INTRODUCTION
INTRODUCTION
1
Q: What type of remote lamp will the HY-03 drive?
A: The remote lamp type should be 15V at 40mA max. When connecting any loads the
current should be limited to this value using a series resistor. For example a 390 ohm
resistor would limit the current to 38mA.
To connect/disconnect the unit pins 1 and 2 should be connected together via a
contact closure or equivalent. Care should be taken that pin 3 is not connected to pins
1 or 2 and that incompatible external signals are not used. Incorrect conguration can
result in the failure of the connect/disconnect transistor and protection diode which
leaves the unit permanently latched in a connected state and therefore unusable.
As this fault is caused by using the unit outside of its recommended operating conditions it
will not be covered under warranty.
Q: What is the power consumption of the HY-03 telephone hybrid?
A: <6W for HY-03 and HY-03S.
Q: What functions are controlled by the conguration settings switches on the rear panel of
the HY-03 telephone hybrid?
A: SW1 – Dial Tone Disconnect Enable.
SW2 – K-Break Disconnect Enable.
SW3 – Input/Output Mix Enable.
SW4 – Ring Detector (Auto-Answer) Enable.
Q: The telephone hybrids don’t automatically disconnect on dial-tone. Why not ?
A: Whilst the HY-03 does include K-break disconnection (for the UK) and line polarity
reversal (for the US), these do not use the dial tone to disconnect. There is no dial tone
disconnection unless the HY-03DTD dial tone detect option has been added.
If the HY-03DTD option has been added and you still have this problem, then ensure that
conguration switch SW1 is set to on. Also, ensure that the HY-03DTD option is of the
correct type for your network connection. See the Dial Tone Disconnect section later in
this handbook.
Q: The telephone hybrid unit keeps “dropping the line”. How can I stop this happening?
A: Firstly, try disabling the k-break function of the hybrid – set the SETTINGS switch SW2
to o. If you still have a problem once the k-break is disconnected, please contact Sonifex
Q: The signal input to the HY-03 at the input connector, is audible at the output. Why is
this happening ?
A: There is an option on the HY-03 which enables the input signal to be mixed with the
output. Ensure the SETTINGS switch SW3 is set to o to disable this option.
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