User`s guide

14 Rear Panel
Ground Lift and Video Termination
Switches
This two-position DIP switch is located between the Sync BNCs and the RCA
jacks. The “ Down” position of the switches is “ On”.
Position Function Factory Default
1 Ground Lift “ Off” (Circuit ground not
connected to chassis.)
2 75 Ohm Termination “ Off” (no termination)
To prevent AC hum or video noise arising from ground loops, position “ 1” of
this switch is shipped in the open position to isolate the Digital Video Machine
2’ s ground from its chassis. To connect the DVM2’ s ground to the chassis, set
this switch to “ On”.
The DVM2/L and
DVM2/V are not
equipped with Video
Sync connections.
If you are using a video sync signal connected to the DVM2’s Sync input to frame
synchronize the unit, position “ 2” of this switch may be set “ On” to provide a 75 Ohm
termination to ground. If the second Sync connector is being used to “ daisy chain” the
sync signal to additional connectors, this switch should be left “ Off”.
Configuration DIP Switch
This eight-position DIP switch is on the rear of the unit at the far left. The
“ Right” position of the switches is “ On”. The “ Left” position of the switches is
“ Off”. All DIP Switch settings are continuously monitored by the software.
Position DVM 2 DVM2/L DVM2/V Factory
Default
1 Voltage / Contacts “ Off” (voltage
inputs)
2 NTSC / PAL NTSC / PAL Reserved “ Off” (NTSC)
3-5 Serial Port
Protocol
Selection
Limited Serial
Port Protocol
Selection
Limited Serial
Port Protocol
Selection
"Off" (.ini file
selects
protocol)
6 Password Reset "Off"
7-8 Video Select Reserved Reserved "Off" (.ini file
selects video
output)