Tektronix ECO422D, Instruction Manual, Page: 57 / 128

Specifications
ECO422D SD/HD Changeover Unit Instruction Manual
3- 5
Table 3- 2: Signal loss detection
Characteristics
Performance
requirements Supplemental
information Performance
Ver. step
Input Signal Switching Level
within:
These are the defined
switching thresholds set
with the internal Channel
Configuration switch.
Between 2 and 4 dB
down from nominal.
NTSC Black Burst
(sync level) --180 to --230 mV --200 mV 2 & 4
PAL Black Burst
(sync level) --190 to --240 mV --210 mV 3 & 5
Serial Digital Video
(NTSC Composite) 450 to 630 mV 540 mV (between 2 and
5 dB down) 10 & 11
Serial Digital Video
(270 Mb/s) 450 to 630 mV 540 mV (between 2 and
5 dB down) 7 & 8
Serial Digital Video
(1.485 Gb/s) 450 to 630 mV 540 mV (between 2 and
5 dB down) 16 & 17
Serial Digital Audio 630 to 790 mV 710 mV 13 & 14
User Adjustable --100 to --700 mV
--700 to --3500 mV
Using the two user-de-
fined Channel Configura-
tion switches.
Using the user-defined
Channel Configuration
switch with the attenuator
on.
Attenuation approximately x5
Analog tri-level sync 400 to 565 mV 475 mV (between 3 and
6 dB down)
2
2
Performance is verified indirectly by completing Performance Verification steps 2- 5
& 10- 11.