Sonifex HY02 DIGITAL, User Handbook Manual

 Circuit Description & Controls         Page 2-7                 

HY02 Digital TBU User's Guide 

2.3. Alignment Controls 

 
The following alignment controls and jumpers are provided within the equipment for 

setting the general operating parameters. For the position and layout of the preset alignment controls, 
see Figure 2-3, overleaf. For normal operation of the equipment, these controls will not need to be 
altered.“Set” or “Enabled” implies that the jumper is on. 

Do not adjust these settings without consulting a technical information file.

2.3.1. Jumpers 

 
JP1 

Controls whether the Remotes connections are actuated by momentary 

or permanent contacts. Set over 1 & 2 for momentary. Set over 2 & 3 

for 

permanent. 

JP2 

Set for line disconnect ( default ). If the caller hangs-up, this will drop 

the line off using K-break. 

JP3 

Set for auto answer. The ringing detector circuitry must be fitted. 

JP4 

Factory set on pins 2 & 3 - do not adjust. 

JP5 

Factory unset - do not adjust. 

JP6 

Factory set on pins 1 & 2 - do not adjust. 

JP7 

Link for instant reset. 

JP8 

Controls disconnect tones : Set for single tone, unset for dual tone 

(UK). 

JP9 

Controls disconnect tones : Set for pulse tone ( Belgium, France ), unset 

for continuous disconnect ( UK ). 

JP10 

Controls disconnect tone burst : Set for long burst ( 4 secs ), unset for 

short ( 2 secs ) disconnect tone burst ( UK ). It is the length of time that 

the line tone has to be present before the automatic disconnect operates. 

JP11 

Set for dial tone detect ( hang up tone ). If JP2 is connected and the K-

break has failed, this will automatically hang the line up. 

JP12 

Line connect enable. This is factory set and should not be adjusted. 

JP13 Not 

used 

2.3.2. Preset Potentiometers 

 
RV1 

This sets the frequency of the primary 440 Hz disconnect tone. Range 

is  

250 - 550 Hz. 

RV2 

This sets the frequency of the secondary 350 Hz disconnect tone. Range 

is 250 - 550 Hz. 

RV3  

This sets the number of rings before operation of the ringing detector 

between 1 and 5 rings. 

2.3.3. LEDs 

 
LD1 

Status LED provides error message information ( See Section 2.2.8 ). 

LD2 

Transmit LED is on whenever transmitting. 

LD3 

Receive LED is on whenever receiving.