HP 8360 manual Internal Pulse Generator

Internal Pulse Generator

Width Range: 1 ps to 65 ms

Period Range: 2 ps to 65 ms

Resolution: 1 ps

AM and Scan Bandwidth (3 dB, 30% depth, modulation peaks 3 dB below maximum rated power):

DC to 100 kHz (typically DC to 300 kHz)

Modulation Depth

(ALC levels noted, can be offset using step attenuator)

Normal Mode: -20 dBm to 1 dB below maximum available power Deep ModeI39 15. 50 dB below maximum available power Unleveled Mode14r 15: 50 dB below maximum available power

Sensitivity

Linear: lOO%/volt

Accuracy (1 kHz rate, 30% depth, normal mode): 5%

Exponential: 10 dB/volt

Accuracy (Normal Mode): 0.25 dB f5% of depth in dB

Incidental Phase Modulation (30% depth): 0.2 radians peak, typical

Incidental FM: Incidental phase modulation x modulation rate

G-

5

4 I

3

Typical AM Distortion

(ALC level OdBm, Carriers r20GHz)

N’xrnDi Mode -

Deep Mode - - - -

1 OOkHz Rate

?2

c

1

0

0

		/
			1kHz	R a t e
I	I		I	I		I
I						I
	20	40		60	80	100

A M D e p t h (%)

I3 Deep mode offers reduced distortion for very deep AM. Waveform is DC-coupled and feedback-leveled at ALC levels above -13 dBm. At ALC levels below -13 dBm, output is DC-controllable, but subject to typical sample-and-hold drift of 0.25 dB/second.

I4 The HP 8360 has two unleveled modes, ALC off and search. In ALC off mode, the modulator drive can be controlled from the front panel to vary quiescent RF output level. In search mode, the instrument microprocessor momentarily closes the ALC loop to find the modulator drive setting necessary to make the quiescent RF output level equal to an entered value, then opens the ALC loop while maintaining that modulator drive setting. Neither of these modes is feedback leveled.

l5 Modulation depth is 40 dB below maximum available power for frequencies > 20 GHz on HP 83640A and HP 83650A.

Specifications 2c-11