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HP 8647A and 8648A/B/C/D
Signal Generators
Technical Specifications
HP 8647A, 250 kHz to 1 GHz
HP 8648A, 100 kHz to 1 GHz
HP 8648B, 9 kHz to 2 GHz
HP 8648C, 9 kHz to 3.2 GHz
HP 8648D, 9 kHz to 4 GHz
FREQUENCY
FREQUENCY
FUNCTION
MODULATION
DATA
AMPLITUDE
AMPLITUDE
POWER
HP-IB MEMORY MODULATION SOURCE
MOD
IN/OUT
RF OUTPUT
Specifications describe warranted instrument performance over the
0 to 50˚C temperature range and after a 30-minute warm-up, unless otherwise noted. All performance below a carrier frequency of 250 kHz is typical. Supplemental characteristics are intended to provide information useful in estimating instrument capability in your application by describing typical, but non-warranted performance.
Frequency
Range
HP 8647A: 250 kHz to 1000 MHz.
HP 8648A: 100 kHz to 1000 MHz.
HP 8648B: 9 kHz to 2000 MHz.
HP 8648C: 9 kHz to 3200 MHz.
HP 8648D: 9 kHz to 4000 MHz.
Resolution
Settable
HP 8647A: 1Hz.
HP 8648A/B/C/D: 0.001 Hz.
Display
10 Hz.
Accuracy 1
Typically ±3x10 –6 x carrier frequency (Hz),
±0.15x10
–6 x carrier frequency (Hz) for Option 1E5.
Switching speed (typical)
HP 8647A
<120 ms.
HP 8648A/B/C/D
<1001 MHz: <75 ms.
≥ 1001 MHz: <100 ms.
1 After one hour warm-up and within one year of calibration.
2
Internal Reference Oscillator
Accuracy and stability 2
(typical, calibration adjustment dependent)
± Aging rate ± temperature effects ± line voltage effects.
Aging
Accepts 2, 5, 10 MHz ±10 ppm typical (±1 ppm typical with option 1E5) and a level range of 0.5 V
Harmonics
<–30 dBc (output
≤
+4 dBm).
Subharmonics (output
≤
+4 dBm)
<1001 MHz: <–60 dBc.
≤
3200 MHz: <–50 dBc.
≤
4000 MHz: <–40 dBc.
Nonharmonics (
≥
5 kHz offset, output
≤
+4 dBm)
HP 8647A
<–60 dBc 6 .
HP 8648A/B/C/D
<249 MHz: <–55 dBc.
<1001 MHz: <–60 dBc.
<2001 MHz: <–54 dBc.
≤
4000 MHz: <–48 dBc.
HP 8647A
Standard
Timebase
(typical)
<±2 ppm/year
Temperature <±1 ppm
Line Voltage 5 <±0.5 ppm
Output
10 MHz, typically >0.5 Vrms level into 50
External reference oscillator input to 2 Vrms into 50
Ω
.
Spectral Purity
Residual FM (CCITT, rms)
High Stability
Timebase
(Opt 1E5)
<±0.1 ppm/year 3
<±0.0005 ppm/day 3
<±0.01 ppm 4 (typical)
<±0.1 ppm (typical)
<249 MHz: <20 Hz, typically <11 Hz.
<501 MHz: <10 Hz, typically <6 Hz.
≤
1000 MHz: <20 Hz, typically <11 Hz.
HP 8648A/B/C/D
<249 MHz: <7 Hz, typically <4 Hz.
<501 MHz: <4 Hz, typically <2 Hz.
<1001 MHz: <7 Hz, typically <4 Hz.
<2001 MHz: <14 Hz, typically <8 Hz.
≤
4000 MHz: <28 Hz, typically <12 Hz.
Ω
.
SSB phase noise (at 20 kHz offset, typical)
HP 8647A at fc 500 MHz: <–110 dBc/Hz.
at fc 1000 MHz: <–106 dBc/Hz.
HP 8648A/B/C/D at fc 500 MHz: <–120 dBc/Hz.
at fc 1000 MHz: <–116 dBc/Hz.
at fc 2000 MHz: <–110 dBc/Hz.
at fc 3000 MHz: <–106 dBc/Hz.
at fc 4000 MHz: <–104 dBc/Hz.
