HP 8568B L-1, @KKK, 0 Hz, Press, SINGLE, 10 kHz, 300 Hz, @?G?iG], and set, RECALL), 16.5 MHz, then a key, -50dBm, and CATTEN]0 dB, Set LINE switch to ON and key in

14.249 MHz Phase Lock Oscillator Adjustments

15.Set LINE switch to STANDBY. Adjust A7L2 one-half turn counterclockwise before placing A7 249 MHz PLO in HP 8568B Spectrum Analyzer without extender. (Leave DVM connected to A7TPl).

16.Set LINE switch to ON and key in @KKK) 1. DVM indication should be between +5.2 V dc and +6.0 V de.

17.Press 2 (RECALL 2). DVM indication should be between + 12.9 V dc and + 16.9 V dc. Disconnect DVM from A7TPl.

18.Set LINE switch to STANDBY and place A7 249 MHz PLO on extender.19.Set LINE switch to ON, press ~NSTR PRESET), and set the analyzer as follows:

			16.5 MHz
[	C E N T E R F R E Q U E N C Y ) . . . . . . . . . . . . . . . . . . . . . . . .
			. . . 0 Hz
	FREQUENCY SPAN	)
L-1 ..................................................................			SINGLE

20.Disconnect cable from A7Jl and connect cable 89 (gray/white) to one branch of a tee. Using a short coaxial cable (see Note below), connect the other branch of the tee back to A7Jl. Connect the stem of the tee to the HP 8566A/B Spectrum Analyzer RF INPUT.

Note The short cable 9 (white) in the IF-Display Section (A3A9J2 to A3A2Jl) can be disconnected and used for this adjustment. Be sure to reconnect the cable 9 (white) when finished.

21.Press @?G?iG] on the HP 8566A/B Spectrum Analyzer and key in (FREQUENCY SPAN) 5 MHz, [CENTER FREQUENCY) 1547 MHz, SPEAK SEARCH) and t-1.

22.On the HP 8566A/B Spectrum Analyzer, key in [SIGNAL TRACK),

[FREQUENCY SPAN) 10 kHz, cm) 300 Hz, [REFERENCE LEVEL)

-50 dBm, and CATTEN] 0 dB.

23.On the HP 8566A/B Spectrum Analyzer, turn off [SIGNAL TRACK_] and set [CF STEP SIZE) to 500 kHz on the HP 8566A/B Spectrum Analyzer. Press [CENTER FREQUENCY), then a key.

24.Disconnect cable from the HP 8566A/B Spectrum Analyzer RF INPUT and connect cable (from tee) to PRE AMP input of HP 8447F Amplifier. Connect cable from PRE AMP output to the HP 8566A/B Spectrum Analyzer RF INPUT.

25.Adjust A7 500 kHz TRAP adjustments A7L15 and A7L17 to null the 500 kHz sideband displayed on the spectrum analyzer. The 500 kHz sideband should be less than -90 dBm. See Figure 3-60 for location of adjustments.

26.Press (SAVE_) 1 on HP 8568B Spectrum Analyzer. Set LINE switch to STANDBY and place A7 249 MHz PLO in HP 8568B Spectrum Analyzer without extender (leave tee connected).

27.Set LINE switch to ON and press CRECALL) 1. Verify that 500 kHz remains less than -90 dBm in amplitude.

28.Disconnect tee and reconnect cable 89 (gray/white) to A7J 1.

Adjustments 3-l 09