The MAX110 Bit Manipulation Panel screen offers direct

control of the configuration word and gives a direct

view of the output data word. Note that certain bits of

the control word are used for factory testing and must

be zero; the program prevents these bits from acciden-

tally being set. See Table 8 for a list of commands.

Data Logging

The MAX110 program can store measurements in a file.

Once logging has been enabled, it can be started and

stopped from the Control Panel screen. The numbers

stored in the logging file are signed conversion counts,

which may be converted to voltage values by a simple

calculation.

To enable datalogging, start up the MAX110 program

using the command-line option “-L” to specify the out-

put filename. For example, the command “MAX110

-Lmyfile.dat” creates the file myfile.dat for logging. If

you specify the name of a file that already exists, the

program asks for confirmation before erasing the old

file. An “N” answer exits MAX110 without damaging the

old file. A “Y” answer erases the old file. Once the old

file has been destroyed, it cannot be retrieved.

By default, both channels are polled. To log data from

only one channel, press the “1” or “2” key to turn off the

unused channel. To begin logging data, press the “L”

key. Logging may be suspended and restarted by

pressing “L” again.

The format of the log file is straight ASCII text, with one

reading per channel per line. When only one channel

is enabled, each line contains one reading. When both

channels are enabled, the readings for channel 1 and

channel 2 are separated by a comma. The channel 1

reading is logged first. If both channels are disabled,

no additional data is logged (see Table 9).

The numerical value written to the file is the signed inte-

ger conversion-count read from the MAX110. To con-

vert the conversion count to a voltage, use the following

formula:

Real Voltage = –––––––––––––––––––––––

16384

Note that due to overrange, conversion counts may

extend beyond 16384 to approximately 21000.

MAX110 Evaluation System/Evaluation Kit

_______________________________________________________________________________________

7

KEY

FUNCTION

D

Power-down the MAX110 using settings 1-2.

U

Power-up the MAX110 using settings 4-8.

P

Power-cycle the MAX110 using settings 1-8.

1

Toggle the value of the PD bit used in shutdown mode.

3

Set the sleep time (the length of time the P command

will remain in shutdown mode).

4

Toggle whether a NO OP cycle should be performed

during wake-up.

5

Toggle the value of the PD bit used in active mode.

6

Toggle the value of the PDX bit used in active mode.

7

Toggle whether an AUTO NULL cycle should be per-

formed during wake-up.

8

Toggle whether a GAIN CAL cycle should be per-

formed during wake-up.

L

Enable or disable data logging. This command is

available only if the MAX110 program was started

with the -L command-line option.

C

Return to the Control Panel.

ALT+X Exit the program.

2

Toggle the value of the PDX bit used in shutdown

mode.

KEY

FUNCTION

TAB

Highlight the next bit.

SHIFT+TAB

Highlight the previous bit.

SPACE BAR

Toggle the highlighted bit.

1

Enable or disable polling of input 1.

2

Enable or disable polling of input 2.

C

Enter the Control Panel.

ALT+X

Exit the program.

1. <log file> ::=

{ <record> <return character> }

2. <record> ::=

3. <channel 1 reading> ::= <signed integer>

4. <channel 2 reading> ::= <signed integer>

Table 7. Shutdown Power Cycling Panel

Commands

Table 8. Bit Manipulation Panel Commands

Table 9. Description of Log-File Format

| <channel 1 reading> <comma>

<channel 2 reading>

<channel 1 reading>

| <channel 2 reading>