Typical Phase Noise of HP 8647A and 8748A/B/C/D at 500 MHz
–50
–60
–70
–80
–90
–100
–110
–120
–130
–140
–150
1 10
HP 8647A at 500 MHz
HP 8648A/B/C/D at 500 MHz
100 1K 10K 100K 1M
(f) dBc/Hz versus Offset from Carrier Frequency (Hz)
Output
Range
HP 8647A and 8648A
+10 to –136 dBm.
HP 8648B/C/D
≤ 2500 MHz: +13 to –136 dBm.
≤
4000 MHz: +10 to –136 dBm.
10M
Maximum Leveled Power (High power option 1EA)
HP8648B/C/D only 7
≤ 100 kHz: +17 dBm.
≤
1000 MHz: +20 dBm.
≤ 1500 MHz: +19 dBm.
≤
2100 MHz: +17 dBm.
≤ 2500 MHz: +15 dBm.
≤
4000 MHz: +13 dBm.
Option 1EA—Typical Power versus Frequency (GHz)
3
Display Resolution
0.1 dB.
Accuracy
HP 8647A 8
±1.5 dB.
HP 8648A/B/C/D 8,9,10
≤ 2500 MHz: ±1.0 dB.
≤
3200 MHz: ±1.5 dB.
≤ 4000 MHz: ±2.0 dB.
Reverse power protection (watts into 50
Ω
)
≤ 2000 MHz: 50 watts.
≤
4000 MHz: 25 watts.
SWR (output <–6 dBm, typical)
HP 8647A
<2.0:1.
HP 8648A/B/C/D
<249 kHz: <2.5:1.
<2500 MHz: <1.5:1.
≤
4000 MHz: <2.0:1.
Output impedance
Nominally 50 ohms.
Amplitude Modulation (fc>1.5 MHz)
11
Range
0 to 100% (output
≤
+4 dBm).
Resolution
0.1%.
Accuracy 12 (1 kHz rate).
±5% of setting ±1.5%.
Rates
HP 8647A
Internal: 400 Hz or 1 kHz.
External: 20 Hz to 25 kHz (typical, 3 dB BW).
HP 8648A/B/C/D
Internal: 400 Hz or 1 kHz or 10 Hz to 20 kHz with Opt 1E2.
External: DC: dc to 25 kHz (typical, 3 dB BW).
AC: 1 Hz to 25 kHz (typical, 3 dB BW).
Distortion (1 kHz rate, THD+N, 0.3 to 3 kHz BW)
(at 30 % AM): <2%.
HP 8647A and 8648A (at 90% AM): <3%.
HP 8648B/C/D (at 70% AM): <3%.
Frequency Modulation
Peak deviation (rates >25 Hz ac FM)
HP 8647A
<249 MHz: 0 to 100 kHz.
<501 MHz: 0 to 50 kHz.
≤
1000 MHz: 0 to 100 kHz.
HP 8648A/B/C/D
<249 MHz: 0 to 200 kHz.
<501 MHz: 0 to 100 kHz.
<1001 MHz: 0 to 200 kHz.
<2001 MHz: 0 to 400 kHz.
≤ 4000 MHz: 0 to 800 kHz.
Resolution
For ≤ 10% peak deviation
<2001 MHz: 10 Hz.
≥ 2001 MHz: 20 Hz.
For >10% to maximum peak deviation
<2001 MHz: 100 Hz.
≥ 2001 MHz: 200 Hz.
Deviation accuracy (internal 1 kHz rate)
HP 8647A
±7.5% of FM deviation ±30 Hz.
HP 8648A/B/C/D
<1001 MHz: ±3% of FM deviation ±30 Hz.
<2001 MHz: ±3% of FM deviation ±60 Hz.
≤ 4000 MHz: ±3% of FM deviation ±120 Hz.
Rates
HP 8647A
Internal: 400 Hz or 1 kHz.
External: DC: dc to 75 kHz (typical, 3 dB BW).
AC: 20 Hz to 75 kHz (typical, 3 dB BW).
HP 8648A/B/C/D
Internal: 400 Hz or 1 kHz or 10 Hz to 20 kHz with Opt 1E2.
External: DC: dc to 150 kHz (typical, 3 dB BW).
