HP 8568B manual Start-Up Time Measurement Sweep Time, 20 s 200 s 32 s 48 s

3. Sweep Time Accuracy Test (220 ms)

‘Ihble 2-6.

Sweep Time Accuracy, Sweep Times 220 s

			Marker A Time
[ S W E E P	T I M E )
		Min		Measured	Max
20 s		3.6 s			4.4 s
200 s		32 s			48 s

Sweep Times 220 ms (Alternate Procedure)

Start-Up Time

Measurement

Sweep Time

Measurement

14.Sweep times 220 ms are tested without external test equipment by the following procedure.

15.Press ~NSTR PRESET).

16.Set @WEEP TIME] according to Table 2-7. Press MARKER (j-1. Rotate the DATA knob to place the marker on the left edge of the CRT display. Key in CSHIFT) [my.

17.Press [SHIFT) [REsy three times. The Active Function Block reads SWEEP GEN followed by a measured sweep time. This is the start-up time. Record it in ‘Ihble 2-7. The start-up time must be subtracted from the SWEEP GEN time measured in step 19. (Adding the start-up time to the [SWEEP TIME] setting effectively subtracts it from the SWEEP GEN time.)

18.Press MARKER (OFF).

19.Press @?i] (REST three times and note the SWEEP GEN reading. The limits for the SWEEP GEN reading are listed in Table 2-7. (For example, assume the start-up time measured in step 17 was 700 ,US for a [SWEEP TIME) of 20 ms. The limits for the SWEEP GEN readings would be 19.3 to 22.7 ms.)

20.Repeat steps 16 to 19 for each sweep time shown in Table 2-7.

lhble 2-7.

Sweep Time Accuracy, Sweep Times 220 ms

(Alternate Procedure)

S W E E P -rIME_)

20ms

50ms

100ms

500 ms

1s

10 s

50 s

100 s

150 s

Sweep Gen Readout

Min		Measured		Max
18.0 ms				22.0 ms
45.0 ms			55.0		ms
90.0	ms			110 ms
450 ms				550 ms
900 ms				1.10 ms
9.00 ms				11.0 ms
45.0	ms		55.0		ms
90.0	ms			10.0 ms
20.0 s			80.0		ms

2 - 1 2 P e r f o r m a n c e T e s t s