HP 8559A 250 MHz CAL OUTPUT, Adjust VERTICAL POSN to align the CRT trace with the bottom graticule line, 3-31.Frequency and Amplitude Adjustments

OPERATION

3-31. Frequency and Amplitude AdjustmentsAdjust VERTICAL POSN to align the CRT trace with the bottom graticule line.

Center the LO feedthrough (i.e., the "signal" at 0 MHz) on the CRT with the TUNING control.

Narrow the FREQ SPAN/DIV to 200 kHz. Adjust the REF LEVEL FINE control as necessary to position the signal peak near the top CRT graticule line.

Center the LO feedthrough again, if necessary, and adjust the FREQ ZERO to calibrate the FREQUENCY MHz readout at 00.0 MHz.

Set the FREQ SPAN/DIV control to 1 MHz and the REF LEVEL FINE control to 0. Adjust the TUNING control for a FREQUENCY MHz readout of approximately 250 MHz.

Press the 10 dB/DIV Amplitude Scale push button, and set the REFERENCE LEVEL control to - 20 dBm (+ 30 dBmV for Option 002 instruments).

MODEL 8559A

Connect the 250 MHz CAL OUTPUT to the spectrum analyzer input, and center the signal on the CRT with the TUNING control. The FREQUENCY MHz readout will indicate 250 MHz -t3 MHz.

Press the LIN Amplitude Scale push button. Adjust the REF LEVEL FINE control to place the signal peak at the top CRT graticule line.

Press the 10 dB/DIV Amplitude Scale push button. Adjust VERTICAL GAIN to place the signal peak at the top CRT graticule line.

Repeat steps 8 and 9 until the signal peak remains at the top CRT graticule line when the Amplitude Scale is alternated between 10 dB/ DIV and LIN.

Set the REF LEVEL FINE control to 0, and the REFERENCE LEVEL control to - 30 dBm ( +20 dBmV for Option 002 instruments).

Press the LIN Amplitude Scale push button, and adjust REF LEVEL CAL to place the signal peak at the top CRT graticule line.