HP8657B 

Frequency: 100KHz-2060MHz 
Level: +13 dBm ~-143.5dBm 
Economy RF Signal Generator 
HP8647A and HP8648A/B/C/D 

Throughout the 2.5GHz range, the level accuracy ± 1dB 
4Hz at 500MHz on the residual FM 
Electronic attenuator (1GHz type) 
Power output of +10 / +13 ~-136dBm 
Simple operation, reliable 
Generate paging signaling (HP8648A Option 1EP) 
Modulation: AM, FM, phase modulation 
Ordering Information 
HP8647A: 250 kHz ~ 1000 MHz 
HP8648A: 100kHz ~ 1000 MHz 
HP8648B: 9 kHz ~ 2000 MHz 
HP8648C: 9 kHz ~ 3200 MHz 
HP8648D: 9 kHz ~ 4000 MHz 
Opt 1EA high-power (only for HP 8648B/C/D) 
Opt 1EP Pager encoder (only for 8648A) 
Opt 1E6 pulse (only for HP 8648 B / C / D) 
Modulation Generator Opt 1E2 
Opt 1E5 high stability time base 
HP83300A Remote Control Interface 
HP83301A Memory Interface 


Other notes: 
Economy RF Signal Generator 
HP8647A and HP8648A/B/C/D 

Throughout the 2.5GHz range, the level accuracy ± 1dB 
4Hz at 500MHz on the residual FM 
Electronic attenuator (1GHz type) 
Power output of +10 / +13 ~-136dBm 
Simple operation, reliable 
Generate paging signaling (HP8648A Option 1EP) 

HP8647A synthesized signal generator and 8648A/B/C/D 

Leader in economical signal generator 
HP8647A synthesized signal generator and 8648A/B/C/D series of stable, reliable and inexpensive. These types of signal generator to the receiver with the required characteristics of semi-automatic testing can be used to 100kHz ~ 4000MHz frequency range of a variety of general-purpose applications. 

High reliability, easy to use 
In accordance with HP's strict quality standards, these types of signal generators to provide stable and consistent performance. HP8647A and HP8648A fully electronic attenuator is very easy to deal with the conversion rate of one million times, and the output level a high degree of repetition. User-friendly front panel interface to be able to shorten the process and are familiar with the operator's efficiency. In order to function block configure the panel to speed up the establishment of test procedures and simplify operations. 

Ideal for manufacturing and semi-automatic test equipment 
HP 8647A, and 8648 series is to create high-volume products such as cordless phones, pagers and two-way radio communication sets the ideal instrument. HP8647A is to provide the important properties of the basic model. HP8648 Series In addition to the optional high-power, pulse modulation and waveform modulation, the in the frequency range, residual FM, level accuracy and phase noise has improved. HP8648 series until the 2.5GHz have an absolute amplitude accuracy of ± 1dB. All kinds of models provide a super-stable dc FM, at frequencies below 100 MHz carrier frequency accuracy of ± 500Hz, and low RF leakage. 
A number of applications such as receiver tuning and adjustments have benefited from a simple user interface. These types of signal generator is easy to learn and use, eliminating the need for experienced operators. With 300 full-storage registers and 10 can be user-defined sequence, so the signal generator is easy to adapt to any of the testing process. Once the settings are stored to the register, the operator can be off the front panel or remote control keyboard (HP83300A) for their programming quickly. In addition, HP83301A memory interface also provides information from the register one HP8647/48 sent to another means. 
For automated test applications, HP8647/48 offers a complete GPIB programming and the use of SCPI programming code. In addition, HP8648 series by providing HP8656B and HP8657A / B signal generator is fully compatible with the GPIB yards while reducing software development costs. 

Cost-effective method of testing new pager 
HP 8648A Option 1EP associated with the use of pagers testing provides an economical single solution. HP8648A Option 1EP able to add to PDCSAG, FLEX and FLEX-TD format encoding capabilities of the pager. Pager during testing, HP8648A with option 1EP GC can give excellent frequency accuracy, precision, and dc offset frequency performance. 

Main Technical Specifications 
Frequency 
HP8647A: 250 kHz ~ 1000 MHz 
HP8648A: 100kHz ~ 1000 MHz 
HP8648B: 9 kHz ~ 2000 MHz 
HP8648C: 9 kHz ~ 3200 MHz 
HP8648D: 9 kHz ~ 4000 MHz 
Resolution 
HP8647A: 1Hz; 
HP8648A/B/C/D: 0.001 Hz 
Showing: 10 Hz 
Conversion rate (typical value) 
HP8647A: <120ms 
HP8648A/B/C/D: <1001 MHz: <75 ms; ≥ 1001 MHz: <100 ms 
Accuracy (after 1 hour warm-and in the calibration period of 1 year or less): 
A typical value of ± 3 × 10-6 × carrier frequency (in Hz); 
For Option 1E5 is ± 0.15 × 10-6 × carrier frequency (typical value ± 0.072 × 10-6 × fc) 
Internal reference oscillator 
Precision and stability (with calibration adjustments related to 1 hour after warm-and in the calibration period of 1 year or less), ± aging rate ± temperature effects ± Supply Voltage 

Standards-based options 1E5 
Aging rate <± 2 ppm / year <± 0.1 ppm / year 
<± 0.0005 ppm / day 
Temperature influence <± 1 ppm <± 0.01 ppm 
Affect the supply voltage (± 0.5% time) <± 0.5 ppm 

Output: 10 MHz, the typical value of> 0.5 V rms (50Ω load) 
An external reference oscillator input: 2,5,10 MHz ± 5ppm to accept the input level range of 0.5 ~ 2Vrms (50Ω load) 

Spectral purity 
Harmonic (output ≤ 4dBm): <-30dBc 
Sub-harmonic (output ≤ +4 dBm): 
<1001MHz:-60dBc; 
> 1001MHz:-50dBc; 
> 3200MHz:-40dBc; 
Non-harmonics: (≥ 5kHz offset, ≤ +4 dBm output level) 
HP 8647A: <-60 dBc (220 ~ 250 MHz, -55 dBc) 
HP 8648A/B/C/D: 
<-249 MHz: <-55 dBc; 
<2001 MHz: <-54 dBc 
<-1001 MHz: <-60 dBc; 
≤ 4000 MHz: <-48 dBc 
Residual modulation (CCITT, rms) 
HP 8647A 
<249 MHz: <20 Hz, typically <11 Hz 
<501 MHz: <10 Hz, typically <6 Hz 
≤ 1000 MHz: <20 Hz, typically <1 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 

SSB phase noise (at 20 kHz offset at a typical value) 
HP 8647A 
In the fc = 500 MHz at: <-110 dBc / Hz; 
In the fc = 1000 MHz at: <-106 dBc / Hz 
HP 8648A/B/C/D 
In the fc = 500 MHz at: <-120 dBc / Hz; 
In the fc = 3000 MHz at: <-106 dBc / Hz 
In the fc = 1000 MHz at: <-116 dBc / Hz; 
In the fc = 4000 MHz at: <-104 dBc / Hz 
In the fc = 2000 MHz at: <-110 dBc / Hz 

Output Level 
Range 
HP 8647A and HP 8648A: +10 ~ -136 dBm; 
HP 8648B/C/D: 
≤ 2500 MHz: +13 ~ -136 dBm; 
> 2500 MHz: +10 ~ -136 dBm 


8648B/C/D Use Option 1EA (high power), the maximum power 
Frequency (MHz) <0.1 ≤ 1000 ≤ 1500 ≤ 2100 ≤ 2500 ≤ 4000 
Power (dBm) +17 +20 +19 +17 +15 +13