6766PICTURE 4-21The Memo field allows you to include a note about the user or group that is only visible in thiswindow.Toggling the Reusable box allows more than one user to log in using this accountCreating a group gives you the ability to set the access privileges for as many users and anyusers’ rights cannot exceed that of the group they are in.Selecting Modify Password opens a new window which allows you to select the user whosepassword you want to change. Enter the old password and then the new password twice.AUTO MAINTENANCEMuch like a regular computer, this DVRbenefits from being restarted after extendedperiods of operation.You can determine when the system willautomatically reboot and you can optionallyhave it auto-delete old files at that time aswell. You can set this option to delete filesthat are 1-31 days old.TV ADJUSTThis control is for use if you have an externalTV monitor connected to the Video Out.It allows you to adjust the picture on thetelevision to allow the display to fit themargins of that screen.4.5 BACKUPThis window was covered in Section 3.8 Backup4.6 SHUTDOWNThis is the preferred method to use when shutting down the DVR.When this window is opened, you have theoption of logging out as a user, switching theuser, shutting down the system or restartingit.PICTURE 4-22PICTURE 4-23PICTURE 5-1PAN/TILT/ZOOM CAMERAS CHAPTER 55.1 CONNECTING A PTZ CAMERAThe RS485 connector is used to connect and control PTZ cameras. It uses a single-directionprotocol meaning that it can send commands out to the camera(s) but not receive any databack from the unit.The DVR is set by default for RS485 to be disabled for each channel. Therefore, PTZ settingsmust be enabled before PTZ cameras can be utilized. This system supports 26 of the mostcommon protocols including Pelco-D and Pelco-P.When connecting a PTZ camera, the following should be taken into account:• Shielded twisted wire is recommended with the shielded layer being used to connect to theground. Improper grounding may result in chip damage. We recommend using CAT 5 or CAT6 wire for this purpose.• The 485 port of this DVR cannot parallel connect with the 485 port of another device• The voltage between the A and B lines of the camera should be less than 5V.STEP 1. The two wires of the data cable from the PTZ camera must be inserted intothe ports labeled A & B as shown in Picture 6-1. Multiple PTZ cameras can beconnected to this port, but you may require an expander port to do so.A BSTEP 2. The color of these leads willvary by manufacturer but they shouldbe labeled “+” or positive and “-” ornegative. The positive wire should beinserted into port A with the negativegoing into port B.The insulation on both leads should be stripped to expose about 1/8” or 4mm of baremetal. You must push in the orange tab above the port with a small item like the end ofa paperclip while inserting the wire lead. When the wire is sufficiently inserted, releasethe orange tab. Pull gently on the wire to ensure that it is locked in the port.STEP 3. Connect the other end of the cable to the proper pins in the connector on thecameraSTEP 4. Connect the camera video and power cables as you would any other camera.