HP 400E Operating And Service Manual page 7

Model 400E/EL Page 3
Relative signal reading option—Available on special
order, the 400E/EL (Option 02.) provides a front-panel
relative measurement control allowing a 3 db reduction in
sensitivity on each calibration range. This feature enables
the user to set the meter to a convenient level (such as 0
db) for relative measurements. The control is detented in
the absolute position to disconnect the relative measuring weciais
circuitry and to ensure calibration accuracy. d tun ena
BEWLETT Gp racanee
Constant Input Capacity Option—Available on special
order, the 400E,EL (Option:03) provides constant input
capacity (28 pf) on all ranges and 10 megohms input
resistance.
y ABSOLUTE."
SPECIFICATIONS
Calibration reads rms value of sine wave; voltage indication pro-
portional to absolute average value of applied wave;
3 MV to 300 V RANGES
db scale —10 to + 2 db, 10 db between ranges: 100
Frequency 10CPS 20CPS 40CPS 500 KC 2MC
divisions on 0 to | scale.
1MC 4MC 10 MC
AT FULL SCALE
AT 1/3 FULL SCALE
reads rms value of sine wave; voltage indication propor-
tional to absolute average value of applied wave: linear|'
db scale —10 db to +2 db. 10 db between ranges:
logarithmic voltage scales 0.3 to | and 0.8 to 3: 120
divisions from — 10 to +2 db.
HP MODEL 400E
ACCURACY % Of Reading
ACCURACY % Of Reading
1 MY RANGE
200 KC 1MC 4MC
AT FULL SCALE
AT 1/3 FULL SCALE
— 10
AT 1/10 FULL SCALE