Configuration & Controls
6
Sonifex HY-03 User Handbook
Remote Mode Select Switch
This switch determines the operation of the remote line connect switch, if connected:
Switch depressed (down)
- Permanent (latching) mode selected
Switch not depressed (up)
- Momentary mode selected
Configuration Settings Switches
These switches are used to configure the HY-03 in the modes that you want it to operate. A label on the top panel of the
unit shows the orientation of the switches :
Figure 2-3 : Configuration Settings Switches
Dial Tone Disconnect Enable - SW1
When enabled (ON), the HY-03 will automatically disconnect from the telephone line when an appropriate dial tone is
detected. See “Using the Dial Tone Disconnect option” later in this section.
Note : This feature is an optional extra and requires an additional plug-in PCB to be fitted. Please contact Sonifex for
further information and pricing on the HY-03DTD board.
K-Break Disconnect Enable - SW2 and JP4
When SW2 is enabled (ON) (and for serial number HY-03 units after HY000323 when JP4 is on), the HY-03 will
automatically disconnect from the telephone line by detecting the K-break. The K-break signal only operates in the UK and
is available on nearly all electro-mechanical exchange systems. The signal consists of a momentary disconnection or
significant reduction in current (to below 1mA) lasting from about 1ms to 100ms (modern design exchange systems are
designed to have a K-break signal lasting 50ms). British Telecommunications plc may, in some situations where no end of
call signal is available, be able to provide one at the request of the customer.
Line Polarity Reversal Disconnect Enable - SW2 and JP5
When SW2 is enabled (ON) (and for serial number HY-03 units after HY000323 when JP5 is on), the HY-03 will
automatically disconnect from the telephone line by detecting the line polarity reversal. Line polarity reversal operates in
the US and Canada and consists of a momentary reversal of the line polarity. Once a call is completed, polarity reversal
happens on the line 3 times, each separated by a 10 second gap.
Input/Output Mix Enable - SW3
When this switch is enabled (ON), the HY-03 output signal will be an equal mix of the normal output signal and the
selected input signal, either Mic or Line. This is useful if, for example, you want to use the HY-03 output to record both
sides of the conversation.
Ring Detector (Auto Answer) Enable - SW4
This switch enables the integrated ring detector, which automatically answers incoming calls after a predetermined
number of rings. The ringing detector circuits are on-line before and during the ringing cadence and are switched off-line
during call holding.
Mains Voltage Selector Switch
This is used to configure the HY-03 operating voltage as either 115V, or 230V. The switch is recessed so that it can not be
accidentally altered.
Note : The fuse will need to be changed if you alter the voltage settings.
