The system in problem $1$a is converted to a packetized operation in nominal$$

mode. Packets are inserted in the frames, and measurements plus leading$$

identifiers are placed in the packets.$$

$$

Nominal mode frames are sized to $3000$ bits.$$

$$

Each packet has $10$ bytes of overhead information.$$

$$

a$)$ bit resolution$$

$$

a$\mathrm{.}1)$ How many bits must be used for unique telemetry identifiers?$$

$$

a$\mathrm{.}2)$ How large must a packet be to accomodate all nominal mode measurements in$$

one packet?$$

$$

a$\mathrm{.}3)$ What percentage of the frame contains measurement data, on average?$$

$$

a$\mathrm{.}4)$ How many seconds does it take to downlink one packet, if the packet starts$$

at the beginning of the data space of a frame?$$

$$

b$)$ byte resolution$$

$$

b$\mathrm{.}1)$ If measurements are limited to byte resolution, how large must a packet$$

be$,$ in bits, to accomodate all nominal mode measurements in one packet?$$

$$

b$\mathrm{.}2)$ On average, what percentage of each frame contains measurement data?Problen. $1$

A mission has a safe mode emergenoy domlink rate of $7\mathrm{.}125$ bps and a marimum

downlink rate of $1000bps.$ There are $200$ measurements total on the wission.

The following subset of measurements are downlinked under safe mode operations

at $7\mathrm{.}125b$

All the measurements are downlinked under nouinal operations, with the given

nuber of signifiont bits!

Each frame arriving contains $20$ bytes of synohronization data at the start, $4$

bytes of CRC information, $2$ bytes of frame number, $4$ bytes of time, and $4$ bytes

of trailing information.

The emergenoy $7\mathrm{.}125$ bps frame has a different data length than the nowinal

operations $1000$ bps frame, and is sized so as not to waste any bits.

Data is placed in the frame using a telenetry map.

a$\mathrm{.}1)$ If all the safe mode data is placed in the frame without comuatation, how

many bits in length is the emergenoy mode frame?

a$\mathrm{.}2)$ How many seconds does it take to downink one frame?

a$\mathrm{.}3)$ what percentage of the frame contains data?

b$\mathrm{.}1)$ If all the nouinal data is placed in the frame without aomuatation, how

many bits in length is the nominal mode frame?

b$\mathrm{.}2)$ How many seconds does it take to domlink one frame?

b$\mathrm{.}3)$ what percentage of the frame contains data?

$0\mathrm{.}1$ If $5$ of the $100$ bit measurements in the nominal frame of parts a and $b,$ are

conumtated together using a single seguent of $100$ bits, how many bits in length is the

nouinal mode frame?

$0\mathrm{.}2$ How many seconds does it take to downlink one frame?

$0\mathrm{.}3)$ what percentage of the frame contains data?

$0\mathrm{.}4)$ How many seconds does it take to receive all $200$ measurements?

Problem $2$

The system in problem la is oonverted to a paoketized operation in nominal

mode. Paokets are inserted in the fromes, and measurements plus leading

identifiers are placed in the paokets.

nouinal mode frames are sized to $3000$ bits.

Each packet has $10$ bytes of overhead information.

a$)$ bit resolution

a$\mathrm{.}1)$ How many bits wust be used for unique telemetry identifiers?

a$\mathrm{.}2)$ How large must a paoket be to acoomodate all nouinal mode measurements in

one paoket?

a$\mathrm{.}3)$ What peroentage of the frame contains measurement data, on average?

a$\mathrm{.}4)$ How many seconds does it take to downlink one paoket, if the packet starts

at the beginning of the data space of a frame?

b$)$ byte resolution