Automation Control Circuitry

What is TTL? TTL stands for Transistor-to-Transistor Logic, where the “logic” determines which values are high and low. Standardized common TTL circuits operate with a 5-volt power supply. A TTL signal is defined as low when the voltage is measured between 0.0 V and 0.8 V with respect to the ground terminal, and high when… Continue reading Automation Control Circuitry

What types of microphones are compatible with the ExacqVision Hybrid NVR?

When using the audio input terminals on the rear of an ExacqVision Hybrid NVR, you will need a microphone with a a pre-amplifier capable of producing a line level output that can be connected directly to the ExacqVision audio terminal inputs. If using a mic level output microphone, you will need a mic pre-amp to… Continue reading What types of microphones are compatible with the ExacqVision Hybrid NVR?

Does ExacqVision work with 64-bit Windows?

ExacqVision Server software has supported 64-bit Windows since Server version 6.4. sDVR and tDVR analog capture board installers for 64-bit Windows ExacqVision Hybrid systems are also available. For a list of currently supported operating systems, refer to the software product pages on Exacq.com, then click ‘System Requirements.’ <br>

Replacing or Adding a Hard Drive Using Windows

If you have replaced a failed/failing hard drive, or added an additional hard drive to your Windows system in a JBOD (non-RAID) configuration, the steps below will guide you through setting up the drive for recording using Windows OS tools. NOTE: It is best practice to make hardware changes with the system powered off.<br><br> <br>

Enumerating more than Four Serial Ports in Linux

If a system is built with the Radisys motherboard or has two or more eDVR boards, there are more then four serial ports. However, Ubuntu 8.04 enumerates only four serial ports by default. To change the number of serial ports enumerated, complete the following steps: <br> Edit menu.lst by typing sudo nano /boot/grub/menu.lstFind the line that… Continue reading Enumerating more than Four Serial Ports in Linux

Manually Checking a Drive for Errors in Linux

Run fsck On Linux systems, if a disk encounters a filesystem error, the physical drive may still be good but require a file system consistency check. Perform the following steps to attempt to correct this. If the affected volume is a video storage volume: <br> Appendix If drive fails to unmount, you will need to… Continue reading Manually Checking a Drive for Errors in Linux