9. Tone Dialling simulators (Tone Pads)
For the acknowledgement procedure the SD1 "looks" for any tone between 600Hz and
1400Hz. This is supplied most reliably by the [8] button used for MF dialling although other
buttons may work if pressed accidentally.
If the recipients phone cannot produce a suitable tone then a Tone Dialling Simulator (Tone
Pad)must beused. Theseareavailable frommany highstreet electricalstores andalsofrom
specialist suppliers such as RS Components (stock code 252-841) and Maplin Electronics
(stock code CK25C).
10. Trouble-Shooting Guide
Problem The unit will not dial out.
Cause Number incorrectly dialled
Action Check the telephone number you are calling has been entered correctly.
Cause The SD1 is not compatible with PABXs that require a pause or wait for secondary
dial tone.
Action Program the unit to pulse dial (see Operating Instructions). If this does not solve
the problem the dialler must be connected to a direct telephone line.
Cause Incorrect telephone line connections.
Action Check the connections to the telephone line (see section 7).
Problem When the unit calls the recipient they can't acknowledge the unit by pressing
the number [8] button.
Cause Incorrect acknowledgement procedure.
Action Instruct the recipient in the correct procedure (see Operating Instructions).
Cause Incorrectly connected to the telephone socket.
Action Check that all three connections are correctly connected (see section 7).
Cause Incompatible telephone.
Action Call the recipient and ask them to press the number [8] button on theirtelephone
for 1 second. If you hear anything other than a 1 second tone, their telephone
is not capable of acknowledging the SD1 (see section 9).
Problem The recipient can't acknowledge the unit with a mobile telephone.
Cause Weak reception or incompatible telephone.
Action Mobile telephones will only work correctly if they are used in an area where the
reception is good. Also check their tone duration (see section 9).
Problem The SD1 will not trigger from the alarm panel.
Cause Incorrect polarity setting.
Action Check the jumper-link is set to the correct position (see section 5).
Cause Incorrect trigger voltage.
Action Measure trigger voltage and check connections ( see section 6).
