2070-6A Manual
6
2070-6Asm v2 Standard Manual A00886-A.doc
23
Network 2
A* installed
24
NA LINESYNC
SP3RXC-
25
Network 3
Powerup
CPU Reset
26
Network 4
Power
Down
FPLED
27
DC Gnd #1 DC Gnd #1
DC Gnd #1
28
+12V
Serial
-12V Serial
+5VDC
STBY.
29
+5VDC +5VDC +5VDC
30
DC Gnd #1 DC Gnd #1
DC Gnd #1
31
NA NA NA
32
NA NA NA
A1 Pin Assignments
Pin A
B
C
1
SP3-TXD+
2
SP3-TXD- SP6TXD- SP5TXD-
3
SP3-RXD+
4
SP3-RXD- SP6RXD- SP5TXC-
5
SP3-RTS+ SP1-
TXC(O)+
6
SP3-RTS- SP1-
TXC(O)-
SP5RXD-
7
SP3-CTS+ SP1-
TXC(I)+
8
SP3-CTS- SP1-
TXC(1)-
SP5RXC-
9
SP3-DCD+ SP1-RXC+
10
SP3-DCD- SP1-RXC- SP3TXD-
11
SP4-TXD+
12
SP4-TXD- SP4TXD- SP3RXD-
13
SP4-RXD+
14
SP4-RXD- SP4RXD- SP3RTS-
15
NA NA
16
NA NA SP3CTS-
17
NA NA
18
NA NA SP3DCD-
19
NA NA
20
NA NA SP3TXCO-
21
DC Gnd #1 CH2 Disable
22
Network 1
NA
SP3TXCI-
23
Network 2
NA
24
NA LINESYNC
SP3RXC-
25
Network 3
Powerup
CPU Reset
26
Network 4
Power
Down
FPLED
27
DC Gnd #1 DC Gnd #1
DC Gnd #1
28
+12V
Serial
-12V Serial
+5VDC
STBY.
29
+5VDC +5VDC +5VDC
30
DC Gnd #1 DC Gnd #1
DC Gnd #1
31
NA NA NA
32
NA NA NA
Installation
The 2070-6A has 5 front panel switches,
2 eight position dip switches for
configuring the Modem, and a 5 position
dipswitch for configuring the polarity of
the backplane signals. There is 1 dip
switch for each section of the Modem.
SW3 is for Modem “A” which uses the
C2S connector. SW7 is used for Modem
“B” which uses C20S. The Front Panel
toggle switches are labeled and organized
so that they are close to the connector
that they affect.
The switches labeled “ENABLE”
“DISABLE” turn the Modem section for
SP1 to SP4 On or Off. When the switch
is in the “DISABLE” position, the EIA-
232 section of C2 or C20 can be used
without interference from the Modem.
The “FULL” “HALF” switch allows you
the select Full or Half Duplex operation
for the Modem. With Half Duplex
operation only the “Audio Out” pins in
the M14 (C2, C20) are used. With Half
Duplex operation, all communication is
done over one pair of wires. This means
that communication can go in only one
direction at a time. Full Duplex
Operation allows communication in both
directions at once and therefore needs 2
pairs of wire (4 wire) to operate.
