Volume 1 (5) 022 - 029

Front 1

the component of EW involving the use of electromagnetic, directed energy, or anti-radiation weapons to attack personnel, facilities or equipment with the intent of degrading, neutralizing or destroying enemy combat capability.”

Back 1

electronic attack (EA)

Front 2

Any actions that we take to protect our people, facilities, and equipment from any EA action that can degrade or destroy our capabilities, fall under the heading of...;
examples that apply to our radar system would include active decoys to draw missiles off target, and the varying of pulse repetition frequency on a radar set

Back 2

electronic protection (EP)

Front 3

the means of putting a picture together for battlefield commanders to allow them to have an accurate picture of the use of the electromagnetic spectrum within their area of responsibility

Back 3

electronic support (ES)

Front 4

multirange, multifunction instrument used to measure alternating-current (AC) or direct current (DC) voltage, AC or DC current, AC or DC frequency, and resistance

Back 4

multimeter

Front 5

one red and one black) serve all functions and all ranges of the meter. The two test leads are color-coded so that the correct lead is inserted

Back 5

terminal jack

Front 6

a device we use for measuring the reflectance of a radiant energy. It is a portable test set that uses radar principles to test cables and provides a visual display of cable faults.

It can locate splices, water in the cable, split pairs, and discontinuities or faults. operates on the principle similar to that of radar

Back 6

TDR (time domain reflectometer)

Front 7

upward deflections (“pips”) indicate high impedance mismatches or...

Back 7

opens

Front 8

downward deflections (“pips”) or low impedance matches indicate a...

Back 8

short

Front 9

an oscilloscope with a built-in laser that sends a light pulse into the end of a fiber and measures the loss of light as it’s reflected back to the source.

Since we know the speed of light through the fiber, we can calculate the distance to cable ends, splice points, and interconnects from each light pulse’s time of flight

Back 9

OTDR (optical time domain reflectometer)

Front 10

The part of the scattered energy that travels back toward the optical source is called the...

Back 10

backscatter

Front 11

the backscatter coefficient is expressed in...

Back 11

dB

Front 12

a quick and easy method for determining the quality of a network connection or channel

Back 12

(BERT) bit error rate test

Front 13

the transmitter creates what kind of test pattern? ; The total number of bits in the pattern identifies the test pattern: ex. 63, 511, 2047, and so forth.

Back 13

pseudo-random test

Front 14

the total number of bits received in error divided by the total number of bits transmitted.

Back 14

AVG BER

Front 15

the ratio of the number of seconds that are error-free to the total number of total seconds in the measurement interval.

Back 15

%EFS (error free)

Front 16

two successive logic one pulses of the same polarity, which is a violation of AMI coding rules.

Back 16

BPV (bipolar violations)

Front 17

when the position of the individual bits are not where they should be.

Back 17

bit slips

Front 18

when an incorrect value occurs in a bit position reserved for a framing bit. Bad cable connections, crosstalk, or improper timing normally causes frame errors.

Back 18

FRA ERR (frame errors)

Front 19

compares the calculated CRC with the CRC in the frames it receives

Back 19

CRC ERR

Front 20

designed to monitor and access all 25 conductors of EIA RS–232 and ITU V.24 interfaces between data modems and terminals.

Twenty-four miniature switches allow all interface conductors (except frame ground on pin 1) to be individually interrupted for isolated testing and observation of terminal and modem lines

Back 20

breakout box

Front 21

it allows for the measurement of voltage, current and resistance

Back 21

multimeter

Front 22

how is a multimeter connected in a circuit to measure ampers?

Back 22

in series

Front 23

how is a multimeter connected in a circuit to measure voltage?

Back 23

in parallel

Front 24

when taking a resistance reading, what is the precaution you should take?

Back 24

turn off the power

Front 25

displays the pulse’s progression from application to the cable on the left-hand side of the display to its return at the right. From the display, one can determine the distance down the cable to where the fault is and the type and severity of the fault.

Back 25

CRT

Front 26

Used to select the input/output impedance of the time domain reflectometer. You can select 50, 75, 95, and 125Ω impedances.

Back 26

impeadence selector buttons

Front 27

what are the two modes of operation for the TD-9930 OTDR?

Back 27

(1) REAL-TIME operation, reflections are amplified and displayed directly on the CRT for examination.
(2) AVG (AVERAGE) mode, the amplified signals are averaged to reduce noise, then stored as digital data. 2

Front 28

what are the four types of cable tests that the OTDR can do?

Back 28

Cable acceptance testing; cable installation; end-to-end tests; fault location.

Front 29

what index factor is the OTDR already able to accept by default?

Back 29

1.470

Front 30

what are the two major portions of the BERT that create and receive a test pattern?

Back 30

transmitter and reciever

Front 31

what is the purpose of a breakout box?

Back 31

To monitor and access all 25 conductors of EIA RS–232 and ITU V.24 interfaces between data modems and terminals.

Front 32

what is the purpose of the 24 on/off switches on a breakout box?

Back 32

To allow all interface conductors (except frame ground pin 1) to be interrupted individually for isolated testing and observation.

Front 33

which AF doctrine defines an electronic attack?

Back 33

AFDD 2-5.1