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Model LT425D Component Digital Test Signal Generator
Model LT425D Component Digital Test Signal Generator
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Manufactured by: Leader
Our Price: $6,725.95
Model: LT-425D
Add to Cart:
Overview
Features
Speifications
A precision source of 10-bit 4:2:2 component digital test
signals, the
LT425D
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), 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 effect
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 µs increments, the fine keys in increments
of 20 ns. This combined with a ± 16 line menu selected
advance/delay yields precise, calibrated timing control.
Features
4 Serial (includes digital black) and 1 Parallel Outputs
EDH Codes in Accordane 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
2 Analog Black Burst Outputs
20 Character Programmable ID and Calendar/Clock
Test Signals (Adapts Automatically to 625/50 or 525/60 requirements)
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%
Bowtie (used with permission Tektronix, Inc.)
10-Step Staircase
Ramp: Oversize, Digital Limit and Shallow (10)
SDI Pathological Check Field
VIDEO PARALLEL DIGITAL OUTPUT
Applicable Standards
ITU-R601-3, SMPTE 125M 1992
Output Circuit
1 25-pin D-Sub
Balanced ECL (10 k Family)
VIDEO SERIAL DIGITAL OUTPUTS
Applicable Standards
ITU-R656-1, SMPTE 259M
Auxiliary Data
Embedded audio (SMPTE 272M)
CH1, 2/3, 4 menu switchable
800 Hz/1 kHz menu selectable
EDH (SMPTE RP-165) menu on/off
Output Level
800 mV p-p ± 10% into 75 Ω
DIGITAL BLACK
Auxiliary Data
EDH (menu on/off switchable)
No embedded audio
Output Level
800 mV p-p ± 10% into 75 Ω
ANALOG BLACK BURST OUTPUTS
System
NTSC or PAL (follows digital choice)
INDEPENDENT DIGITAL AUDIO OUTPUT
Applicable Standards
AES/EBU
Sampling Frequency
48 kHz ± 0.1 Hz (sync to video)
Number of Channels
2
Quantitative Bits
20/16 (internal switch)
Tone Frequency
1 kHz/800 Hz (internal switch)
Tone Level
-18 dB/-20 dB (internal switch)
Output Impedance
110 Ω ± 20 Ω
27-MHZ CLOCK OUTPUT
Frequency Accuracy
27 MHz ± 13.5 Hz (± 0.5 ppm)
Output Circuit
Single ended ECL (10 k Family)
TEST SIGNALS
100% Full Field, EBU, SMPTE and BBC
Color Bars, Ramp/Color Bar Combo,
Red Field, Pulse & Bar, 50 & 100% Flat
Field, 60 & 100% Multiburst, Multipulse,
Bowtie, 10-Step Staircase, Oversize,
Digital Limit and Shallow Ramps,
SDI Pathological Checkfield
Motion Picture
Moving white chip traverses left, right,
up, down or diagonally 30 steps. Dwell
time for each step 1 field, 1, 2, 4, 8 or
12 frames.
Still Picture
Test patterns switched in user-selected
sequence with dwell times set to 1
field, 1, 2, 4, 8 or 12 frames.
GENLOCK FUNCTION
Locking Modes
Sync lock and burst lock (burst priority)
Locking Method
Burst lock/sync lock automatically
with burst lock priority. Menu-selected
advance or delay of up to ± 16 lines
with respect to timing reference.
ID CHARACTER DISPLAY
Menu on/off switchable
Number of Characters
20 max, center screen
CALENDAR/CLOCK DISPLAY
Menu on/off switchable
POWER REQUIREMENTS
90 to 250 V ac, 50/60 Hz, 55 VA
PHYSICAL
Size (W x H x D)
163/4 x 13/4 x 217/8 in.
426 x 44 x 530 mm
Weight
8.8 lbs., 4 kg approx.
AVAILABLE OPTIONS
Digital Black Outputs (3) (NS-324)
Current Reviews: 0
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Manufacturer Info
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