Operation Using Load Terminals; Operation Using Attenuator Output; Frequency Modulation - BRUEL & KJAER 1022 Instructions And Applications

B. OPERATION USING LOAD TERMINALS
1. Set up and calibrate the Oscillator as above in A.
2. Select suitable matching impedance for the load using MATCHING IMPE-
DANCE switch.
3. Connect load to LOAD terminals.
4. Turn pointer on main frequency dial to desired frequency, finely adjust-
ing with FREQUENCY INCREMENT knob if necessary.
5. Select required output voltage using OUTPUT LEVEL knob.
C. OPERATION USING ATTENUATOR OUTPUT
1. Set up and calibrate the Oscillator as above in A.
2. Set MATCHING IMPEDANCE switch to "Att".
3. Select appropriate voltage range with ATTENUATOR knob.
4. Connect load to ATTENUATOR OUTPUT ..
5. Turn pointer on main frequency dial to desired frequency, finely adjust-
ing with FREQUENCY INCREMENT knob if necessary.
6. Select required output voltage using OUTPUT LEVEL knob.
Note: The meter reading is correct only when the impedance of the load
is high compared to the
son
attenuator impedance.
D. FREQUENCY MODULATION
When a frequency modulated output signal is required:
1. Set knobs:
MODULATION FREQUENCY
FREQUENCY DEVIATION
required value
zero
2. Calibrate the Oscillator from point A. 3. above.
3. Set FREQUENCY DEVIATION knob to required bandwidth.
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