AC: 1 Hz to 150 kHz (typical, 3 dB BW).
2 After one hour warm-up and within one year of calibration.
3 After four days warm-up and within one year of calibration.
4 Applies over the 25 ±5˚ C range.
5 Applies for line voltage change of ±5%.
6 Non-harmonic spurious are –55 dBc from 220 to 250 MHz.
7 Combining option 1E6 with 1EA reduces maximum output power by 2 dB above 100 MHz. Below 100 MHz, maximum output is +13 dBm (typically +16 dBm for carrier frequencies between 100 kHz and 100 MHz).
8 Accuracy is valid from maximum specified output power to –127 dBm.
Below –127 dBm, accuracy is typically ±3 dB in the range 100 kHz to
2500 MHz, and is not specified outside this frequency range.
9 Accuracy applies at 25 ±5˚C; and typically degrades up to ±0.5 dB over 0 to 50˚C or at output power levels >13 dBm.
10 Accuracy is ±3 dB for power levels between –100 dBm and –127 dBm for frequencies below 100 kHz or above 2500 MHz.
11 AM is typical above 1001 MHz.
12 AM accuracy applies at 25 ±5˚C and at <70% depth: it is typically
±7% of setting ±1.5% over 0 to 50˚C.
4
Distortion (1 kHz rate, THD + N, 0.3 to 3 kHz BW)
<1001 MHz: <1% at deviations >4 kHz.
<2001 MHz: <1% at deviations >8 kHz.
≤ 4000 MHz: <1% at deviations >16 kHz.
(88 to 108 MHz: <0.5% at deviations
≥
75 kHz 13 ).
Carrier frequency accuracy (relative to CW in dcFM) 14
HP 8647A
±500 (typical 200) Hz, deviations <10 kHz.
HP 8648 A/B/C/D
<1001 MHz: ±100 (typical 40) Hz, deviations <10 kHz.
<2001 MHz: ±200 (typical 80) Hz, deviations <20 kHz.
≤
4000 MHz: ±400 (typical 160) Hz, deviations <40 kHz.
FM + FM
Internal 1 kHz or 400 Hz source plus external. In internal plus external FM mode, the internal source produces the set level of deviation. The external input should be set to ≤ ±0.5V peak or 0.5 Vdc (one-half the set deviation).
Phase Modulation
Peak deviation
<249 MHz: 0 to 10 radians.
<501 MHz: 0 to 5 radians.
<1001 MHz: 0 to 10 radians.
<2001 MHz: 0 to 20 radians.
≤
4000 MHz: 0 to 40 radians.
Resolution
<2001 MHz: 0.01 radians.
≥ 2001 MHz: 0.02 radians.
Deviation accuracy (internal 1 kHz rate, typical)
HP 8647A
±7.5% of deviation ±0.05 radians.
HP 8648A/B/C/D
<1001 MHz: ±3% of deviation ±0.05 radians.
<2001 MHz: ±3% of deviation ±0.1 radians.
≤ 4000 MHz: ±3% of deviation ±0.2 radians.
Rates:
Internal
400 Hz or 1 kHz or 10 Hz to 20 kHz with Opt 1E2 15 .
External
20 Hz to 10 kHz (typical, 3 dB BW).
Distortion (1 kHz rate)
HP 8647A
<2% at deviations
≥
3 radians.
HP 8648 A/B/C/D
<1001 MHz: <1% at deviations ≥ 3 radians.
<2001 MHz: <1% at deviations
≥
6 radians.
≤ 4000 MHz: <1% at deviations ≥ 12 radians.
Modulation Source
Internal
400 Hz or 1 kHz, front panel BNC connector provided at nominally 1 Vpk into 600
Ω
.
External
1 Vpk into 600
Ω
(nominal) required for full scale modulation. (High/Low indicator provided for external signals
≤
10 kHz.)
Modulation Generator (Option 1E2)
15
Adds variable frequency modulation source. Functions also included in Option 1EP Pager encoder/signalling option.
Waveforms
Sine, Square, Triangle, Sawtooth (Ramp).
Frequency range
Sine: 10 Hz to 20 kHz.
Square, Triangle, Sawtooth: 100 Hz to 2 kHz.
16
Frequency accuracy
±0.01% typical.
