Connect Tech NT960/PCI Uživatelský manuál stáhnout pdf (Strana 71)

Chapter 4: Appendix D - RS-485/422 Option 4-19

Intellicon-NT960/PCI User's Manual, ver. 0.02

Switch positions 5 and 6 on switch blocks S1, S2, S3, and S4

allow the "receiver stations" (RxD and CTS) to have either a DC

load of 150 ohms or an AC load of 150 ohms in series with a 50

nF capacitor. Please refer to the examples following for these

configuration options and their switch settings.

Examples:

1. The following example shows the switch settings for Station A

as per Figure 17 where TxD and RTS have a load of 150

Ω

switch blocks

S1, S2, S3, or S4

2. The following example shows the switch settings for Station B

and Station C as per Figure 17.

switch blocks

S1, S2, S3, or S4

3. The following example shows the switch settings for Station

D as per Figure 17 where RxD and CTS have a DC load of

150

Ω

switch blocks

S1, S2, S3, or S4

4. The following example shows the switch settings for Station

D as per Figure 17 where the circuit is > than 50 metres in

length and RxD and CTS have an AC load of 150

Ω

in series

with 50 nF.

switch blocks

S1, S2, S3, or S4

1 2 ... 66 67 68 69 70 71 72 73 74 75 76 ... 87 88

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Connect Tech NT960/PCI Uživatelský manuál Strana 71