CRYSTALVIEW PLUS USB INSTALLATION AND OPERATIONS MANUAL
23
Only video is required, but no picture appears.
The probable cause is that power to the Local Unit is not applied. The
Local Unit obtains its power from the CPUs USB port. A USB cable
must be connected from the Local Unit to the CPU even if no keyboard
or mouse is required. A supplementary power supply can be obtained
that connects to the Local Units USB connector.
No sound at the Remote Units speakers or headphones.
Audio cable loose or defective.
Audio cable in the wrong connector.
Sound card “Line Out” muted.
No sound at the CPUs speakers when using a Microphone on the
Remote Unit.
Microphone cable in wrong connector.
Sound card “MIC” input muted.
Microphone signal not amplified; increase sound card amplification by
+20db. Add “MIC” jumper on the Remote Units daughter board to
increase signal. Do not add this jumper if the microphone is already a
powered microphone.
Serial device does not function
Serial cable loose or defective.
Flow control incorrectly set on unit or CPU.
Connect serial device directly to the CPU’s serial port and check to
determine if the problem is a PC or CrystalView Plus USB problem.