Model 175A Section I
Paragraphs 1-1 to 1-8
SECTION I
GENERAL INFORMATION
1-1. DES C R I PTI 0 N. b. Accessories. Each oscilloscope is supplied with
1-2. The @ Model 175A Oscilloscope is a calibrated two Model 10003A (AC-21M) high-impedance probes
general-purpose test instrument with a vertical band- and a detachable power cable.
width of 50 megacycles and a 6 x 10 cm display. Op-
tional plug-in units and accessories are available to 1-5. INSTRUMENT IDENTIFICATION.
increase the versatility of this instrument. Specifi- 1-6. Hewlett-Packard uses a two-section eight-digit
cations are listed in table 1-1. serial number (000-00000). If the first three digits
of the serial number on your instrument do not agree
with those on the title page of this manual, change
sheets supplied with the manual will define differences
1-3. AUXILIARY EQUIPMENT. between your instrument andthe Model 175A described
in this manual.
1-4. Available associated equipment and accessories
are listed in table 1-2. 1-7. WARRANTY.
a. Plug-Ins. Plug-in units for the Model 175A in- 1-8. Both the cathode-ray tube (crt) and Model 175A
clude dual-trace and single-trace vertical amplifiers carry Hewlett-Packard warranties. The crt warranty
which collectively cover 5 mv/cm to 20 v/cm sensi- is illustrated in figure 1-2, and a copy is included at
tivities and dc to 50-mc bandwidth. Horizontal units the back of this manual for your use in the event of
include single sweep, sweep delay, a time-mark tube failure within the warranty period. The Model
generator, and a display scanner. 175A warranty is also at the back of this manual.
Table 1-1. Specifications
SWEEP GENERATOR VERTICAL AMPLIFTER
Internal Sweep: Bandwidth: DC to greater than 50 mc
24 ranges, 0.1 psec/cm to 5 sec/cm *3%. Ver-
nier provides continuous adjustment between CALIBRATOR
ranges and extends slowest sweep to at least Type:
12.5 sec/cm. Approximately 1000-cycle square wave, approxi-
Magnification: X10 (*5%) mately 3 psec rise time
Voltage:
Triggering: 2 ranges, 1 volt and 10 volts peak-to-peak,
Internal - Vertical input signal (from 2 mm *l%, 15°C to 35°C
below 1 mc to approximately 2 cm at 50 mc).
External - Either capacitive- or direct-coupled, CATHODE-RAY TUBE
from any signal 0.5 volt peak-to-peakor more.
Type:
Triggering Point: @ post accelerator, 12-kv accelerating potential.
Internal - Any level of positive- or negative- Type P31-AL phosphor standard. For other
going signal displayed on the crt graticule. phosphors, see OPTIONS.
External - Any level between +5 and -5 volts
on either the positive- or negative-going por- Graticule:
tion of the vertical signal. Internal, 6 x 10 cm, marked in centimeter
squares. Major horizontal and vertical axes
have 2-millimeter subdivisions.
HORIZONTAL AMP LIFTER
Bandwidth DC to 500 kc Intensity Modulation:
Approximately +20-volt pulse will blank trace
Sensitivity: of normal intensity
2 ranges, 0.1 volt/cm and 1 volt/cm. Vernier
provides continuous adjustment between ranges GENERAL
and extends minimum sensitivity to 10 volts per Power Requirements:
centimeter. 115 or 230 volts ac *lo%, 50 to 60 cps, approxi-
Input Impedance: mately 425 watts maximum (depends on plug-ins
1 megohm shunted by approximately 30 pf used).
01526-1 1-1 |
ACEC
HEWLETT-PACKARD
