Agilent Technologies E8257C PSG Uživatelský manuál stáhnout pdf (Strana 5)

Ramp (analog) sweep (Option 007)

Operating modes

• Synthesized frequency sweep (start/stop), (center/span), (swept CW)

• Power (amplitude) sweep (start/stop)

• Manual sweep

◦ RPG control between start and stop frequencies

• Alternate sweep

◦ Alternates successive sweeps between current and stored states

Sweep span range Settable from minimum

to full range

Maximum sweep rate Start frequency Maximum sweep rate Max span for 100 ms sweep

250 kHz to < 0.5 GHz 25 MHz/ms 2.5 GHz

0.5 to < 1 GHz 50 MHz/ms 5 GHz

1 to < 2 GHz 100 MHz/ms 10 GHz

2 to < 3.2 GHz 200 MHz/ms 20 GHz

≥ 3.2 GHz 400 MHz/ms 40 GHz

Frequency accuracy

± 0.05% of span ± timebase (at 100 ms sweep time, for sweep spans less than maximum values given above) .

Accuracy improves proportionally as sweep time increases

Sweep time (forward sweep, not including bandswitch and retrace intervals)

Manual mode Settable 10 ms to 200 seconds

Resolution 1 ms

Auto mode Set to minimum value determined by maximum sweep rate and 8757D setting

Triggering Auto, external, single, or GPIB

Markers 10 independent continuously variable frequency markers

Display Z-axis intensity or RF amplitude pulse

Functions M1 to center, M1/M2 to start/stop, marker delta

Two-tone (master/slave)

measurements

Two PSGs can synchronously track each other, with independent control of start/stop frequencies

Network analyzer compatibility

Compatible with Agilent 8757D scalar network analyzer. Also useable with Agilent 8757A/C/E scalar

network analyzers for making basic swept measurements.

1. During ramp sweep operation, AM, FM, phase modulation, and pulse modulation are useable but performance is not guaranteed.

2. Minimum settable sweep span is proportional to carrier frequency and sweep time. Actual sweep span may be slightly different than desired setting for spans less

than [0.00004% of carrier frequency or 140 Hz] x [sweep time in seconds]. Actual span will always be displayed correctly.

3. Typical accuracy for sweep times > 100 ms can be calculated from the equation: [(0.005% of span)/(sweep time in seconds)] ± timebase. Accuracy is not speciﬁed

for sweep times < 100 ms.

4. For master/slave operation use Agilent part number 8120-8806 master/slave interface cable.

5. GPIB system interface is not supported with 8757A/C/E, only with 8757D. As a result, some features of 8757A/C/E, such as frequency display, pass-through

mode, and alternate sweep, do not function with PSG signal generators.

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