USER CHANGEABLE SETTINGS
<PJ1> LOCATION #1 - - NON-TOTAL KEY (NT1)
Jumper on = Upper right key <non-total>
Jumper off = All count keys add into grand total
<PJ1> LOCATION #2 - - COMPUTER OR PRINTER OUTPUT SELECTION
Jumper on = Data output to both Printer and Computer ports.
Jumper off = Data output to Computer port only.
<PJ1> LOCATION #3 - - COMPUTER PORT PROTOCOL TYPE (BID)
Jumper On = Bi-directional data control utilizing ACK/NACK protocol.
Jumper Off = Unidirectional data flow to computer.
<PJ1> LOCATION #4 - - ASCII DATA WORD LENGTH
Jumper On = Word length set to 7 bits.
Jumper Off = Word length set to 8 bits.
<PJ1> LOCATION #5 - - PARITY STATUS
Jumper On = Parity Enabled.
Jumper Off = Parity Disabled.
<PJ1> LOCATION #6 - - PARITY TYPE (provided Parity has been enabled)
Jumper On = Even Parity.
Jumper Off = Odd Parity.
<PJ1> LOCATION #7/8 - - BAUD RATE SELECTION (Computer Port)
BAUD RATE LOCATION #7 LOCATION #8
1200 Jumper Off Jumper Off
2400 Jumper Off Jumper On
4800 Jumper On Jumper Off
9600 Jumper On Jumper On
Note: Printer Port set in software to 1200 band – 8 data bits – No Parity.
COMPUTER INTERFACE
The COMP-U-DIFF workstation may be connected directly to a lab computer system by means
of the supplied communications interface cable. The port is EIA and RS-232 compatible with
pins configured as shown below:
PIN # SIGNAL NAME
2 RECEIVE (used in bi-directional mode only)
3 TRASMIT
4 REQUEST TO SEND (RTS)
5 CLEAR TO SEND (CTS)
7 SIGNAL GROUND
20 DATA TERMINAL READY (factory set option)