Honeywell HISD-1181W Operation Manual page 63

Possible Reason 1: No audio input connection
Solution: Check audio connection of the host
Possible Reason 2: The audio option of IP camera is off
Solution: Check audio parameter settings to see if you have opened the audio.
7. Search NVS software cannot find device.
Possible reason: Search NVS software adopts multicast protocol to perform
searching. But the firewall forbids multicast data packet.
Solution: Disable the firewall.
8. Image processing doesn't work properly.
Possible Reason 1: System issue, DirectX function is disabled, which will cause
slow display of images and abnormal color.
Possible Reason 2: Hardware issue, graphics card doesn't support image
acceleration and hardware zooming functions.(For hardware issue, the only
solution is to replace graphics card)
Solution: Install DirectX image drive, then StartRuninput "DXDIAG" as
follows:
Enable DirectDraw speedup, Direct3D speedup, AGP veins
speedup in DirectX function. If they cannot be enabled, that
means DirectX installation fails or hardware not supportive.
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