User manual

Chapter 2 Installation and Setup ASM-20 Installation and Operation Manual
2-6 Connecting the Cables
Table 2-3. Async Character Length Setting
Start Bit Data Bits Parity Stop Bit No. of Bits
1 5 NONE 2 8
1 6 NONE 1, 1.5, 2 8
9
1 6 ODD, EVEN 1, 1.5, 2 9
10
1 7 NONE 1, 1.5, 2 9
10
1 7 ODD, EVEN 1, 1.5, 2 10
11
1 8 NONE 1, 1.5, 2 10
11
1 8 ODD, EVEN 1, 1.5, 2 11
2.6 Connecting the Cables
The line and digital interface connectors (located on the rear panel of ASM-20)
consist of a DTE interface connector and a five-screw terminal block. The DTE
interface connector may be 34-pin for V.35 (see Figure 2-2), 15-pin for X.21 (see
Figure 2-3) or 25-pin for RS-530/RS-422 or RS-232/V.24.
The terminal block provides a connection between transmit and receive twisted
pair lines. The transmit and receive pairs are polarity insensitive. The transmit pair
is connected to the terminals marked XMT, the receive pair is connected to the
terminals marked RCV. If the cable is shielded, the shield may be connected to the
terminal marked GND.
CAUTION: FOR CONTINUED
PROTECTION AGAINST RISK OF
FIRE, REPLACE ONLY WITH SAME
TYPE AND RATING OF FUSE.
DTE
X
MT RCV GND
Figure 2-2. ASM-20 - V.35 Rear Panel
~230 VAC
-1A T 250V
DTE
X.21
Line Connector
CAUTION: FOR CO NTINUED
PROTECTION AGAINST RISK OF
FIRE, REPLACE ONLY WITH SAME
TYPE AND RATING OF FUSE.
Figure 2-3. ASM-20 - X.21 Rear Panel