WIT2450
©
2000- 2005 Cirronet
™
Inc
60
M-2450-0000 Rev B
9
.2. Serial Connector Pinouts
Signal
WIT2450
OEM Pinout
HN-550
DB9
Pinout
GND 1
5
TXD 2
3
RXD 3
2
CFG 4
-
RTS 5
7
DTR 6
4
DCD 7
1
CTS 8
8
The HN-550 is wired as a DCE device and as such can be connected to DTE devices such
as PCs with a straight-through cable. When connecting a HN-550 to a DTE device, a
“null modem” cable is required. To effect a null modem cable, cross-wire TXD and
RXD and connect ground. The HN-550 can operate with just these three wires
connected. However, as the WIT2450 does not support software flow control, there will
be no flow control in this mode. If the DTE device fails to respond, connect DCD from
the HN-510 to the DTR and RTS inputs to activate the DCE device whenever the
WIT2450 asserts carrier.
When connecting to the WIT2450, make sure that all of the inputs (TXD, CFG, RTS and
SLEEP) are terminated for proper operation.
9.3. Approved Antennas
The WIT2450 is designed to ensure that no antenna other than the one fitted shall be used
with the device. The end user must permanently affix the antenna by using an adhesive
on the coupling such as
Loctite
, or ensure the antenna has a unique coupling. The table
below lists the antennas which can be purchased directly from Cirronet. Contact Cirronet
Technical Support with any questions.
Description Gain
Part
Number
Coupling
24dB Parabolic Dish
24dB
PAR2424
N
18dB Parabolic Dish
18dB
PAR2418
N
15dB Yagi Directional
15dB
YAGI2415
N
14dB Corner Reflector
14dB
CORNER2414
N
12dB Omnidirectional
12dB
OMNI2412
N
9dB Omnidirectional
9dB
OMNI249
N
9dB Corner Reflector
9dB
CORNER249
N
6dB Cironnet Patch
6dB
PA2400
MMCX
5dB Mobile Mount
5dB
MAG245
N
2dB Cirronet Patch
2dB
PA2410
MMCX
2dB Rugged Body Mount
2dB
RBM242
N
Dipole 2dB
RWA249R
Reverse
SMA