netsys NH-310C User Manual page 21

Line speed LEDs do not light up green only, LEDs light up both green and yellow after making a
3. Symptom:
connection.
It is a normal response of the device when it is running at 32 to 64Mbps or SNR value at 23 to
Cause:
27dB.
To increase the data speed to more than 64Mbps, so that line speed LED will light up green then
Solution: you have to increase the SNR value to 28 or above. Either by decreasing the coaxial cable
distance or by decreasing the number of splitters connected to the coaxial cable.
4. Symptom: I connect TV signal to NH-310C, why TV signal can't show on TV.
Cause: TV signal is too weak or other factors.
Please verify that the following items to help you clarify the problem:
1. Verify coaxial cable must use RG59 75 ohm cable.
2. Verify TV signal source and TV if available.
Solution:
3. Check TV signal need to over 50MHz that will be passed.
4. Add TV signal repeater if TV signal source is too weak. (See Figure C-1, Situation A)
5. Add attenuator before TV if TV signal is too strong. (See Figure C-1, Situation B)
1. Weakened by the output television signal is due to environmental factors. NH-310C supports
TV signal pass through, but can not guarantee to be able to maintain an appropriate TV signal
output to TV, If the connection distance is too long lead to output of TV signal no signal or
attenuation.
Notes:
2. Please note that NH-310C TV signals input power is unlimited, user does not need add the
attenuator before NH-310C to weaken the TV signal source.
3. If TV signal is too strong, leading to the advent of television ripple, please add an attenuator
before TV.
NH-310C HPNA3.1 over Coaxial Cable (HCNA) End Point USER'S MANUAL Ver. A7
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