Black Box Black Box network services, PSD-4, PSD-8 manual Stap Identity

Page 8

 

 

 

 

CHAPTER 3: Installation

 

Table 1. Printed Circuit-Board Switch and Strap Settings

 

 

 

 

 

 

 

Possible

Factory

 

Stap Identity

Location

Settings

Setting

Function

 

 

 

 

 

MAIN DCE/DTE switch

 

DTE

DTE

Determines the PSD’s Main Channel

 

 

DCE

 

interface as either DTE (straight connection

 

 

 

 

to a modem) or as DCE (straight connection

 

 

 

 

to a computer or terminal).

 

 

 

 

 

Sub-channel

 

DTE

DTE

Determines the PSD’s sub-channel interface

DCE/DTE switches

 

DCE

 

as either DTE or DCE.

 

 

 

 

 

DATA RATE (kbps)

BR1

19.2

9.6

Selects the PSD’s internal data rate or external

(rotary switch)

 

14.4

 

clock from sub-channel 1.

 

 

9.6

 

 

 

 

7.2

 

 

 

 

4.8

 

NOTE: When using CLK 1 mode, the main

 

 

2.4

 

channel cannot be connected to a modem

 

 

1.2

 

working in internal clock.

 

 

CLK 1

 

 

 

 

 

 

 

Chas. GND

J1

CONNECT

DISCONNECT

The CONNECT setting connects signal ground

 

 

DISCONNECT

 

to chassis ground. The DISCONNECT setting

 

 

 

 

isolates them.

 

 

 

 

 

PIN 24 DIS

J1A

ENABLE

ENABLE

Exits main channel when PIN 24 is disabled.

 

 

(jumpered)

 

 

 

 

DISABLE

 

 

 

 

(NO jumper)

 

 

 

 

 

 

 

TIME OUT

J2

1.7

108

Selects the time-out period (in seconds) after

 

 

13.5

 

which the PSD will automatically disable the

 

 

108

 

sub-channel. Selecting DISABLE will stop

 

 

DISABLE

 

the PSD from automatically disabling any

 

 

 

 

sub-channels.

 

 

 

 

 

CONTENTION

J5

RTS

RTS

Determines the sub-channel selection and

 

 

DATA

 

deselection.

 

 

 

 

 

FORMAT

J6

ASYNC

SYNC

Selects the data format.

 

 

SYNC

 

 

CLOCK

J7

NORMAL

NORMAL

Determines the source of the clock for

 

 

FROM EXT DTE

 

synchronous data. Set to NORMAL for

 

 

 

 

internally derived clock. Set to FROM EXT

 

 

 

 

DTE for externally dermined clock from a

 

 

 

 

connected DTE.

 

 

 

 

 

EXT. BUFFER

S1

ON

OFF

Activates or deactivates the extra buffer.

(PSD-8 only)

S2

OFF

 

 

 

 

 

 

 

7

Image 8
Contents PSD-4 PSD-8 FCC Statement PSD-4 and PSD-8 Trademarks Specifications Highest PriorityIntroduction Choosing a Site InstallationConfiguring the PSD Printed Circuit Board Stap Identity PSD-4 and PSD-8 Installation System SynchronizationAC Power Operation and Troubleshooting Changing Setting During OperationTroubleshooting OperationBack panels of the PSD-4 top and the PSD-8 bottom Technical Guide Control SignalsBlock Diagrams Main Channel DTE with Sub-Channel DCE Main Channel DCE with Sub-Channel DCE Park Drive Lawrence, PA
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