Specifications

HY-03 User Handbook

CONFIGURATION & CONTROLS

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 a UK 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 o-line during call holding.

Mains Voltage Selector Switch

This is used to congure 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.