3080/V24
124001UA
1-4
I
NSTALLATION
A
ND
O
PERATIONS
M
ANUAL
O
PERATION
P
ATTON
E
LECTRONICS
C
O
.
Interface Connections
All connections are made via industry standard EIA RS-232 DB-25 female connectors located
on the rear of the unit. The following interface leads are implemented, Chassis (1), TXD (2),
RXD (3), RTS (4), CTS (5), DSR (6), Sig Gnd (7), DCD (8), Plus Unreg (9), Minus Unreg (10),
TXC (15), RXC (17), DTR (20), XTXC (24). Pins 9 & 10 can be disabled by Jumpers on the
PCB.
Front Panel LEDs
Front panel LEDs are provided to indicate power is applied, RXD and TXD activity from the
Master Port, Sub-Channel activity of each individual Port, Anti-Stream condition of each Sub-
Channel and an indication of clock fallback condition.
Channel Enable / Disable Switches
Front panel switches allow operator intervention to remove an individual Sub-Channel from
accessing the Master Port. Positive latching type switches are provided for each Sub-
Channel port for isolating or removing a streaming terminal. The Sub-Channel is activated by
pushing the switch until it is in the “
IN
” position. The switch will indicate GREEN in color. To
disable a Sub-Channel push the switch until it locks in the “
OUT
” position, the switch will
indicate BLACK in color. Disabling a Sub-Channel with the front panel does not prevent the
Sub-Channel from receiving data from the Master Port only from sending data to the Master
Port.
Power Supply
A linear power supply is located internally, an external 110/220VA switch is located on the rear
of the unit. If chassis ground and signal ground need to be tied together this can also be
accomplished by switch selection. The unit is Rackmountable for 19" (or optional 23")
cabinets, by using the included Rackmount Kit. Safety approvals granted are UL, CSA and
TÜV. Emission approvals for FCC Class A and VFG243 have also been granted.
