Sierra Video 507144-00 - Manual (Page 10)

Digital Mixer User’s Guide 10
(10) ‘625’ lines 17,280 004380
Parameter Storage
The present reference-output sync delay and reference source selection can be stored to one of twelve
EEPROM registers for the present video standard by setting SWA to position E and setting SWB to any
value from 1 to C. The storage to EEPROM occurs when SWA is then moved OUT of position E. If SWB
is set to any value except 1-C, moving SWA out of position E will NOT result in parameter storage to
EEPROM. Note that separate storage locations exist for 625 and 525 line parameters(12 for each).
Parameter Recall
The present reference-output sync delay value and reference source selection can be recalled from one of
twelve EEPROM registers for the present video standard by setting SWA to position F and setting SWB to
any value from 1 to C. As SWB is changed, the modules delay will reflect the parameters previously
stored in the corresponding EEPROM register. Setting SWB to 0, D or E will result in a delay value of
0(no reference to output timing skew) and analog reference synchronization being loaded. Moving SWA
out of position F will store the register nuumber indicated by SWB into EEPROM, causing this parameter
set to be loaded whenever power is cycled or board reset occurs. Note that separate storage locations exist
for 625 and 525 line parameters(12 for each).
Specifications
Video Input Standard SMPTE 259M
Video Input Connector BNC female
Video Input Return Loss >15dB @ 270MHz(75 Ohm referenced)
Video Input Range Source must be within 200 meters of input when using Belden 8281
or equiv.
Video Output Standard ` SMPTE 259M
Video Output Connector BNC female
Video Output Jitter <350 picoseconds peak-to-peak with 10 Hz high pass filter
Ref.-Output Delay Adj. Res. 37nsec.(one 27MHz clock cycle)
Ref.-Output Delay Adj. Range One video frame period
Video. Delay 1.5 microseconds to 1 horizontal line period plus 1.5 microseconds
Power Consumption 5V, <1.5A
8V, <0.8A
-8V, <0.15A
Operating Temperature Range 0 to 50 C, non-condensing
Operating Humidity Range 0 to 95% RH, non-condensing
All specifications subject to change without notice.