8648B AGILENT TECHNOLOGIES, 8648B Datasheet - Page 17

• Manufacturer Part Number: 8648B
• Description: SIGNAL GENERATOR FREQUENCY / PULSE, 2GHZ
• Manufacturer: AGILENT TECHNOLOGIES

Specifications of 8648B

• Signal Generator Type: Signal
• Bandwidth: 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

1. Parentheses denote typical performance.
2. Specifications apply with high crest factor off.
Multichannel CDMA spurious emissions
(dBc, with high crest factor on)
Channels/offsets
Reverse (at 0 dBm)
30 – 699 MHz
700 – 1000 MHz
1000 – 2000 MHz
9/64 channels (at –2 dBm)
30 – 699 MHz
700 – 1000 MHz
1000 – 2000 MHz
Multichannel, multicarrier
CDMA personality
(Option UN5, ESG-DP and ESG-D series only)
Chip (symbol) rate
Modulation
QPSK (forward)
Offset QPSK (reverse)
Pre-defined channel configurations
(power levels per IS-97-A)
Pilot channel
9 channel
32 channel
64 channel
Reverse channel
Rho
( 4 dBm, IS-95 filter, 2 GHz, typical)
Pilot time offset
User-defined CDMA
Channel table editor
Number of channels 1 to 256
Walsh codes
Channel power
PN Offset
Data
1.2288 MHz (default)
Adjustable from 1 Hz to
10 MHz with 4x oversampling
with Walsh and short code spreading
with short code spreading of
random data
Includes IS-95 modified filter, with equalizer
Includes pilot, paging, sync, 6 traffic and
IS-95 modified filter, with equalizer
Includes pilot, paging, sync, 29 traffic and
IS-95 modified filter, with equalizer
Includes pilot, 7 paging, sync, 55 traffic and
IS-95 modified filter, with equalizer
Includes IS-95 filter
0.9996
0 to 63
0 to –40 dB
0 to 511
00-FF(HEX) or random
2 µs, typical
Standard Option UNB Option H99 Standard Option UNB Option H99 Standard Option UNB Option H99
–66 (–72) –70 (–75)
–68 (–73) –72 (–76)
–63 (–66) –70 (–74)
–65 (–68) –68 (–71)
–64 (–70) –69 (–73)
–60 (–63) –67 (–71)
0.885 to 1.25 MHz
–70
–73 (–75)
–72 (–73)
–78 (–79)
–78 (–79)
–71 (–75)
(Rev B)
1
(–76)
(–76)
(–70)
(–73)
(–75)
(–68)
Walsh code power selection
IS-95 filter selection
All are IS-95 compliant. “Modified” filters reduce spurious
emissions for adjacent channel power measurements.
Other FIR filters
Nyquist, root Nyquist
Gaussian
Custom FIR
Oversample ratio
Range
Resolution
Multicarrier
Number of carriers
Carrier channels
Frequency offset
Offset resolution
Carrier power
Clipping
1.25 to 1.98 MHz
(per carrier)
(per carrier)
Clip location
Clipping type
Clipping range
(–78)
(–79)
(–78)
(–76)
(–77)
(–75)
(Rev B)
(–77)
(–81)
(–81)
(–72)
(–78)
(–77)
IS-97 compliant
Equal channel power
Scaled to 0 dB
User-defined
IS-95
IS-95 with equalizer
IS-95 modified
IS-95 modified with equalizer
B
Up to 256 coefficients
16-bit resolution
Automatically scaled
2 to 8
1
3 or 4 (predefined),
up to 12 (user-defined)
Pilot, 9 channel, 32 channel,
64 channel, reverse, custom
±7.5 MHz
< 100 Hz
0 dB to –40 dB
Pre or post FIR filter
|I+jQ|, |I| and |Q|
10% to 100%
(clip the modulation level to a
percentage of full scale. A level
of 100% equates to no clipping)
b
= 0 to 1
T = 0.1 to 1
(–79)
(–79)
(–79)
(–78)
(–79)
(–78)
1.98 to 5 MHz
(–79)
(–79)
(–79)
(–78)
(–79)
(–78)
(Rev B)
2
(–79)
(–80)
(–80)
(–80)
(–80)
(–80)
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