Black Box 5000 - Manual (Page 90)

Multiserver 5000
88
Table 9-3. Sync Channel Characteristics (continued)
Option Protocol Default Description
Number of ASCII Bisync 1 Sets the number of leading pad characters to be
Leading Pad EBCDIC Bisync 1 transmitted at the start of the block. This is used
Characters* H-P Sync 1 for a time delay (1-9).
RTS/CTS 3
Sync-Pad 1
Number of ASCII Bisync 1 Sets the number of trailing pad characters to be
Trailing Pad EBCDIC Bisync 1 transmitted at the end of the block. External device
Characters* H-P Sync 1 will have time to recognize the end of a block.
RTS/CTS 3
Sync-Pad 1
Buffer DLC NONE Used to regulate data transmission from a device
Control ASCII Bisync NONE attached to the port. The default setting (NONE)
EBCDIC Bisync NONE removes all buffer control. When this option is
H-P Sync NONE configured to CTS, the Multiserver will delay the
RTS/CTS NONE CTS signal up to 250 milliseconds for buffer control.
Sync-Pad NONE
MICOM DLC NONE
MICOM Voice NONE
Encoding DLC NRZ Depending upon attached device, select NRZ or
NRZI.
Idle Fill DLC FLAG FILL There are four Idle Fill options. Selection depends
upon attached equipment:
• Mark Fill sets an idle pattern of binary 1s between
DLC frames. Use this for IBM 3270 SDLC half-
duplex operation.
• Fall Fill sets the idle pattern of hexadecimal 7E
(flag) between DLC frames.
• Auto Fill and A128 Fill automatically adjust idle
between DLC frames to mark at the end of the
transmission, or flag when the transmission is not
finished. For IBM AS/400 5250 SDLC operation, set
to either Auto Fill for Modulo 8 or A128 Fill for
Modulo 128 frame sequencing.
Clock Flow DLC ENABLE When Clock Flow Control is enabled, the local
Control ASCII Bisync ENABLE Multiserver controls flow on the local port if the
EBCDIC Bisync ENABLE Channel Clocking Option has been set to
H-P Sync ENABLE RX-Internal. It does this by halting the channel’s
RTS/CTS ENABLE clock. If NONE is chosen, there is no local data flow
Sync-Pad ENABLE control. The data is discarded, and it is up to the
MICOM DLC ENABLE remote Multiserver to issue a retransmit request.
* Prompt only. No menu.