Black Box MD1641A, MD1640A manual DIP Switches #13-16, AT vs. Series II Result Codes

Models: MD1640A MD1641A

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SERIES II INTELLIGENT DATA/FAX MODEMS

Sw.

Function

Position Effect

#8

Command Mode Enabled*

UP

 

(Sync/Async/Dial/Leased)

DOWN*

#9

Local/Remote* LoopBack

UP

 

(Async/Sync/Dial/Leased)

DOWN*

#10

Dial-Up*/Leased-Line

UP*

 

 

DOWN

#11

“AT" vs. “Series II" Result Codes*

UP

 

(Asynchronous)

DOWN*

#11

Internal*/External Clocking

UP

 

(Synchronous)

DOWN*

#12

Sync/Async Mode*

UP

 

 

DOWN*

*Factory Default Setting

DIP Switches #13-16

SWITCH

CONDITION

EFFECT

#13/#14

UP/UP*

28.8 K bps Operation

#13/#14

DOWN/UP

19.2 K bps Operation

#13/#14

UP/DOWN

14.4 K bps Operation

#13/#14

DOWN/DOWN

9600 bps Operation

Note: Modem baud rate commands such as $MB33600 override the setting of these speed selection switches (DIP switches #13 and #14).

#15

UP*

CD/DSR from Interface

#15

DOWN

CD/DSR Forced On

#16

UP

2-Wire Leased Line

#16

DOWN*

4-Wire Leased Line

*Standard Factory Default Setting

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Page 139
Image 139
Black Box MD1641A, MD1640A manual DIP Switches #13-16, AT vs. Series II Result Codes