Test Equipment-CONT.

TM 11-5895-878-14&P

of 80 or 128 characters.

scale at any frequency between 5 Hz and 600 KHz.

Harmonics are indicated up to 3 MHz.

Noise is

(2) Signal Distortion Analyzer TS-28621GGM-

measured as low as 50 microvolts and voltages may be

15(V). This unit performs three major functions:

measured up to 3MH: with 300/-V to 300 full scale.

Distortion analysis, distortion monitoring,

q. Wave Analyzer HP-302A. The Model 302A

and error rate determination.

Wave Analyzer separates a complex input signal into

(3) Oscilloscope OS-20/GGM-15(V).

This

individual frequency components such as harmonic,

unit is used to display the signal under analysis.

intermodulation

products,

and

other

spectral

k. Phase Jitter Meter, Model 48 (fig. 1-15). The

components. By tuning the 302A across the spectrum,

model 48 phase jitter meter measures the following:

the components can be individually measured and

(1) Peak to peak phase jitter.

evaluated. Frequency is read in Hz from the dial, and

(2) Phase, amplitude, coincident hits and

amplitude is read in volts, percent or dB from the meter.

dropouts.

The 302A is also an oscillator-tune voltmeter

(3) Meters input/output levels and input

combination. This feature is particularly useful for

frequency.

measuring input-output characteristics of filters,

amplifiers, and active devices. The oscillator output

(4) External jitter, frequency offset, and

(BFO) and the analyzer's input tuning track together

totalizer outputs.

over the entire range of 20 Hz and 50 kHz and is

I. Impulse Noise Counter. The impulse noise

controlled by the tuning dial. Because one control tunes

counter is a Northeast Electronics Corporation Model

both the oscillator output and the analyzer input

TSS58AR.

simultaneously, on-estep response measurements are

The unit counts the number of impulses

made simply, quickly and conveniently. And, since the

exceeding three different selected levels for a selected

analyzer has a very narrow bandpass, any signal

length of time. The unit provides three indications, each

distortion has negligible effect on the meter reading,

giving the number of times an impulse exceeds the

making measurements highly accurate even at very low

associated adjusted level.

levels.

m. Dual-Channel Recorder, HP-7702B and 7034A.

r. Multimeter HP-3490A.

The HP-3490A

The recorders are used for simultaneous recording of

Multimeter is a five-digit integrating digital voltmeter.

two related variables when the variables are to be

The basic instrument measures dc voltages, ac

analyzed with respect to each other and with respect to

voltages, and resistances. Additional measurement

time, and when any variable needs to be permanently

capability is achieved by the addition of low cost

recorded.

options. The HP-3490A uses a C dual slope integrating

n. Digital Recorder HP-5050B. The digital recorder

technique and is fully guarded, providing excellent noise

provides a versatile method for recording time with 0.1

immunity at five readings per second on all dc ranges.

second resolution along with other data measurements

Ranging is automatic over all ranges on all functions.

being recorded by a printer. In addition the recorder

DC measurements can be made with 1 V of ac voltage

serves as an automatic measuring-recording system

resolution. Ohms measurements can be made, utilizing

programmer by allowing printing at preselected time

the four-wire conversion technique which eliminates

intervals.

errors due to test lead resistances. Six ranges of ohms,

o. Vector Impedance Meter, HP-4800A. The HP-

including a 10,000 Kohm range, are provided. All

4800A is used to make fast measurements of

functions and ranges include 20% overranging except

impedance to 10 megohms and phase to 90 The

the 1000 V range.

measurement can be made at a particular frequency or

over a continuous range from 5Hz to 50kHz.

p. Distortion Analyzer HP-334A. The HP-334A

measures total distortion down to 0.1 percent of full

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