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Studio Color LCD Controller
Crossloading
7-31
7
If you do not have a null modem cable, you will need the
following (see Figure 7-8 on page 7-31):
• One standard DB9 female-to-DB9 male serial cable.
• One DB9 male-to-DB9 male null modem adapter, or
both of the following:
• One DB9 male-to-DB9 female null modem adapter
• One DB9 male-to-DB9 male gender changer
Note A gender changer looks exactly like a null modem
adapter. It would be a good idea to label them so you
don’t get them confused later.
The top diagram in Figure 7-8 shows the simplest connection,
using a male DB9-to-male DB9 null modem cable. This type
of cable is probably not commonly available. The bottom
diagram shows a connection using standard, off-the-shelf
cabling and adapters:
Figure 7-8. Two ways to interconnect controllers to
crossload memory.
(Male DB9)(Female DB9)
Serial Cable
Male DB9 to male DB9 null modem cable
Using a customized null modem cable
Standard DB9 to DB9 serial cable
Male DB9 to female DB9
null modem adapter
Male DB9 to male DB9
gender changer
Using standard cables and adapters