ER-A520/A530 Dealer Knowledge Book
Page 52 of 266 Specifications subject to change without notice: Revision date 10/07
3. ECR Pin Outs:
The DB-9 of the ER-A520 and ER-A530 follows EIA computer specifications for its pin outs as
shown below:
4. Belden Cable Chart:
The chart below is the specs for a Belden cable that can be used for communications.
RS232 Serial Cable
Maximum Distance from POS to Printer 50 ft. or less
Type Cable Twisted Pair
Wire Gauge 24 AWG / Shielded
Belden Number 9540
5. Cable Chart/Distances:
Typically, the recommended cabling distance length will be less than 25 feet when the data rate is
9600 bps or greater. If transmission errors occur, follow these procedures to determine the cause
of the problem:
1) Reduce the baud rate – when the preset is available.
2) Reduce the cable length – when the baud rate is fixed.
3) Use a cable with a lower capacitance per foot rating.
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