3040/V35
139001UA
2-4
I
NSTALLATION
A
ND
O
PERATIONS
M
ANUAL
S
ETUP
& I
NSTALLATION
P
ATTON
E
LECTRONICS
C
O
.
Receive Data Mode (SW18-7)
Setting switch SW18-7 to
ON
ON
ON
ON
ON
sets the 3040/V35 (CTS MD-V.35/TCB) into the Gated Mode.
Only the Sub-Channel that is currently active will receive the data from the master port. Setting
position 7 to
OFF
OFF
OFF
OFF
OFF
enables the Broadcast mode. Receive Data from the Master Port is sent to
all Sub-Channels.
Control Turn-Off Delay in “DATA” Switching Mode (SW15-3,4)
When configured to switch on DATA, switch SW15-3 and 4 set the Sub-Channel release time
in clocks. The value selected is the number of clocks at the current baud rate that must occur
without any data transitions on the Sub-Channel to indicate that Sub-Channel has completed
its transmission and the 3040/V35 (CTS MD-V.35/TCB) can resume servicing the other Sub-
Channels. The following table should be used to set this time period.
SW15-3
SW15-4 CLOCKS
ON
ON
16
ON
OFF
64
OFF
ON
256
OFF
OFF
2048
Switch on Data / Control (SW17-5,6,7,8)
Each sub-channel is independently selectable for switch on data or switch on an active
interface control lead. Set SW17 pos 5 to
OFF
OFF
OFF
OFF
OFF
if sub-channel 1 switch on Data is required.
Set pos 5 to
ON
ON
ON
ON
ON
if switch on interface control lead is desired. Position 6 thru 8 are associated
with sub-channels 2 thru 4.
Internal Baud Rates (SW15-5,6,7,8)
Switch SW15-5, 6, 7 and 8 select the master clock rate when Internal Clock Source is selected
on TX Clock Source or RX Clock Source. In addition the Fallback clock rate is also selected
with this option. When Fallback clocking is required, the RX Clock Source and TX Clock
Source should not be set to INTERNAL. SW15-5, 6, 7 and 8 selects the clock rate of the
Fallback Clock when Internal Clock Fallback is selected. The following table shows the
available rates.
