Comtrol PCI 422 - Manual (Page 6)

6
Building DB9 Loopback Plugs
Building DB9
Loopback Plugs Loopback connectors are plugs, with pins wired together, that are used in
conjunction with the RocketPort diagnostic software to test serial ports. To build a
DB9 loopback plug, wire the following pins together:
• Pin 2 to 8
• Pin 3 to 7
Specifications
The following tables illustrate RocketPort PCI 422 conditions and specifications.
Pin DTE Mode DCE Mode
1 Not Connected Not Connected
2 TxD- RxD-
3 RxD+ TxD+
4 to 6 Not used Not used
7 TxD+ RxD+
8 RxD- TxD-
9 Chassis Ground Chassis Ground
Environmental Condition Value
Air temperature:
System on
System off 0 to 40
°c
-20 to 85
°c
Humidity (non-condensing):
System on
System off 8% to 80%
20% to 80%
Altitude:
0 to 10,000 feet
(0 to 3048 meters)
Electromagnetic Compliance
Emission:
Canadian EMC requirements
CISPR-22/EN55022 Class B
FCC PART 15: Class B
Immunity:
EN50082: 801-2 ESD, 801-3 RF, 801-4 FT
Safety:
UL recognized.