BRTS-100 ISDN TEST SET
21KHz
GEN
STATUS INDICATORS
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| AC IMPEDANCE |
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| + | - |
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| DEVICE | |
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| ~1vpp |
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| UNDER |
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| TEST | |
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| TA/NT |
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| 3 | 100 Ω |
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| 6 | SW1 |
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| HIGH DETECT | FILTER |
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| APPROX. 150 OHMS |
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| PRE AMP |
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| SAMPLE |
| WINDOW |
| 100 Ω |
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| COMPARATOR |
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| HOLD |
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ISPC I.C.
Figure 5-7. AC impedance.
VDD | 9V BATTERY |
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LOOP |
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DETECT |
| LOOP RESISTANCE |
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| 0 - APPROX. 5K | Ω |
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| MAX. AMOUNT 5mA |
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| 3 |
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| 6 |
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| 100 | Ω |
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Figure 5-8. DC continuity.
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