The material contained in this document is the property of Electronics & Innovation Ltd., it is
subject to change without notice.
August 2012 Page 6 of 10 Revision B
3.1 Performance Checks
To determine the amplifier's performance carry out the following procedure.
3.1.1 Initial Check
The following check can be made whenever the condition of the unit is in
question.
(i)
Connect power supply. Switch on power and observe that the switch
illuminates.
(ii)
Connect the output of the 601L amplifier to 20 dB attenuator.
(iii)
Connect a calorimetric power meter (HP434 or equivalent) to the output of
the attenuator.
(iv)
Connect a sweep generator (Wavetek 2001 or similar) capable of
sweeping the frequency range 1 to 300MHz to the input connector,
ensure
that the output power of the generator is initially set to minimum
.
(v) Adjust the output level of the sweep generator to -10dBm.
(vi)
Adjust the input CW signal to any frequency between 0.5 and 1000MHz
for 1W output.
If you can not attain RF power, verify that:
(a)
The mains fuse is correctly selected and not blown
(b)
The switch is illuminated.
If the mains fuse is not blown but you are still unable to get any RF power, either
return the unit to E&I for repair or proceed to chapter 4.
3.2
Measurement of Gain
Equipment required:
(a) Two power meters; HP 434 or equivalent
(b) Sweep/Signal Generator
(c) 20 dB Coupler
(d) Attenuator, 20 dB