Frequency resolution:
1 Hz (3 digits or 10 Hz displayed).
Depth & Deviation Accuracy (1 kHz sine)
Refer to AM, FM, and Phase Modulation Accuracy specs.
Output
Front panel BNC. Nominally 1 Vpk
Pulse Modulation (Option 1E6)
(HP 8648B/C/D only)
Adds high performance pulse modulation capability.
On/off ratio
<2000 MHz: >80 dB.
≤
4000 MHz: >70 dB.
Rise/fall times
<10 ns.
Maximum repetition rate
10 MHz.
Video feedthrough
<30 mV (typical).
Delay
<60 ns (typical).
Pulse input
TTL level (±15V max).
5
10
5
0
0
Pager Encoder/Signaling (Option 1EP)
(HP 8648A only)
Adds functionality for testing POCSAG, FLEX™ 17 and
FLEX-TD. Also includes Modulation Generator functions of Option 1E2. Instrument characteristics are the same as the HP 8648A except as noted below.
Frequency
Accuracy with Option 1E5 18 : Typically ±0.15x10
–6 x carrier frequency in Hz or 0.092x10
–6 x carrier frequency in Hz within 90 days of calibration.
Frequency Modulation
FSK Deviation Accuracy with Option 1EP: ±60 Hz.
19
0.5
1 1.5
Tlime (Hours)
2 2.5
3
Pager Signaling
Supported Pager Protocols: POCSAG, FLEX™, and
FLEX-TD.
POCSAG
Speed: 512, 1200, and 2400 bps.
Message Format: Tone only, Numeric, Alphanumeric.
FLEX/FLEX-TD
Speed
2 Level FSK: 1600 and 3200 bps.
4 Level FSK: 3200 and 6400 bps.
Message Format: Tone only, Numeric (standard and special), Alphanumeric, HEX/Binary.
Address Type: Short, Long.
Messaging Accessible from Front Panel or HP-IB
Message Types: Five fixed (built-in), one user-defined.
Message Length: 40 characters maximum.
Repetition Modes: Single, Burst, Continuous.
Messaging Accessible only Over HP-IB
Message Type: Arbitrary (user-defined).
Batch Length
FLEX/FLEX-TD: 128 Frames.
POCSAG: 128 Batches.
Repetition Mode: Single only.
Data Rate Accuracy: ±5 ppm.
20
Modulation Source
Internal: 400 Hz or 1 kHz, or audio generator (see
Option 1E2 for characteristics), front panel BNC connector provided at nominally 1 Vp into 600 ohms.
General
Storage Registers: 70 storage registers with sequence and register number displayed. Up to 10 sequences are available with 30 registers each.
13 Only on HP 8648 series.
14 Specifications apply over the 25 ±5˚C range within one hour of dc FM calibration.
15 Only on HP 8648 series.
16 Useable from 10 Hz to 20 kHz; however, bandwidth limitations may result in waveform degradation. Refer to AM, FM, and Phase Modulation
Rate specs (External AC mode).
17 FLEX is a Motorola trademark.
18 After one hour warm-up and within one year of calibration.
19 Specifications apply over the 25 ±5˚C range, 4.8 kHz deviation.
Meets FLEX requirements at 274 to 288, 322 to 329, 929 to 932 MHz.
20 Specifications apply over the 25 ±5˚C range.
6
ISO 9002 Compliant
The HP 8647A and HP 8648A/B/C/D signal generators are manufactured in an ISO 9002 registered facility in concurrence with Hewlett-Packard’s commitment to quality.
Environmental
Operating temperature range
0˚ to 50˚C.
Shock and vibration
Meets MIL STD 28800E Type III, Class 5.
Leakage
Conducted and radiated interference meets MIL STD
461B RE02 Part 2 and CISPR 11. Leakage is typically
<1 µV (nominally 0.1 µV with a two-turn loop) at
≤
1001 MHz, when measured with a resonant dipole antenna one inch from any surface (except the rear panel) with output level <0 dBm (all inputs/outputs properly terminated).
General
Power requirements
90 to 264 V; 48 to 440 Hz; 170 VA maximum.
Internal diagnostics
Automatically executes on instrument power-up.
Assists user in locating instrument errors and locating faulty module.
