AudioQuest M-27 User Manual

Parallel Printers 

 

Check printer manual to set up printer. If switches are changed it may be necessary to reset the 

printer. 

 

Check interconnecting cable to assure it is the proper cable. 

 

Set the internal switches in the M-27 to agree with the printer. It is not necessary to reset the M-27 

if switches are changed. 

 

 

1.  Make sure printer is set up to agree with M-27. 

 

 

2.  Connect printer cable to printer. 

 

 

3.  Turn on printer. 

 

5.  Connect printer cable to M-27. Cable goes toward top of M-27 with red strip in middle of 

unit. 

 

After data is accumulated, a printer is connected to the M-27 and the stored data is printed (see 

Figure 9). The printer may be used while the M-27 is still gathering data to obtain intermediate results. No 
data is lost in either unit until the unit is reset. 

 

All the data may be printed, or only selected data if desired. It is possible to change the printout in 

the middle to obtain, for instance, a 10-minute histogram for part of the time and a 1-minute histogram for 
another. 

 

The M-27 remembers previous PRINT keystrokes and will print only that data unless the 

keystroke has been cleared. 

 

Heading

 

 

A heading is printed when PRINT is pressed. It allows the user to write in identification data (see 

Figure 10).

 

 

Summary 

 

The summary data includes parameter data of how the M-27 is set up and a summary of all the M-

27 functions (see Figure 11). 

 

 

 
Events 

 

The event data is printed for events with data. It includes start time, run time, peak and max levels 

as well as accumulated data for all three dosimeters (see Figure 12).

  

 

 

 
Histograms 

 

Three separate histograms are computed as the data is accumulated with the appropriate exchange 

rate and excluding data less than the threshold. Each minute an integrated average level is computed and 
stored (see Figure 13). 

 

For example, in the following histogram