Atec Agilent-E4438C - Manual (Page 9)

1. Repeatability and relative level accuracy are typical for all frequency ranges.
9
Linearity
CW or GSM, 1900 MHz, attenuator hold On, ALC On
-10 -8 -6 -4 -2 0 8 12
Amplitude (dBm)
ALC offset error (dB)
0.3
0.25
0.2
0.15
0.1
0.05
0
-0.05
-0.1
-0.15
-0.2
-0.25
-0.3
14 16 10 2 4 6
Typical STD unit
Typical Option 506 unit
Typical Option UNB unit
Lower limit
Upper limit
Linearity
W-CDMA 2200 MHz, attenuator hold On, ALC On
-10 -8 -6 -4 -2 0 2 4
Amplitude (dBm)
ALC offset error (dB)
0.3
0.25
0.2
0.15
0.1
0.05
0
-0.05
-0.1
-0.15
-0.2
-0.25
-0.3
6 8
Typical STD unit
Typical Option UNB unit
Typical Option 506 unit
Lower limit
Upper limit
Linearity
CW or GSM 5750 MHz, attenuator hold On, ALC On
-10 -8
Amplitude (dBm)
ALC offset error (dB)
0.3
0.25
0.2
0.15
0.1
0.05
0
-0.05
-0.1
-0.15
-0.2
-0.25
-0.3
-6 -4 -2 0 2 4 6 8 10
Typical STD unit
Lower STD deviation
Upper STD deviation
Lower limit
Upper limit
Linearity
W-CDMA 5750 MHz, attenuator hold On, ALC On
-10 -8 -6 -4 -2 0 2 4 6 8
Amplitude (dBm)
ALC Offset error (dB)
0.3
0.25
0.2
0.15
0.1
0.05
0
-0.05
-0.1
-0.15
-0.2
-0.25
-0.3
Mean,Option 506 unit
Lower STD deviation
Upper STD deviation
Lower limit
Upper limit
Linearity measures the accuracy of small changes while the attenuator
is held in a steady state (to avoid power glitches). This is useful for fine
resolution changes.
1
Specifications for Frequency and Power Characteristics
Linearity
CW or GSM, 850 MHz, attenuator hold On, ALC On
-10 -8 -6 -4 -2 0 8 12
Amplitude (dBm)
ALC offset error (dB)
0.3
0.25
0.2
0.15
0.1
0.05
0
-0.05
-0.1
-0.15
-0.2
-0.25
-0.3
-0.35
-0.4
14 10 2 4 6
Typical STD unit
Typical Option UNB unit
Typical Option 506 unit
Lower limit
Upper limit
16
Limit is undefined above 13 dBM
for STD units. Limit line applies
only to UNB and 506 units.