Agilent Technologies 33120A manual Modulation Characteristics

Chapter 1 Specifications

Agilent 33120A Function Generator

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MODULATION CHARACTERISTICS

AM Modulation
Carrier -3 dB Freq:	10 MHz (typical)
Modulation:	Any internal waveform plus Arb
Frequency:	10 mHz to 20 kHz (￿￿￿0.05% to
	2.5 kHz, then decreases linearly
	to ￿￿0.4% at upper limit)
Depth:	0% to 120%
Source:	Internal / External
FM Modulation
Modulation:	Any internal waveform plus Arb
Frequency:	10 mHz to 10 kHz (￿￿￿0.05% to
	600 Hz, then decreases linearly
	to ￿￿0.8% at upper limit)
Peak Deviation:	10 mHz to 15 MHz
Source:	Internal Only
Burst Modulation	5 MHz max.
Carrier Frequency:
Count:	1 to 50,000 cycles, or Infinite
Start Phase:	-360￿to +360￿
Internal Rate:	10 mHz to 50 kHz ￿￿1%
Gate Source:	Internal or External Gate (1)
Trigger Source:	Single, External, or Internal Rate
FSK Modulation	10 mHz to 15 MHz (￿￿￿0.05% to
Frequency Range:
	600 Hz, then decreases linearly
	to ￿￿4% at upper limit)
Internal Rate:	10 mHz to 50 kHz
Source:	Internal / External (1 MHz max.)
FREQUENCY SWEEP
Type:	Linear or Logarithmic
Direction:	Up or Down
Start F / Stop F:	10 mHz to 15 MHz
Time:	1 ms to 500 sec ￿￿0.1%
Source:	Single, External, or Internal
REAR-PANEL INPUTS
External AM	￿5 Vpk = 100% Modulation
Modulation:	5 k￿Input Resistance
External Trigger/FSK
Burst Gate: (1)	TTL (low true)
Latency:	1.3 ￿s
Jitter:	25 ns

SYSTEM CHARACTERISTICS

	Configuration Times (2)
	Function Change: (3)			80 ms
	Frequency Change: (3)			30 ms
	Amplitude Change:			30 ms
	Offset Change:			10 ms
	Select User Arb:			100 ms
	Modulation Parameter Change:			< 350 ms
Arb Download Times over GPIB:
	Arb Length	Binary	ASCII Integer		ASCII Real (4)
	16,000 points	8 sec	81 sec		100 sec
	8,192 points	4 sec	42 sec		51 sec
	4,096 points	2.5 sec	21 sec		26 sec
	2,048 points	1.5 sec	11 sec		13 sec

Arb Download Times over RS-232 at 9600 Baud: (5)

Arb Length	Binary	ASCII Integer	ASCII Real (6)
16,000 points	35 sec	101 sec	134 sec
8,192 points	18 sec	52 sec	69 sec
4,096 points	10 sec	27 sec	35 sec
2,048 points	6 sec	14 sec	18 sec

(1)Trigger source ignored when External Gate is selected.

(2)Time to change parameter and output the new signal.

(3)Modulation or sweep off.

(4)Times for 5-digit and 12-digit numbers.

(5)For 4800 baud, multiply the download times by two;

For 2400 baud, multiply the download times by four, etc.

(6)Time for 5-digit numbers. For 12-digit numbers, multiply the 5-digit numbers by two.

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