Symbol LS7708 Product Reference Guide3-10
The signal descriptions in Table 3-2 apply to the connector on the scanner and are for reference only.
Table 3-2. Scanner/Host Signal Pin-outs
Symbol LS7708
Pin IBM Synapse RS-232
Keyboard
Wedge USB Download
1 Reserved SynClock Reserved Reserved Jump to Pin 6 Reserved
2 Power Power Power Power Power Power
3 Ground Ground Ground Ground Ground Ground
4 IBM_A(+) Reserved TxD KeyClock Reserved TxD
5 Reserved Reserved RxD TermData D + Reserved
6 IBM_B(-) SynData RTS KeyData Jump to Pin 1 RxD
7 Reserved Reserved CTS TermClock D - Reserved
8 Reserved Reserved Reserved Reserved Reserved Reserved
9 Reserved Reserved Reserved Reserved Reserved Reserved
10 Reserved Reserved Reserved Reserved Reserved Reserved
Table 3-3. RS-232 Auxiliary Port Pinouts
Pin # Signal Unterminated Wire* Description
1-
2 DTR Brown Output, Data Terminal Ready
3 RXD Orange Input, Received Data
4 VCC Red 5 volts
5 RTS Green Output, Ready to Send
6 GND Black Ground
7 CTS Purple Input, Clear to Send
8-
9 TXD Yellow Output, Transmitted Data
10 -
*The RS-232 port can power a connected device, such as a scale, magstripe reader, or hand-held scanner. The
device’s mating connector is wired to the end of an unterminated cable. Contact the Global Customer
Interaction Center to obtain an unterminated cable for this port. The following table lists unterminated wires
and their functions.
If the device attached to the RS-232 Auxiliary Port is self-powered, do not connect the red wire (VCC) to the
mating connector. This prevents the device from back-powering the LS7708.
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