I N S T A L L A T I O N
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4. Place the radio on the mechanics as recommended. Also ensure that all the mounting holes of the printed circuit
board are on the same level. This reduces mechanical stress of components and connectors on the board, and
guarantees a longer product lifetime. Never mount the board in a manner that the mounting arragement causes
twisting or bending to it.
5. Fasten the radio using mounting screws and procedures suitable for the surface material. Do not overtighten the
screws.
6. Connect the GPS antenna.
Optional
Accurate torque must be used for the RF connectors
1
:
• for the GPS SMA connector in CA-127, the torque needed is 0.34…0.57 Nm (material: brass).
For lightning protection, see Section Lightning protection on page 15.
The GPS antenna is not needed if the GPS functionality of the radio is not used.
7. Connect the TETRA antenna.
Accurate torque must be used for the RF connectors
:
• for the TETRA TNC connector in CA-126, the torque needed is 0.46…0.69 Nm (material: brass).
For lightning protection, see Section Lightning protection on page 15.
The TETRA antenna is not needed if the TETRA functionality of the radio is not used.
8. Connect the IO cable.
Optional
IO cabling is not needed if the IO functionality of the radio is not used.
9. Connect the serial/AT cable.
Optional
The serial/AT cable is not needed if the AT functionality of the radio is not used.
10.Ensure that all the cables which are connected to the radio module are fastened in a manner that does not cause
bending, twisting, pushing, pulling, or vibrating in the connectors of the radio.
11.Connect the power cable. Set the IGS signal (the green wire in the power cable) to supply voltage. The red
Power On LED lights up.
12.If the GPS is ON, the green GPS LED (the outer LED) starts blinking. If the GPS antenna is attached, the LED
lights up (continuously) when the radio has a GPS fix.
For information on using the GPS functionality, see Section Tracking and positioning on page 17 .
13.If the radio is configured with the network parameters, the green LED in the middle starts blinking. If the TETRA
antenna is attached and the radio is in network coverage, the LED lights up when the radio has network service.
Powering up considerations
Connecting the power supply
The prerequisites to power up the TDM880i are the following:
• a main DC supply (10.6…16.0 V) in the connector X104, pins 1,2,3. (6,7,8 = GND)
• at least one of the three IGS signals must be held high.
Cabling
Connecting the power supply
DC input from 5A and 1A (IGS) fused 12 V power source line. Make sure that the matching board is properly
attached to the wire connector.
1. When the TDM880i's own accessory antenna is used, the above-mentioned torque values are valid for both ends of the antenna ca-
ble. If you use other antennas/cables/connectors than the ones listed as TDM880i accessories, the valid torque values for those must
be checked from their manufacturer. The above-mentioned values are valid for the TDM880i connectors in this case, too. For more
information on how to fix the TDM880i accessory antenna (including the valid torque value), see the leaflet provided with the antenna
package.
Note:
Every IGS signal has its own logic ’high’ level, see Table 2.
Содержание TDM880i
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