Datasheet

3-7
Cisco Interface Card Hardware Installation Guide
OL-1919-18
Chapter 3 Connecting Serial Interface Cards to a Network
Serial High Speed WICs (HWICs)
Figure 3-7 4-Port Multiprotocol A/S HWIC Front Panel (HWIC-4A/S)
8-Port RS-232 Asynchronous/Synchronous HWIC
The 8-port RS-232 asynchronous/synchronous HWIC (HWIC-8A-RS232), illustrated in Figure 3-8,
provides 8 asynchronous/synchronous RS-232 interfaces in both DCE and DTE formats. Data rates of
up to 230.4 kbps are supported in asynchronous mode, and up to 256 kbps in synchronous mode.
Figure 3-8 8-Port RS-232 Asynchronous/Synchronous HWIC Front Panel (HWIC-8A/S-RS232)
8-Port Asynchronous HWIC
The 8-port asynchronous HWIC (HWIC-8A), illustrated in Figure 3-9, provides 8 asynchronous RS-232
interfaces in DTE format, at data rates of up to 230.4 kbps.
Caution To comply with the Telcordia GR-1089 NEBS standard for electromagnetic compatibility and safety,
connect the 8-port asynchronous HWIC (HWIC-8A) only to intra-building or non-exposed wiring or
cabling. The intrabuilding cable must be shielded and the shield must be grounded at both ends.
Figure 3-9 8-Port Asynchronous HWIC Front Panel (HWIC-8A)
CONN HWIC-4A/S
S3
117620
S1
S2
S0
CONN LED
Serial ports Serial ports
CONNCONN
HWIC-8A/S
0-3
4-7
117622
CONN LEDs
Serial ports
CONN
HWIC-8A
0-7
117621
CONN LED
Serial ports