HEIDENHAIN iTNC 530 Service Manual page 276

Accessories Following accessories can be very helpful and are available from computer vendors:
16 – 276
D-sub adapter connector 25-pin
Adapts from female to male
D-sub adapter connector 9-in
Adapts from female to male
Adapter RS 232 to USB
For laptops or PCs without RS 232 interface, but with USB interface
D-sub adapter connector 25-pin
"opto bridge"
Metallically isolates the serial interface by means of integrated opto
couplers and thus protects from:
- Overvoltages
- Different load potentials by different main current circuits
- Interference voltlages on ground lines
HEIDENHAIN Service Manual iTNC 530