Agilent Technologies E8247C PSG CW Manual de usuario descargar pdf (Pagina 10)

19 For f

< 2 MHz AM is usable but not specified. AM specifications apply with ALC on, and envelope peaks

< maximum specified power. For instruments without Option 1E1 attenuator, specs apply for carrier

amplitude > –2 dBm.

20 For AM depth settings > 90% or > 20 dB, deep AM mode or 1 kHz ALC BW is recommended.

21 Internal2 is not available when using swept sine or dual sine modes.

Depth Linear mode Exponential (log) mode

(Downward modulation only)

Maximum > 90% > 20 dB

Settable

0 - 100 % 0 to 40 dB

Resolution 0.1% 0.01 dB

Accuracy < ±(6 % of setting + 1 %) < ±(2% of setting + 0.2 dB)

(1 kHz rate)

Ext sensitivity ±1 V

peak

for –1 V for indicated depth

indicated depth

Rates (3 dB bandwidth, 30% depth) dc/10 Hz to 100 kHz typical (useable to 1 MHz)

Distortion (1 kHz rate, linear mode, THD)

30% AM < 1.5%

90% AM < 4 %

Paths AM1 and AM2 are summed internally for composite

modulation. Either path may be switched to any one of

the modulation sources: Ext1, Ext2, internal1, internal2.

Modulation types AM, FM, and FM

Input impedance 50 or 600 ohm, nominal, switched

High/low indicator

(100 Hz to 10 MHz BW, ac coupled inputs only)

Activated when input level error exceeds

3%, nominal

All modulation types may be simultaneously enabled except: FM with FM, and linear AM with

exponential AM. AM, FM, and FM can sum simultaneous inputs from any two sources (Ext1, Ext2,

internal1, or internal2) Any given source (Ext1, Ext2, internal1, or internal2) may be routed

to only one activated modulation type.

Dual function generators provides two independent signals (internal1 and internal2) for use with

AM, FM, FM, or LF Out.

Waveforms Sine, square, positive ramp, negative ramp, triangle,

Gaussian noise, uniform noise, swept sine, dual sine

Rate range

Sine 0.5 Hz to 1 MHz

Square, ramp, triangle 0.5 Hz to 100 kHz

Resolution 0.5 Hz

Accuracy Same as timebase

LF out

Output Internal1 or internal2. Also provides monitoring of

internal1 or internal2 when used for AM, FM, or FM.

Amplitude 0 to 3 V

peak

, nominal into 50 ohm

Output impedance 50 W, nominal

Swept sine mode:

(frequency, phase continuous)

Operating modes Triggered or continuous sweeps

Frequency range 1 Hz to 1 MHz

Sweep rate 0.5 Hz to 100 kHz sweeps/s, equivalent to sweep

times 10 us to 2 s

Resolution 0.5 Hz (0.5 sweep/s)

Amplitude modulation

> 2 MHz)

(typical)

External modulation inputs

(Ext1 & Ext2)

Simultaneous modulation

Internal modulation source

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 16

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Agilent Technologies E8247C PSG CW Manual de usuario Pagina 10

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