S1 SUMMARY TABLE

 

Position

Function

Factory Default

 

 

 

 

 

 

 

 

 

S1-1

Clock Source*

On

}

Internal

 

 

S1-2

Clock Source*

On

 

 

 

 

 

 

 

 

 

S1-3

RTS/CTS Delay

On

 

Short Delay

 

 

S1-4

LDL Control

Off

 

Disabled

 

 

 

 

 

 

 

 

 

S1-5

Carrier Control

Off

 

Constant

 

 

 

 

 

 

 

 

 

S1-6

DTE Control of RDL

Off

 

Disabled

 

 

 

 

 

 

 

 

 

S1-7

DTE Control of LAL

Off

 

Disabled

 

 

 

 

 

 

 

 

 

S1-8

V.54 Enable/Disable

Off

 

Enabled

 

 

 

 

 

 

 

 

*See Note in SWITCH SET S1 (Below) for X.21 Clock Sources

Figure 3. Summary of DIP Switch Default Settings for S1

SWITCH SET S1

The configuration switches on S1 set clock source, RTS/CTS delay, carrier control, loopback tests. The default settings are summarized in Figure 3 (above).

S1-1 and S1-2: Clock Source

Switches S1-1 and S1-2 are set in combination to determine the source of timing for the Model 1090.

S1-1

S1-2

Setting

On

On

Internal

On

Off

Receive recover

Off

On

External transmit clock

Off

Off

Not a valid setting

NOTE: When an X.21 QuickConnect™ module is installed in

one or both base units, one base unit must be configured for receive recover clock source. The particular application will dictate which unit must be configured for receive recover clock source.

S1-3: RTS/CTS Delay

Switch S1-3 determines the amount of delay between the time RTS is activated and the 1090 activates the CTS.

S1-3

Function

On

Short delay (4-9 msec)

Off

Long delay (33-71 msec)

S1-4: LDL Control

Switch S1-4 determines whether the front panel switch can activate a Local Digital Loopback (LDL) diagnostic test.

S1-4

Function

On

LDL Control Enabled

Off

LDL Control Disabled

S1-5: Carrier Control

The setting for switch S1-5 determines whether the carrier is “constantly on” or “controlled by RTS”. This setting allows for operation in switched carrier or hardware handshaking applications.

S1-5

Setting

On

Controlled by RTS

Off

Constantly ON

S1-6: DTE Control of RDL

The setting for switch S1-6 determines whether DTE control of remote-digital loopback test is enabled or disabled. If DTE control is disabled, the RDL test can only be initiated by the front panel switch.

S1-6

Setting

On

DTE control enabled

Off

DTE control disabled

S1-7: DTE Control of LAL

The setting for switch S1-7 determines whether DTE control of local analog loopback test is enabled or disabled. If DTE control is disabled, the LAL test can only be initiated by the front panel switch.

S1-7

Setting

On

DTE control enabled

Off

DTE control disabled

5

6

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Image 4
Patton electronic 1090 user manual S1 Summary Table, Switch SET S1