Agilent/HP / Impedance Analyzer / 4191A

*Frequency range : 1MHz-1GHz
*1-1000MHz varoable test frequency 
with sweep capability
*Display : 4½digit,max display 19999 
counts
*Frequency accuracy : ±3 ppm
*Signal level(into 50 Ω) : -20 ±3 dBm
*Frequency control : spot and swept
*Measuring Mode 
 -Spot measurent : at specific 
  frequency(or dc bias)
 -Swept measurement : manual or automatic 
  sweep from start to stop frequency(or 
  dc bias)at step frequency (or dc bias) 
  rate in linear or logarithmic form.
*Auto Calibration : Automatic error
compensation refenced to connected termina-
tions (0Ω,50 Ω,0 S),51 frequencies  
including start and stop fre-quencies.
*Internal dc Bias --
 Voltage :-40 to +40 V,10 mV step
 Setting accuracy : 0.1% of setting +10 mV
 Bias control : spot and swept
*External dc Bias --
 Voltage range : -40 to +40 V
 Max allowable current : 100 mA
*Key status memory : 2 sets of measuring
conditions can be stored and recalled at
any time.These conditions are kept in 
storage even when LINE is turned off.
*Ranging : Auto/Range hold
*Trigger : Internal,External or Manual
*Self-test : automatic internal program
test
*Direct reacing of 
lZl- θ,lYl-θ,lTl-θ,L,C-R,G,D,Q,R-X,G-B,Tx-TY
*High resolution 4 1/2 digit max

OPTION