from input clock
■ NTSC and PAL outputs in full Composite, separate Y and C and
analog components YPbPr
■ HDTV Includes 1080i, 1080p, 720p, 480p and others
■ HDTV analog outputs are 3-wire YPbPr with tri-level sync
■ Simultaneous active RGB outputs to drive RGB monitors