Storage registers
300 storage registers with sequence and register number displayed. Up to 10 sequences are available with 30 registers each.
Weight
HP 8647A and HP 8648A
7 kg (15 lb.) net, 9 kg (20 lb.) shipping.
HP 8648B/C/D
8.5 kg (19 lb.) net, 11 kg (24 lb.) shipping.
Dimensions
HP 8647A
165H x 330W x 333D mm (6.5H x 13W x 13.2D inches).
HP 8648A/B/C/D
165H x 330W x 368D mm (6.5H x 13W x 14.6D inches).
Remote Programming
Interface
HP-IB (IEEE-488.2-1987) with Listen and Talk.
Control languages
SCPI version 1992.0. HP 8656B and 8657 code compatibility on HP 8648A/B/C/D.
Functions controlled
All functions are programmable except the front-panel power key, the knobs, the increment set key, the arrow keys, the reference keys and the rear-panel display contrast control.
IEEE-488 functions
SH1, AH1, T6, TE0, L4, LE0, SR1, RL1, PP0, DC1,
DT0, C0, E2.
Options
1EA: High power (HP 8648B/C/D).
1E2: Modulation generator (HP 8648A/B/C/D).
1E5: High stability timebase.
1E6: Pulse modulation (HP 8648B/C/D).
1EP: Pager encoder/signalling (HP 8648A).
1CM Rack kits
HP 8647A: P/N 08647-61020.
HP 8648A/B/C/D: P/N 08648-60001.
0B0: Delete manual.
0B1: Extra manual (includes service information).
W30: Three year warranty.
Accessories
Transit case
HP 8647A: P/N 5960-2229.
HP 8648A/B/C/D: P/N 5961-4720.
HP 83300A Remote Interface.
HP 83301A Memory Interface.
Translated Operating Manuals
Part Number Options Language
HP 8647A
AB0
AB1
AB2
ABE
ABJ
Chinese for Taiwan
Korean
Chinese for PRC
Spanish
Japanese
HP 8648A/B/C/D
AB0
AB1
AB2
ABD
ABE
ABF
ABJ
Chinese for Taiwan
Korean
Chinese for PRC
German
Spanish
French
Japanese
08647-90010
08647-90011
08647-90012
08647-90013
08647-90016
08648-90002
08648-90006
08648-90004
08648-90019
08648-90003
08648-90020
08648-90005
INPUT OUTPUT
DISPLAY
CONTRAST REMOTE
FRONT PANEL
HP 8647/8648 rear panel
FUSE 3A
HP-IB
7
®
For more information on
Hewlett-Packard Test & Measurement products, applications or services please call your local Hewlett-Packard sales office. A current listing is available via Web through AccessHP at http://www.hp.com. If you do not have access to the Internet, please contact one of the HP centers listed below and they will direct you to your nearest HP representative.
United States:
Hewlett-Packard Company
Test and Measurement Organization
5301 Stevens Creek Blvd.
Bldg. 51L-SC
Santa Clara, CA 95052-8059
1 800 452 4844
Canada:
Hewlett-Packard Canada Ltd.
5150 Spectrum Way
Mississauga, Ontario L4W 5G1
(905) 206 4725
Europe:
Hewlett-Packard
European Marketing Centre
P.O. Box 999
1180 AZ Amstelveen
The Netherlands
Japan:
Hewlett-Packard Japan Ltd.
Measurement Assistance Center
9-1, Takakura-Cho, Hachioji-Shi,
Tokyo 192, Japan
(81) 426 48 3860
Latin America:
Hewlett-Packard
Latin American Region Headquarters
5200 Blue Lagoon Drive, 9th Floor
Miami, Florida 33126, U.S.A.
(305) 267 4245/4220
Australia/New Zealand:
Hewlett-Packard Australia Ltd.
31-41 Joseph Street
Blackburn, Victoria 3130, Australia
131 347 Ext. 2902
Asia Pacific:
Hewlett-Packard Asia Pacific Ltd.
17-21/F Shell Tower, Time Square,
1 Matheson Street, Causeway Bay,
Hong Kong
(852) 2599 7070
Data Subject to Change
Copyright © 1996
Hewlett-Packard Company
Printed in U.S.A. 7/96
5965-3432E
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