
TELEPHONE INTERFACE MODULE (TIM)
14.11.3SWITCH SETTINGS ON 6132A (DID AP-
PLICATIONS)
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S14 | Initially set to NORM. If the |
| stays on constantly, or the termset does not answer |
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| reverses the battery polarity presented to the CO |
| from the Termset in DID applications. |
S5 | Place in 2W. This switch determines the interface. |
S4 | To get started, set to 900, with all capacitors in. Set |
| to variable and adjust R38 when performing the |
| actual balance. This balance network allows 600, |
| 900 or variable resistor (2k) resistive balance. Also, |
| 5 capacitors ranging from .002 ∝F to .032 ∝F in |
| octaves (i.e. .064 ∝F total capacitance) provide for a |
| capacitive balance. |
R38 | This potentiometer controls the resistive balance in |
| the variable mode of S4. |
S11 | Set to B. This switch swaps roles of |
| Lead. |
S12 | Supervisory Mode. Set to RB (Reverse Battery) for |
| DID applications. |
S15 | Set to a = inv, b = inv, c = d = e = off. |
| 'a' sets up inverted E&M inputs. |
| 'b' sets up inverted E&M outputs. |
| 'c' sets up continuous (vs. interrupted ringing. |
| 'd' sets up no |
| 'e' sets up no pulse correction. |
S3 | Set to 600. This switch provides 2W port terminat- |
| ing impedance. |
S14 |
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NORM |
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S5
2W
S4 |
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900 |
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ALL CAPS ON |
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| RB (REVERSE BURST) | |||||
R38 |
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TOP DOWN
S15
a = inv
b = inv
c = d = e = off
S3
600
BOTTOM UP
Figure