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3060/V24
102001UA
1-2
INSTALLATION AND OPERATIONS MANUAL
OPERATION
PATTON ELECTRONICS CO.
Anti-streaming
A typical problem often encountered is a “
STREAMING
” remote terminal. The streaming
problem can tie up an entire circuit until the offending device has recovered or is powered
down. A streaming condition occurs when a Sub-Channel remains active, disrupting the
polling sequence. The 3060/V24 (MD-V.24/TCB) provides two user selectable modes of
controlling a streaming condition, an automatic anti-streaming Abort Timer with eight
selectable block lengths and a setting to disable anti-streaming for large data block transfers,
and a manual Operator Control mode (front panel push button switch).
Automatic Anti-Streaming
- Automatic Anti-streaming will block the asserted control signal
from the Sub-Channel Port, releasing the 3060/V24 (MD-V.24/TCB) to accept requests from
any other Sub-Channel that has not been locked out due to a streaming condition. When a
Sub-Channel is locked out for streaming, a visual indication, by Sub-Channel, is provided on
the front panel.
The Sub-Channel will no longer receive data or CTS from the Master Port.
Any data sent to the Master Port by the streaming device will be lost
. Once a Sub-Channel is
locked out due to streaming, the Sub-Channel will remain locked out until the attached device
removes the streaming condition. If RTS is held active, RTS must become inactive, if
continuous data transitions have triggered the Anti-Stream logic, the transitions must stop
before the 3060/V24 (MD-V.24/TCB) will clear the Anti-Stream logic to that Sub-Channel.
Removing the Sub-Channel via the front panel disable switch will not clear the Anti-stream
logic for a Sub-Channel once it has been activated.
Manual Anti-Stream
- A streaming condition caused by one of the attached terminals can be
quickly corrected by the Patton 3060/V24 (MD-V.24/TCB) via the associated front panel
locking switches. A switch is provided for each Sub-Channel and permits the rapid removal of
a streaming terminal without having to disconnect any cables or power down the offending
terminal. Terminals may be selectively removed for self-test and maintenance without affecting
the remaining Sub-Channels. Once the streaming condition has been corrected, the front
panel switch is simply depressed to the locked (Enable) position (Green indicator ON) to re-
establish normal operation. Removing a Sub-Channel with the front panel switch will block
data from the Sub-Channel going to the Master Port but will not block data going from the
Master Port to the Sub-Channel as the Automatic Anti-Stream option did.