Atec Agilent-E4406A - Manual (Page 16)

16
Transmit power measurement
The transmit power measurement determines the average
power for an RF signal burst at or above a user specified
threshold value. The threshold value may be absolute, or
relative to the peak value of the signal.
Transmit power GMSK modulation (GSM)
Carrier power range at +30dBm(1W) to –60 dBm
Absolute power accuracy +30 to –40dBm at RF input
for in-band signal
(excluding mismatch error)
+18 to 30 °C ±0.6 dB (±0.4 dB, typical)
0 to +55 °C ±0.9 dB
Relative power accuracy ±0.25dB (±0.1dB, typical)
(same channel, different
transmit power, input
attenuator fixed), input
level change 0 to –76 dB
Resolution
Displayed 0.01dB
Remote query 0.001dB
Instrument repeatability ±0.05 dB (nominal)
Phase and frequency error measurement
Phase and frequency error measures the modulation
quality of a GSM transmitter. Phase and frequency error
can be displayed both numerically and or graphically. A
binary representation of the demodulated data bits is also
available.
Phase and Frequency GMSK modulation (GSM)
Error Specifications based on
3GPP essential conformance
requirements, and are based
on 200 bursts.
Carrier power range +27 to –45 dBm (nominal)
at RF Input
Phase error
Floor (RMS) <0.5°
Accuracy (RMS) ±0.5°
(phase error range 1° to 15°)
Peak phase error
Floor <1.5°
Accuracy ±2.0°
(phase error range 3° to 25°)
Frequency error
Accuracy ±5 Hz + (transmitter frequency
x frequency reference
accuracy)
I/Q offset
Range –15 to –50 dBc (nominal)
Burst sync time ±0.1 bit (approx. ±0.4 µs)
uncertainty
Burst sync
Source Training sequence, RF
amplitude, external rear, none.
Actual available choices
dependent on measurement.
Training sequence code GSM defined 0 to 7 auto
(search) or manual
Burst type Normal (TCH and CCH), Sync
(SCH), Access (RACH)
In-band frequency range
Down band GSM 400 to 500 MHz
GSM 900, P-GSM 890 to 915 MHz
935 to 960 MHz
GSM 900, E-GSM 880 to 915 MHz
925 to 960 MHz
DCS 1800 1710 to 1785 MHz
1805 to 1880 MHz
PCS1900 1850 to 1910 MHz
1930 to 1990 MHz
GSM 450 450.4 to 457.6 MHz
460.4 to 467.6 MHz
GSM480 478.8 to 486 MHz
488.8 to 496 MHz
GSM850 824 to 849 MHz
869 to 894 MHz