M8SL2-00-002-812 T854 Functional Testing C4.3
© Copyright Tait Electronics Limited August 2004. All rights reserved.
4.1 Current Consumption
1. Connect the T854 to a 13.8V power supply.
2. Connect an RF power meter to the T854 output socket.
3. Check that the current in the 13.8V power cable is less than 150mA.
4. Key the T854 by earthing the Tx-Key line (the carrier “On” LED should light).
5. Adjust RV310 (power control) to obtain 25W output power.
6. Check that the current is less than 5.5A
4.2 Output Power
1. Connect an RF power meter with suitable attenuation to the T854 output socket.
2. Key the T854 by earthing the Tx-Key line.
3. Check that the output power adjusts to ≥25W with RV310 (power control) turned
fully clockwise
4.3 Output Frequency
Connect the T854 output to a frequency counter via a 40dB attenuator pad. Measure the
output frequency and, if necessary, adjust the TCXO (=IC700) to trim to the nominal fre-
quency (±100Hz).
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