Bosch Appliances 3922 988 43318 manual Graph reference examples, Con

Digital Congress Network Installation and Operating Manual Chapter 10 - Installation Techniques en 10-9

10.4.3 Graph reference examples

FIG 10-12in combination with the PCF graph (FIG 10-10)gives examples of how to calculate the PCF value of a single trunk-outlet. Using these examples, the total PCF value of all three trunk-outlets of a CCU can be calculated.

TS	=	Trunk-splitter	DA1 = Dual Audio Interface units
TT	=	Table-top discussion units	MPC = Multi-purpose Connection units
CON	=	Concentus units

NOTE: (1 m = 39.37 in)

GRAPH REFERENCE

Y axis

X axis (max.)

PCF

Ext. Cable (m) BLOCK DIAGRAMS

PCF CALCULATION

Tap-off

TT = 59 x 1 PCF = 59 PCF

TT

1

TT 49

TT

50

TT

59

TS

TS = 1 x 1 PCF =

1 PCF

60

0

TOTAL = 60 PCF

50 x 2 m = 100 m

9 x 2 m = 18 m

DAI = 40 x 1.5 PCF = 60 PCF

DAI

1

DAI

40

TOTAL = 60 PCF

60

0

40 x 2 m = 80 m

MPCU = 30 x 2 PCF = 60 PCF

60

0

MPC

1

MPC

30

TOTAL = 60 PCF

30 x 2 m = 60 m

CON

1

CON

24

CON = 24 x 2.5 PCF = 60 PCF

TOTAL = 60 PCF

60

0

24 x 2 m = 48 m

TT = 34 x 1 PCF =

34 PCF

TS

Tap-off

TT

1

TT

34

TS = 1 x 1 PCF =

1 PCF

35

100

TOTAL = 35 PCF

+ Ext. cable

=

60 PCF

100 m

34 x 2 m = 68 m

Ext. cable

DAI = 22 x 1.5 PCF =

33 PCF

100 m

TS

DAI

1

DAI

22

TS = 1 x 1 PCF =

1 PCF

Tap-off

TOTAL = 34 PCF

35

100

+ Ext. cable =

60 PCF

22 x 2 m =44 m

Ext. cable

MPC = 17 x 2 PCF = 34 PCF

100 m

TS

Tap-off

MPC

1

MPC

17

TS = 1 x 1 PCF =

1 PCF

TOTAL = 35 PCF =

35

100

+ Ext. cable =

60 PCF

17 x 2 m = 34 m

Ext. cable

CON

1

CON

13

CON =13 x 2.5 PCF = 32.5 PCF

100 m

TS

TS = 1 x 1 PCF =

1 PCF

Tap-off

TOTAL = 33.5 PCF =

35

100

+ Ext. cable =

60 PCF

13 x 2 m = 26 m

Ext. cable

FIG 10-12 PCF Calculation examples for a single trunk-line

Bosch Security Systems 04-2003 3922 988 43318 en Calculating the PCF of a System with respect to cable length