Audio support, Optional), Troubleshooting – Network Technologies USBV-x User Manual
Page 41
NTI UNIMUX SERIES USB KVM SWITCH
37
AUDIO SUPPORT
(Optional)
Models with audio support include 3.5mm stereo jacks for connection to audio sources and an output device. Audio from either
the same sources as the video, keyboard, and mouse or from separate sources (
any standard line level audio (4Vp-p))
will be
heard through devices such as self-powered stereo speakers or headphones.
Audio signals are switched along with the keyboard, mouse and video signals using the buttons on the UNIMUX switch.
Connections to “AUDIO IN” ports will switch at the same time as like-numbered “VIDEO” and “CPU” ports when controlling the
switch. For example, if “VIDEO 1” is switched to “VIDEO 2”, then “AUDIO IN 1” will also switch to “AUDIO IN 2”.
Figure 38- Rear View of UNIMUX-USBV-4O-A
TROUBLESHOOTING
PROBLEM:
Keyboard Errors
SOLUTION:
Check cable connections on each CPU and the switch.
PROBLEM:
No Video
SOLUTION:
Check cable connections on each CPU and the switch. Verify that keyboard and video connect from each CPU
to matching ports. After reconnecting, CPU may need to be re-booted in order to sense the monitor connection.
PROBLEM:
No Mouse Movement
SOLUTION:
Check cable connections of mouse. Verify that mouse driver was loaded.
SOLUTION:
Broadcast Mode is ON. Turn OFF Broadcast Mode.
PROBLEM:
Front pushbuttons are not working
SOLUTION:
Unit in Security mode. User not authorized to access switch. Log-in with authorized name and password.
PROBLEM:
No RS232 communication
SOLUTION:
Using null modem cable. Change cable to straight-through type (see page 38).
SOLUTION:
DIP switch settings are not correct for computer baud rate. Set DIP switches to desired baud rate and power
cycle the switch (see page 26).
PROBLEM:
No keyboard and mouse
SOLUTION:
Unit is in Command Mode. Press
SOLUTION:
USB lock-up- Hot plug the keyboard and mouse
SOLUTION
USB lock-up- Hot plug the USB cable from the computer
SOLUTION
UNIMUX lock-up- Power cycle the UNIMUX switch
VIDEO 4
VIDEO 3
VIDEO 2
VIDEO 1
MONITOR
CPU 4
CPU 3
CPU 2
CPU 1
(USER)
AUDIO OUT
3
4
1
2
(CPU)
250V,2A
NTI
NETWORK
TECHNOLOGIES
INCORPORATED
Tel:330-562-7070
Fax:330-562-1999
1275 Danner Dr
Aurora, OH 44202
www.networktechinc.com
R
AUDIO IN
3.5mm Stereo Jacks