8648C AGILENT TECHNOLOGIES, 8648C Datasheet - Page 10

• Manufacturer Part Number: 8648C
• Description: SIGNAL GENERATOR FREQUENCY/PULSE, 3.2GHZ
• Manufacturer: AGILENT TECHNOLOGIES

Specifications of 8648C

• Signal Generator Type: Signal
• Bandwidth: 3.2GHz
• Modulation Type: AM, FM, Phase
• Supply Voltage Range: 90V To 264V
• External Height: 165mm
• External Width: 330mm
• External Depth: 368mm
• Lead Free Status / RoHS Status: na

10
Level accuracy with digital modulation
(ESG-DP and ESG-D series only)
With ALC On; relative to CW; with PRBS modulated data;
if using I/Q inputs,
(Relative to CW; with raised cosine or root-raised cosine filter and
power max specified –3 dB or –6 dB with Option UNB)
Constant amplitude formats (FSK, GMSK, etc)
Level accuracy with ALC off
(After power search is executed; relative to CW level accuracy with
ALC on; with burst off; if external I/Q is enabled I
I/Q modulation
(ESG-DP and ESG-D series only)
I/Q inputs
Input impedance
Full scale input
1. The optimum I/Q input level is
2. When applying external I/Q signals with ALC off, output level will vary directly with I/Q input level. Power search is an internal calibration routine used to set output
3. Coherent carrier is modulated by FM or M when enabled.
Specifications for digital models only
/4 DQPSK or QPSK formats
ESG-D series
±0.20 dB
±0.30 dB
ESG-D series
±0.20 dB
will be maintained with drive levels between 0.25 and 1.0 V
power when ALC is off. The routine disables all modulation inputs, adjusts output power while applying 0.5 V
0.35; with 10 kHz symbol rate 1 MHz; at RF freq 25 MHz;
1
Typical I/Q frequency response
I
2
+ Q
2
= 0.5 V
2
I 2 +Q 2 = 0.5 V
I
50
ESG-DP series
±0.20 dB
±0.30 dB
ESG-DP series
±0.20 dB
2
±0.3 dB, typical
+ Q
rms
2
= 0.5 V
, nominal)
rms
, I/Q drive level affects EVM, origin offset, spectral regrowth, and noise floor. Typically, level accuracy with ALC on
rms
rms
2
1
+ Q
.
> 3 GHz
3 GHz
2
= 0.5 V
rms
)
Adjustments/Impairments (nominal)
DC offset (I and Q independently adjustable) ±100%
I/Q gain ratio
I/Q quadrature
External burst envelope
(ESG-DP and ESG-D series only)
Input voltage
RF On
RF Off
Linear control range
On/off ratio
> 3 GHz
V
Rise/fall time
Minimum burst repetition frequency
ALC on
ALC off
External input
Input impedance
Coherent carrier out
(ESG-DP and ESG-D series only)
Range
Level
Impedance
in
3 GHz
rms
to the I/Q modulathen enables modulation.
3
0 V
–1.0 V
0 to –1 V
> 75 dB
> 60 dB
< 2 µs with rectangular input, typical
10 Hz, typical
dc
Ext 1
50 , nominal
250 MHz to maximum carrier
0 dBm ±5 dB, typical
50
±4 dB
±10° (for fc 3.3 GHz)
–1.05 V
frequency