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TELU/TEL-W2/TEL-W1/TEL-W2D/TEL-W2F
4)
Sending Frequency Response Adjustment The adjustment of the high range frequency response is performed by changing the capacitance of the capacitor C33. Increase the value of C33 to lower the amplitude of the high range level. Decrease the value of C33 to raise the amplitude. The adjustnent of the low range frequency response is performed by changing the capacitance of the capacitors C35 and C37. Decrease the capacitance of C35 and C37 to lower the amplitude of the low range level. Increase the capacitance of C35 and C37 to raise the amplitude. Note: When the sending frequency response is changed, the sending loudness rating (SLR) value may change. It is required to measure the SLR value again and verify it.
5)
Receiving Frequency Response Adjustment The adjustment of the low range frequency response is performed by changing the capacitance of the capacitor C26. Increase the capacitance of C26 to raise the amplitude of the low range level. Decrease the capacitance of C26 to lower the amplitude. The adjustment of the high range-frequency response is performed by changing the capacitance of the capacitors C29. Decrease the capacitance of C29 to raise the amplitude of the high range level. Increase the capacitance of C29 to lower the amplitude of the high range level. Note: When the receiving frequency response is changed, the receiving loudness rating (RLR) value may change. It is required to measure the RLR value again and verify it.
6)
Side-Tone Adjustment The side-tone adjustment is performed by the C-R networks corresponding to the individual countries. For adjusting the side tone, select the corresponding C-R network by the designated DIP switch and adjust the STMR value to the specified value by the values of capacitors and resistors. The dip-switch set to ON corresponds to the country as shown in the table. Note: When the C-R network is changed for the side tone adjustment, the receiving loudness rating (RLR) value may change. It is required to measure the RLR value again and verify it.
Country UK
Belgium Denmark
Dip-switch Symbol (network) SW1-1 SW1-2 SW1-3 SW1-4 R19, C16, R22 R20, C17, R23 R21, C18, R24 R62, C47, R63
Italy/
Norway
7)
DC V-I Characteristics The DC V-I characteristics at the time of the line supplement is performed by diodes D10, D11 and SW4-5, and can be selected from two types by setting of dip-switch 45. In case SW4-5 is set to ON, since D10, and D11 are short-circuited, V/I value is lowered. In case SW4-5 is set to OFF, V/I value is raised.
40838301TH Rev.1
A3 - 55
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