Programming Of Entry Phone - Laskomex CD-2502 Series Installation, Service And Programming Manual

Balance control
If during a conversation or replacing the receiver there are acoustic disturbances
(whistles, squeaks etc.) line balance should be adjusted. For this purpose we call
a uniphone installed more or less in the middle of the line length L+, L-. By
potentiometers P2 and P1 we set preliminarily the volume of conversation in both
directions. By potentiometer P3 we find two induction points (upper and lower) and
set it in the midway between these points. Loudness of the conversation should be
slightly increased by potentiometers P2 and P1 — these steps should be repeated
until the maximal volume of the conversation is found. After optimal setting of
P3 the volume of conversation in both directions can be decreased to the required
value (P2 should be set to minimal sufficient volume, P3 should be set to approx.
25 below induction threshold).If in a few uniphones there is still induction, the
amplification in these areas should be decreased by means of potentiometer P1 in
a uniphone.
8

Programming of entry phone

In entry phone control program 9 procedures are available in which parameters
effecting the operation of the whole system can be changed. In order to change
cassette settings, it should be brought to programming mode. For this purpose, field
marked with symbol of key should be touched five times. When four horizontal lines
appear on display serial number of electronic cassette should be entered. The code
can be read from a label placed on cassette bottom, on the exchange processor or
sheet with the codes of the combination lock. If administrator key has been defined
earlier, key can be applied to the reader instead of entering the code.
ENTER SUCCESSIVELY 4 DIGITS OF CODE
If installing specialist's code (serial number of electronic cassette) is correct or
administrator's key was applied to the reader symbol P- . will appear on the display
which will inform that entry phone in the main menu of programming mode.
In programming mode 9 procedures are available in which values of consecutive
parameters can be edited. In procedures P1 and P2 switching to next parameters
is realized by means of pushbuttons 1, 4, 7 (scroll backward) and 3, 6, 9 (scroll
forward). Value preview of actual parameter is realized by mean of pushbutton 2.
Edition of parameter value takes place after selecting key with symbol KEY . In
edition mode flashing current parameter value appears on the display. This value
can be changed by selecting a new value by the keyboard or deleting it by key
[C] and entering a new value. The role of function keys in programming mode is
1 2 3
Figure 18: Entering programming mode
8 PROGRAMMING OF ENTRY PHONE
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