Atec Agilent-E4438C User Manual
Page 7
7
Level accuracy with digital modulation turned on [relative to CW]
Conditions:
[with PRBS modulated data;
if using I/Q inputs,
√
I
2
+ Q
2
= 0.5 V
rms
, nominal]
1
Level accuracy with ALC on
π/4 DQPSK or QPSK formats
Conditions: With raised cosine or root-raised cosine filter and a
≥ 0.35;
with 10 kHz
≤ symbol rate ≤ 1 MHz; at RF freq ≥ 25 MHz;
power
≤ max specified –3 dB
Option 501-504
Option 506
±0.15 dB
±0.25 dB
Constant amplitude formats [FSK, GMSK, etc]
Option 501-504
Option 506
±0.1 dB
±0.15 dB
Level accuracy with ALC off
1, 2
(±0.15 dB) [relative to ALC on]
Conditions:
After power search is executed, with burst off.
Level switching speed
1
Option 501-504
With Option UNB
Option 506
Normal operation [ALC on]
(< 15 ms)
(< 21 ms)
(< 21 ms)
When using power search manual
(< 83 ms)
(< 95 ms)
(< 95 ms)
When using power search auto
(< 103 ms)
(< 119 ms)
(< 119 ms)
Specifications for Frequency and Power Characteristics
1. Parentheses denote typical performance.
2. When applying external I/Q signals with ALC off, output level will vary directly with I/Q input level.