Comtech EF Data XTRT-400C Operation And Installation Manual page 193

Operation Addendum, Internal 10MHz reference with Upconverter Bypass Feature
Operation Addendum, Internal 10MHz reference with
Upconverter Bypass Feature
Description
The internal block upconverter can be bypassed for operation with
an input of 13.75 to 14.5 GHz..
For operation in this mode do the following:
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•
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To adjust the 10MHz reference signal to compensate for frequency
drift over time do the following:
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•
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MNC-0000-038
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Remove the loopback cable on the rear of the amplifier.
Terminate the upconverter O/P port with an SMA Male 50 ohm
termination Xicom Part Number 541-0001-002.
Terminate the IF input port with a Type N male 50 ohm termination
Xicom Part Number 541-0003-002.
Remove the dust cover screw labeled 10 MHz OSC ADJ.
With a small non-conductive adjustment screwdriver, adjust the
oscillator.
Replace the dust cover screw.
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