thanks all for the info so these are the cameras I have upgraded to,
Image Sensor 1/3 inch Color Sony High Resolution CCD
Effective Pixels 768(H) x 494(V)
Sensing Area 4~9mm Vari-Focal Lens
Signal System NTSC
Horizontal Resolution 550 TV Lines
Minimum Illumination 0.0LUX (IR Lamps on)
Shutter Speed 1/60 - 1/100,000sec
S/N Ratio >48dB
Video Output 1.0Vp-p, 75 Omega
Power Requirement DC12V
Power Consumption 2.5W
IR Wavelength 850nm
IR Distance 98.43 ft. (30)
Dimensions (Approx.) height (3.5 in) diameter (4.75 in)
I bought them from the Home Security Store, they are an improvement over the ones that cam with the package.
These are the specs for the DVR,
Model DVR-M2104U - Standalone DVR
Operation System Linux Based
Video Compression MPEG4
Video System NTSC/PAL
Video Input / Output BNC4-Channel Input / 1-Channel Output
Audio Input / Output RCA 1 -Channel Input / 1-Channel Output
Display Frame Rate NTSC: 120 fps / PAL: 100 fps
Display Resolution NTSC: 720 x 480 / PAL: 720 x 576
Recording Frame Rate NTSC: 60 fps / PAL: 50 fps
Recording Resolution NTSC: 720 x 220 / PAL: 720 x 288
Record Mode Continuous / Scheduled / Motion Detection
Display Mode Each, Quad, Auto-switch
Playback Search Time & Date, Event List
Simplex / Duplex /Triplex / Pentaplex Simplex
Network RJ45
Net Protocol TCP/IP, DDNS
Remote Access LAN or Internet Browsing
HDD Interface SATA-100, Rack, support up to 750GB
USB For PC Playback & Backup / USB2.0
Remote Control IR Remote Control
Power Supply DC12V, 3A
Dimension 250mm (D) x 235mm (W) x 38mm (H)
As I am new to this area I am not sure what all this means, I have knowledge in Home theatre applications and I have always read that you equipment is only as good as the cables that connect it. Hopefully this is part of the issue, because it might be easier to fix at this time.
Thanks in advance to all of you,
Karl