Technical Manual Technical Description
© SPECTRA ENGINEERING 2006 Revision 4.2.3
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9. Re-install the exciter module (after it has been modified for this option)
with the qty2 4x35mm machine screws.
10. Connect all the necessary connectors to the exciter module.
11. Replace the rear connector label with that supplied.
Method – Exciter Module:
1. Remove the cover to the exciter module.
2. Remove the exciter Printed Circuit Board from the base unit.
3. Remove the following components from the exciter board:
• X1 - TCXO
• R30 & R31
• TR7
4. Install and solder the right angle SMB PCB mounted connector into the
CN3 position on the exciter Printed Circuit Board.
5. Re-install the exciter Printed Circuit Board onto the base unit.
6. Re-install the cover to the exciter module.
MX800 Controller Setup
1. The TX external reference frequency that will be used is required to be
programmed into the radio via MXTOOLS. This can be achieved in the
MXTOOLS ‘Configuration’ heading under the ‘Hardware’ folder, insert
the required frequency into the ‘TX Reference Frequency’ box.
2. Download the Configuration change to the MX800.
MX800 Testing:
1. Connect a Communications Test Set via the RIB to the MX800.
2. Set the switches on the RIB to Line Audio and E&M.
3. Connect the External Reference source to the MX800 BNC connector.
4. Check that the exciter VCO is in ‘lock’.
5. Check that all the Transmit parameters (i.e. TX power, modulation, freq.
error) are correct. Correct any anomalies where necessary.
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