Table 1.
Summary of switch settings, showing factory defaults
3.1 DETAILED SWITCH SETTINGS
This 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 Model 1070's default
would not provide correct results.
3.1.1 DATA RATE
Switches 1 thru 3 are set in combination to allow the Model 1070 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.
5
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
Internal Clock
Switch 6
RTS/CTS Delay
On
Switch 7
RTS/CTS Delay
Off
Switch 8
Carrier Control
Off
Constant
8 ms
9,600 Bps
}
}
3.1.2 TRANSMIT CLOCK
Switch 5 is used to specify the clocking method. The Model 1070
can provide an internal clock (Pin 15), or receive an external clock
(from Pin 24).
Switch 5
On = External
Off = Internal
3.1.3 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 Model
1070 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
On = 53 mS
3.1.4 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". In a multi-point environment, contention for the line is
"controlled" by RTS.
Switch 8
On = Controlled by RTS
Off = Constant Carrier
6
