ICS ELECTRONICS 4809A, Instruction Manual

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2.11 JUMPER SETTINGS
2.11.1 4809A Jumper Settings
The 4809A has five jumpers as shown in Figure 2-17. Table 2-5 lists the
jumper functions and their factory settings. For RS-232 serial signals,
leave the jumpers in the ‘232’ position. For RS-422 or RS-485 signals, set
jumpers W4, and W5 to the ‘422’ position.
TABLE 2-5 4809A JUMPER SETTINGS
Jumper Function Factory
Setting
W1 Selects input power REG
P1 for direct regulated 5 Vdc power
REG for unregulated DC power
W2 Set for EPROM size. Not user changeable. 512
W3 Write Enable. Installed enables saving setup parameters Installed
in EEPROM. Remove to block writes to configuration
tables
W4 RS-232/RS-422 signal selection Jumpers 232*
W5 232 for RS-232 signals 232*
422 for RS-422 signals
Notes: * Set RS485 to 1 for half-duplex operation or to 0 for full-duplex operation.
GPIB
Serial I/O
1
1
1
RDY
LST
FULL/ PWR
TLK
BSY/
1
+ -
J3
J4
J1
J2
P1 REG
W1
422 232
422 232
W5
W4
W2
256 512
W3
ERR SRQ
Figure 2-17 4809A W4 and W5 Jumpers set to RS-422 Position