Agilent Technologies 8922S Manual do Utilizador descarregar pdf (Página 9)

Pulse On/Off Ratio Measurement Specifications

(Requires Option 006)

“On” power is averaged over the useful part of the burst.

“Off” is averaged over a one-bit interval centered at a user

specified time.

Non-hopped Mode Only

Input frequency setting range: ±10 kHz

Input level setting range: ±3 dB

Timing accuracy: ±1.7 µs (1.1 µs typical)

Accuracy (On/off ≥40 dB, RF in/out only)

Off power (dBm) On/off ratio accuracy

-30 to -1 2.4 dB 1.1 dB typically

-37 to -30 2.9 dB 1.3 dB typically

-41 to -37 3.7 dB 1.7 dB typically

-47 to -42 4.2 dB 2.1 dB typically

Amplitude Envelope Measurement

Specifications

After one timeslot, 577 µs from an isolated receiver hop

trigger in the GSM frequency bands.

Input frequency setting range: ±10 kHz

Inaccuracy due to noise (for overshoots 1 dB)

Input level setting error

Relative level ±1 dB ±3 dB ±3 dB with 5 averages

0 dB <±0.15 dB <±0.2 dB <±0.2 dB

peak peak peak

-6 dB <±0.2 dB <±0.3 dB <±0.3 dB

-30 dB <+3.0 dB <+4.2 dB <+2.2 dB

-3.8 dB -7.5 dB -2.6 dB

Phase and Frequency Measurement

Specifications

After one timeslot, 577 µs from an isolated hop trigger in

the GSM/DCS/PCS frequency bands.

Input frequency setting range: ±10 kHz

Input level setting range: ±3 dB

RMS phase error accuracy: ≤1° rms

RMS phase error measurement versus measured value

Peak phase error accuracy: ≤4° peak

Frequency error accuracy: ±(22 Hz + reference accuracy),

for normal bursts

Supplemental characteristics

Frequency error accuracy:

±(9 Hz + reference accuracy) for normal bursts

±(18 Hz + reference accuracy) for RACHs

Pulse On/Off Ratio, Amplitude Envelope, and Phase and Frequency

Measurement Specifications

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5

0.1

0.2

0.3

0.4

0.5

0.6

Measured Result (Deg rms)

Uncertainty (Deg rms)

Specified Typical

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

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