3.2 DETAILED SWITCH SETTINGS
The following section provides detailed information about the
function of each DIP switch, and lists all possible settings. Use this
section as configuration guide for applications where the 1070RC's
default would not provide correct results.
Data Rate
Switches 1 thru 3 are set in combination to allow the Model
1070RC to be used at data rates from 1200 bps up to 19,200 bps.
Switch 1
Switch 2
Switch 3
Setting
On
On
On
1.2 Kbps
Off
On
On
2.4 Kbps
On
Off
On
4.8 Kbps
On
On
Off
7.2 Kbps
Off
Off
On
9.6 Kbps
Off
On
Off
14.4 Kbps
On
Off
Off
19.2 Kbps
Off
Off
Off
19.2 Kbps
Note: Switch 4 is not used.
6
5
Transmit Clock
Switch 5 is used to specify the clocking method. The Model
1070RC can provide an internal clock (Pin 15),or receive an external
clock (from Pin 24).
Switch 5
On = Internal
Off = External
RTS/CTS Delay
Switches 6 and 7 are used together to specify RTS/CTS delay.
After request to send (RTS) is raised by the host terminal, the 1070RC
raises CTS after a slight delay in order to give the remote terminal time
to receive an incoming signal. Depending on the type of environment,
either a 0 mS, 8 mS or 53 mS delay can be selected.
Switch 6
Switch 7
On
On = 0 mS
On
Off = 8 mS
Off
Off = 53 mS
Carrier Enable
Switch 8 is used to specify how the carrier signal is raised. In most
point-to-point , full duplex applications, the carrier signal can remain
constantly "high".
Important Note:
In a multi-point environment, set
the host to "Constant Carrier" and each slave to "Controlled by RTS".
Switch 8
On = Controlled by RTS
Off = Constant Carrier
SWITCH SUMMARY TABLE
Position
Function
Factory Default
Switch 1
Data Rate
Off
Switch 2
Data Rate
Off
Switch 3
Data Rate
On
Switch 4
Not Used
N/A
Switch 5
Transmit Clock
Off
Switch 6
RTS/CTS Delay
On
Switch 7
RTS/CTS Delay
Off
Switch 8
Carrier Control
Off
Constant
8 ms
9,600 Bps
}
}