User`s guide

4: BSC 3270 Link Configuration Options
DC 900-1340I 89
• 4–8 links at 19,200 b/s
• 16 links for a 16-port ICP at 9600 b/s
To set this option using the DLI configuration file, use the dataRate parameter; for
example,
dataRate = 9600. See Table 7–1 on page 190.
4.2 Clock Source Option (2)
The clock source option determines the source of the data clock signals for a link. Data
clocking can be provided by the BSC software or received from an external source.
To set this option using the DLI configuration file, use the clockSource parameter; for
example,
clockSource = “external”. See Table 7–1 on page 190.
4.2.1 External
Protogate recommends the external clock setting for most communications applica-
tions that involve a cable length greater than 25 feet. In the external setting, the clock
generator is disabled. Data clocking must be supplied by an external source such as a
modem or modem eliminator. Receive clocking is input through the receiver timing
signal (EIA-232 pin 17), and transmit clocking is input through the transmitter timing
signal (EIA-232 pin 15). Your Freeway server is factory configured for external clocking
using a hardware jumper.
4.2.2 Internal
When the internal clock setting is used, the clock signal is generated at the rate specified
in the data rate option (Section 4.1). The generated clock signal is used for transmit
clocking and is output on the terminal timing signal (EIA-232 pin 24). Receive clocking
is input through the receiver timing signal (EIA-232 pin 17). The transmitter timing
signal (EIA-232 pin 15) is not used. Your Freeway server is factory configured for exter-