Chapter 2 Self Test

Question 0

(007) 2. How long does a round robin last?

Answer 0

Approximately 40 seconds

Question 1

(007) 1. How is message decimation to the entire squadron achieved?

Answer 1

All messages in the system need to be retransmitted by each receiving facility.

Question 2

(007) 3. What status display category would an IZ violation fall under?

Answer 2

Priority 4- Security

Question 3

(007) 4. Why would a LCC take over another LCC’s timeslot?

Answer 3

The LCC fails to transmit an OSI for a period of 240 seconds resulting in a LCC down condition.

Question 4

(008) 1. What does the Minuteman cable communications system use for squadron monitoring and launch control functions?

Answer 4

Digital diphase signal of 1,300 bits per second

Question 5

(008) 2. A sync consists of what?

Answer 5

A single cycle of 433 1/3 Hz symmetrical square wave

Question 6

(008) 3. When is ALCC entry permitted?

Answer 6

The LF has not received a valid OSI; the ALCC hold-off timer has expired; in a 240-second period; or the LF has a SDU alarm and has not received a valid clear-text OSI for 330 seconds. ALCC access may be induced manually by having all LCCs delete all time slots for a period exceeding 240 seconds or by initiating a short ALCC hold-off command and the following ALCC hold-off timer to expire.

Question 7

(008) During an operational test of the UHF radio receiver, what is the only LF response, if ALCC access is not permitted?

Answer 7

An operational status indication that radio data were present at the transfer link.

Question 8

(009) 1. What does a preparatory launch command (PLC)-A do?

Answer 8

To configure the missile squadron to a common execution plan.

Question 9

(009) 2. What does the system use to generate the six random alphabetic characters used in the enable command (ENC) command?

Answer 9

The 32-bit cooperative enable counter, the SDU secondary keying variable,and the unlock code.

Question 10

(009) 3. What command is used to terminate the enabled mode or te launch commanded mode?

Answer 10

Inhibit launch command

Question 11

(009) 4. In what message form is an overwrite command issued to a LF?

Answer 11

Encrypted

Question 12

(009) 5. When is an IMU performance data halt command transmitted?

Answer 12

In the first half of the time slot

Question 13

(010) 1. How are interrogations generated?

Answer 13

By the system automatically or selected to be run manually

Question 14

(010) 2. After a MOSI is initiated, when does the PG at the LF transfer the message to the DCU?

Answer 14

Upon recognition of the response identifier bit

Question 15

(010) 3. When does the DCU send a RSI?

Answer 15

In response to a detected out-of-crypto sync condition

Question 16

(011) 1. What test checks certain LF electronic ground equipment not automatically checked during normal operation?

Answer 16

Sensitive command network test (SCNT)

Question 17

(011) 2. Once a missile test command is received, how long will the DCU inhibit future missile tests to prevent overheating of the nozzle control unit?

Answer 17

30 minutesa

Question 18

(011) 3. How many sums of the DCU memory are computed during a computer memory verification check?

Answer 18

Five

Question 19

(012) 1. What mode must all RDC transmissions must be in?

Answer 19

Encrypted

Question 20

(012) 2. How many LCCs are normally required to initiate an RDCT?

Answer 20

Two LCCs-an active and a monitor

Question 21

(012) 3. What will cause an LF to begin calculating a checksum of the transferred data?

Answer 21

The RDT command is issued from the active RDC LCC to the targeted LF to indicate completion of the RDC transfer.

Question 22

(013) 1. Where does the LDB panel in the LER get its power from?

Answer 22

Power from the LDA panel energizes the LDB panel in the LER through the primary power filter.

Question 23

(013) 2. What type of power is generated by the DEU during a commercial power failure?

Answer 23

120/208 VAC, 3O, 60-Hz power

Question 24

(013) 3. Where does AC input power for the motor generator and battery charger/alarm set group come from?

Answer 24

The LDB panel

Question 25

(013) 4. What is the purpose of the battery charger portion of the battery charger/alarm set group?

Answer 25

Provides charging current to the storage battery set in the lower LER and power to the OGE and missile.

Question 26

(013) 5. Why do OGE components in the LER use a 400-Hz power instead of the normal 60-Hz power?

Answer 26

It is a cleaner power source and doesn’t require as much filtering.

Question 27

(013) 6. How does the motor-generator ensure an interrupted source of power for critical loads in the LER?

Answer 27

In the event of an AC primary power failure, the brush-lifting solenoid is de-energized causing the brushes to fall on the DC motor. Without AC primary power, the AC motor stops and with the DC brushes on the commutator of the DC motor, the DC motor drives the generator. This ensures power is not interrupted to critical loads in the LER.

Question 28

(013) 7. What is the difference between the safety control switch in the armed position and the safe position?

Answer 28

In the armed position, the SCS connects to the ordnance devices of the missile. In the safe position, the SCS connects ordnance circuits to test loads.

Question 29

(014) 1. What topside power functions does the LCEB DEU at wings 3 and 5 support?

Answer 29

None, the wings 3 and 5 power system energizes the LCEB and LCC only, there is a separate diesel generator and commercial power input for the LCSB topside.

Question 30

(014) 2. How does the motor-generator start pushbutton switch keep the MPP from disconnecting commercial power during motor-generator startup?

Answer 30

The motor-generator start pushbutton switch interrupts the disconnect circuit during motor-generator start up so commercial power cannot be disconnected by the MPP.

Question 31

(014) 3. What are the critical loads powered in the LCC power system?

Answer 31

The REACT console and all of the communication equipment required to launch the missile.

Question 32

(014) 4. What is the main difference between the motor-generator at the LF and MAF?

Answer 32

The MAF motor-generator also contains a 60-Hz generator

Question 33

(014) 5. What is a MAF designated at wings 3 and 5 if it has 12 storage batteries?

Answer 33

Alternate command post or squadron command post

Question 34

(014) 6. What is the purpose of the 48-amp and 12-amp power supply in the power supply group?

Answer 34

Converts the 400-Hz motor generator output (routed from the D-box) to 28 VDC for use by the communications and other launch control load in the LCC.

Question 35

(014) 7. What is the purpose of the PCDU?

Answer 35

Receives all incoming power into the console and distributes it to the console equipment.