HP 120A - Page 4

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SPECIFICATIONS (CONT ’ D.)
HORIZONTAL AMPLIFIER
Bandwidth: De coupled: de to 200 kc.
Ac coupled: 2 cps to 200 kc.
Bandwidth is independent of attenuator setting.
Sensitivity:
0.1 volt/cm to 100 volts/cm. 3 calibrated steps, accurate within ±5%, . lv/
cm, 1 v/cm, and 10 v/cm. Vernier permits continuous adjustment of sen 
sitivity between steps and extends 10 v/cm step to at least 100 v/cm.
Input Connector: 2 banana plugs, spaced 3/4".
Input Impedance: 1 megohm, nominal, shunted by less than lOO/^if.
Phase Shift:
Horizontal and vertical amplifiers have same phase characteristics with 
in ±2° to 100 kc.
GENERAL
Cathode Ray Tube:
CRT Bezel:
5AQP1 mono-accelerator normally supplied; 2500 volt accelerating poten 
tial. P7 and Pll phosphors are also available. P2 is available if desired
for special applications.
Light proof bezel provides firm mount for oscilloscope camera and is re 
moved easily for quick change of filter.
CRT Plates: Direct connection to deflection plates via terminals on rear. Sensitivity
approximately 20 v/cm.
Intensity Modulated:
Filter Supplied
Terminals on rear. +20 v to blank trace of normal intensity.
Color of filter compatible with CRT phosphor supplied:
Green with Pl and P2
Blue or amber with P7
Blue with Pll.
Illuminated Graticule:
Edge lighted with controlled illumination, 10 cm x 10 cm, marked in cm
squares. Major horizontal and vertical axes have 2 mm subdivisions .
Dimensions:
Cabinet Mount: 9-3/4" wide, 15" high, 21-1/4" deep.
Rack Mount: 19" wide, 7" high, 21-1/4" deep.
19-1/2" deep behind panel.
Weight: Cabinet Mount: Net 34 lbs. , shipping 50 lbs.
Rack Mount: Net 32 lbs. , shipping 47 lbs.
Power: 115/230 volts ±10%, 50-1000 cps; 130 watts.
Equipment Slides:
Can be installed at the factory on special order for easy withdrawal of
Rack Mount from Equipment rack. Specification No. 12001.
Accessories Available:
AC-83A Viewing Hood; face-fitting molded rubber.
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