Grass Valley ADX-1881 - Manual (Page 2)

ADX-1881 HD/SD 8 AES Disembedder
Guide to Installation and Operation
Page 2 of 12 ADX-1881
ADX-1881 Front card edge
PROCESSING PERFORMANCE
Signal Path:
10-bit video / 24-bit audio
Audio Processing
Delay: 875
µ
s (combined embedding and
extraction ‡‡)
Audio Delay: Up to 3 video frames (1/2 frame steps)
ATC/DVITC Delay: None, 1, 2,or 3 frames before
translation to LTC
RS-422
Processing Delay: 500
µ
s max. (combined embedding
and extraction ‡‡) (1 frame in
metadata mode)
GPI Processing
Delay: 4 video lines (combined embedding
and extraction ‡‡)
Test Signals: Audio - 1 kHz tone (R steady, L
pulsed) -18dBFS (EBU R49, R68)
LTC – 10 second loop starting at
23:59:00:00
Power: 9.5 W
Note ‡‡: Applicable to combinations of AMX-1881and ADX-
1881
List of supported formats:
1920 x 1080/59.94/I
1920 x 1080/50/I
1920 x 1080/29.97/P
1920 x 1080/25/P
1920 x 1080/24/P
1920 x 1080/23.98/P
1920 x 1080/29.97/PsF
(detected as 1920 x1080/59.94/i)
1920 x 1080/25/PsF
(detected as 1920 x 1080/50/i)
1920 x 1080/24/PsF
1920 x 1080/23.98/PsF
1280 x 720/59.94/P
1280 x 720/50/P
525 (NTSC)
625 (PAL)
Select Status
Status LED
SELECT button
ADX-1881
(Note: female 15-pin connectors on both panels)
ADX-1881 Rear Connector Panels
SPECIFICATIONS(cont’d)
AUDIO AES SIGNAL
Sampling Rate:
48kHz synchronous
LTC SIGNAL OUTPUT
Signal:
Reconstructed LTC from ATC/DVITC
Impedance: < 55
Ω
source, unbalanced 1k
Ω
load
Level: 1.0 Vp-p
RS-422 SIGNAL OUTPUT
Signal:
RS-422
Rate: Reconstruction of signal input to
embedder (38,400 or 115,200 bauds)
GPI SIGNAL OUTPUT (2)
Signal: Opto-isolated, common emitter
Forward voltage 30V max
Reverse voltage 5V max
Rate: DC- to 250 Hz
VIDEO OUTPUT (Input active loop-through)
Video Signal:
HD/SD-SDI SMPTE 292M/SMPTE
259M
Return Loss: >15 dB up to 1.5 GHz/270MHz dB
Wideband Jitter: < 0.2 UI p-p
ADX-1881-75-DRP ADX-1881Breakout
Panel