Chapter 2 Self Test Flashcards
(007) 2. How long does a round robin last?
Approximately 40 seconds
(007) 1. How is message decimation to the entire squadron achieved?
All messages in the system need to be retransmitted by each receiving facility.
(007) 3. What status display category would an IZ violation fall under?
Priority 4- Security
(007) 4. Why would a LCC take over another LCC’s timeslot?
The LCC fails to transmit an OSI for a period of 240 seconds resulting in a LCC down condition.
(008) 1. What does the Minuteman cable communications system use for squadron monitoring and launch control functions?
Digital diphase signal of 1,300 bits per second
(008) 2. A sync consists of what?
A single cycle of 433 1/3 Hz symmetrical square wave
(008) 3. When is ALCC entry permitted?
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.
(008) During an operational test of the UHF radio receiver, what is the only LF response, if ALCC access is not permitted?
An operational status indication that radio data were present at the transfer link.
(009) 1. What does a preparatory launch command (PLC)-A do?
To configure the missile squadron to a common execution plan.
(009) 2. What does the system use to generate the six random alphabetic characters used in the enable command (ENC) command?
The 32-bit cooperative enable counter, the SDU secondary keying variable,and the unlock code.
(009) 3. What command is used to terminate the enabled mode or te launch commanded mode?
Inhibit launch command
(009) 4. In what message form is an overwrite command issued to a LF?
Encrypted
(009) 5. When is an IMU performance data halt command transmitted?
In the first half of the time slot
(010) 1. How are interrogations generated?
By the system automatically or selected to be run manually
(010) 2. After a MOSI is initiated, when does the PG at the LF transfer the message to the DCU?
Upon recognition of the response identifier bit
(010) 3. When does the DCU send a RSI?
In response to a detected out-of-crypto sync condition
(011) 1. What test checks certain LF electronic ground equipment not automatically checked during normal operation?
Sensitive command network test (SCNT)
(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?
30 minutesa
(011) 3. How many sums of the DCU memory are computed during a computer memory verification check?
Five
(012) 1. What mode must all RDC transmissions must be in?
Encrypted
(012) 2. How many LCCs are normally required to initiate an RDCT?
Two LCCs-an active and a monitor
(012) 3. What will cause an LF to begin calculating a checksum of the transferred data?
The RDT command is issued from the active RDC LCC to the targeted LF to indicate completion of the RDC transfer.
(013) 1. Where does the LDB panel in the LER get its power from?
Power from the LDA panel energizes the LDB panel in the LER through the primary power filter.
(013) 2. What type of power is generated by the DEU during a commercial power failure?
120/208 VAC, 3O, 60-Hz power
