CPC1465

8

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R05

1.5 Application Signalling Characteristics

These tests assume crowbar protection across the

CPC1465 limiting peak potentials to 250 V.

1.5.1 LED Trigger Characteristics During MLT Signalling

For test conditions: (see Figure 9 on page 9).

1.5.2 LED Trigger Characteristics During Dial Test Set Signalling

For test conditions: (see Figure 9 on page 9).

Parameter

Conditions

Symbol

Minimum

Typical

Maximum

Unit

Applied ac Voltage

-

-

60

-

62

Applied ac frequency

-

-

2

-

3

Hz

Number of half-cycles applied

-

-

6

-

10

-

Total loop resistance

-

-

900

-

4500



Required opto-coupler response

Number of pulses per half-cycle applied

-

-

-

1

-

-

Pulse width (opto on)

(see Figure 9 on page 9)

10

-

-

ms

Pulse width (opto off)

(see Figure 9 on page 9)

10

-

-

ms

Parameter

Conditions

Symbol

Minimum

Typical

Maximum

Unit

Applied dc battery Voltage

-

-

-43.5

-

-56

Frequency (pulses per second)

-

-

4

-

8

-

Percent break

-

-

40

-

60

%

Number of pulses

-

-

6

-

10

-

Total Loop Resistance

-

-

200

-

4000



Required opto-coupler response

Number of pulses per make/break

applied

--

-

1

-

-

Pulse width (opto on)

(see Figure 9 on page 9)

10

-

-

ms

Pulse width (opto off)

(see Figure 9 on page 9)

10

-

-

ms