User`s guide

20 MDS iNET 900 Series User’s Guide MDS 05-2806A01, Rev. E.1

NOTE: It is very important to use attenuation between all units in the

test setup. The amount of attenuation required will depend on

the number of units being tested and the desired signal strength

(RSSI) at each transceiver during the test. In no case should a

signal greater than –50 dBm be applied to any transceiver in

the test setup. An RF power output level of +20 dBm is recom-

mended. (See “Radio Conﬁguration Menu” on Page 48.)

2.3 STEP 2—MEASURE & CONNECT

THE PRIMARY POWER

The primary power at the transceiver’s power connector must be within

10–30 Vdc and be capable of continuously providing a minimum of 8

Watts (typical power consumptions are: 760 mA @ 10.5 Vdc, 580 mA

@ 13.8 Vdc, and 267 mA @ 30 Vdc).

A power connector with screw-terminals is provided with each unit.

Strip the wire leads to 6 mm (0.25"). Be sure to observe proper polarity

as shown in Figure 2-2 with the positive lead (+) on the left.

NOTE: It will take about 30 seconds for the transceiver to power up

and be ready for operation.

Invisible place holder

Figure 2-2. Power Connector, Polarity: Left +, Right –

The transceiver must only be used with nega-

tive-ground systems. Make sure the polarity of the

power source is correct. The unit is protected from

reverse polarity by an internal diode and fuse.

2.4 STEP 3—CONNECT PC TO THE

TRANSCEIVER

Connect a PC’s Ethernet port to the LAN port using an Ethernet cross-

over cable. The

LAN LED should light. Alternately, you can use a serial

cable to connect to the

COM1 port. (Figure 2-3 on Page 23)

Wire Ports

Lead

Screws (2)

Binding

CAUTION

POSSIBLE

EQUIPMENT

DAMAGE