Page 26 of 31
Doc 6001565
Rev C
C. TELEPHONE ENTRY
Test the telephone entry function as follows:
1. When the Infinity dials, the "OFF HOOK" indicator LED on the telephone interface board (see
Figure 16) should illuminate and the person dialed should receive the call.
2. Voice communications should be distinct and easily heard.
3. If the called party dials a "9" (either rotary or tone phones), the main relay should activate for
the programmed amount of time.
4. Dialing a "5" (tone telephones only) should activate the second relay if it is programmed as a
control relay.
5. If the person called has a rotary dial telephone, the "CLICK SENSE" indicator should light on
each click heard.
Before making any adjustments, the model of the telephone interface board must be determined
(model 1100329). Look for the number located on the upper left-hand edge of the telephone
interface board, preceded by the letters "ASSY". Refer to the appropriate circuit board shown in
Figure 16 for adjustments.
Telephone Interface Board (SN1100329)
CLICK LEVEL
VR3
SPEAKER
LEVEL
VR4
HANDSET
TB1
PANEL
SPEAKER
J1
CLICK
DETECT
GROUND
1564F3
LINE
OFF HOOK
RING
CLICK LEVEL
Daughter Board (SN1110080)
TELCO LINE
MIC
SENS
PANEL
MIC
LINE BAL 2
LINE BAL 1
Figure 16: Telephone Interface Board, Adjustments and Indicators
Содержание SENTEX Infinity B Series
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