VA6803SX/DA1926AV
VA6803SX/DA1926AVVA6803SX/DA1926AV
VA6803SX/DA1926AV
User’s Guide
400-01 4-007
9
7. Operation
Once the horizontal position and equalization controls are set, the
VA6803SX/DA1926AV will operate successfully without user intervention.
7.1 Horizontal Position (VA6803SX)
Most monitors and projectors are capable of horizontal position
adjustments. In some instances, like when using multiple computers, it is
helpful to adjust the horizontal position at the interface and often
simplifies the set up.
Turn the knob fully counterclockwise to turn off the horizontal position
control. Turn the knob clockwise to enable the horizontal position control
and to adjust the image as desired. It is recommended to first adjust the
horizontal position of the image using the monitor or projector Horizontal
Position control. If further adjustments are needed, use the VA6803SX.
7.2 Equalization
Equalization is a means of boosting the red, green, and blue signals at high
frequencies for cable runs over 100 ft (30 m), and up to 300 ft (91 m). The
equalization control should be set fully counterclockwise to minimum for
short cable runs. The longer the cable run, the more equalization is
required.
7.3 Sync-On-Green, SOG
Systems that use large matrix switchers are often designed to switch signals
in RGsB format in order to reduce costs. In these systems, the ability of the
VA6803SX/DA1926AV to pass sync-on-green can be very helpful.
The VA6803SX/DA1926AV cannot separate H&V sync from the green
signal if the input signal is RGsB. The VA6803SX can combine sync with
green video when the internal SOG jumper is set to the ON position and
the HV PRES jumper is in the OFF position regardless of whether the
input signal is RGBS or RGBHV.
8. Troubleshooting Guide
We have carefully tested and found no problems in the supplied
VA6803SX/DA1926AV; however, we would like to offer suggestions for
the following:
8.1 LED is Not Red
The LED should be ON and RED when power is applied and there is
no video signal present. If the LED is ON and GREEN, the unit is
receiving power and a SYNC signal.
Cause 1: No AC power.
Solution:
Verify the adapter is plugged into a working AC outlet and
that the outlet has power.
Cause 2: Adapter is not plugged into the device.
Solution:
Verify the DC power plug coming from the AC adapter is
plugged all the way into the VA6803SX/DA1926AV.
Cause 3: The device has a problem.
Solution:
If there is AC power to the adapter and the LED still does not
turn on, the VA6803SX/DA1926AV or the power adapter may
require service; call ALTINEX at (714) 990-2300.
8.2 LED is Not Green
Cause 1: There is no power.
Solution:
Disconnect the video input from the interface and verify the
LED is ON and RED indicating power is present. Reconnect
the computer's video output. If the LED is still not GREEN see
Cause 2.
Cause 2: There is no sync signal.
Solution:
Verify the computer output is operating correctly by
connecting it directly to the local monitor. If the display is
good, call ALTINEX at (714) 990-2300.
8.3 No Sound
Cause 1: The source has a problem.
Solution:
Check the source and make sure that there is a signal present
and all source connections are correct. If the source is working
and there is still no sound, see Cause 2.
Cause 2: The volume is too low.
Solution:
Increase the source level. If there is still no sound present, see
Cause 3.
Cause 3: Cable connections are incorrect.
Solution:
Make sure that cables are properly connected. Also, make sure
that the continuity and wiring are good. If there is still no
sound, see Cause 4.
Cause 4: The receiving device has a problem.
Solution:
Make sure the receiving device is powered and is turned on. If
there is still no sound, please call ALTINEX at (714) 990-2300.
8.4 No Remote Image
Cause 1: The source has a problem.
Solution:
Check the image on the local monitor and verify the quality is
good. If the local image is good, see Cause 2.
Cause 2: Cable connections are incorrect.
Solution:
Make sure that cables are connected properly. Also, make sure
that the continuity and wiring are good. If there is still no
image present, see Cause 3.
Cause 3: Video equalization required.
Solution:
Adjust the VIDEO EQUALIZATION on the interface. Cable
runs less than 100 ft (30 m) require little or no equalization and
should be set to minimum. Cable runs up to 300 ft (91 m) will
require near maximum equalization.
8.5 Remote Image Quality is Poor
Cause 1: The source has a problem.
Solution:
Check the image on the local monitor and verify the quality is
good. If the local image is good, see Cause 2.
Cause 2 Poor signal transmission.
Solution:
Check the cables for continuity and make sure that
connections are wired properly to verify that there is good
signal transmission. If the image is still not correct, call
ALTINEX at (714) 990-2300.
Cause 3: Video equalization required.
Solution:
Adjust the VIDEO EQUALIZATION on the interface. If the
image is still not correct, call ALTINEX at (714) 990-2300.
