Printer Test
The SRC-1 can be used to test the operation of the N-20P printer and the printer's user-control buttons. When
an SRC-1 is plugged into the DB-9 connector, the N20P does not respond to button presses during POST;
however, it does acknowledge any button press with an immediate beep and the following play codes:
Button Press
Display
measure
gO
battery check
bAt
ON
On
ADV
Ad
D/D
dd
combinations
Err
1. Press the measure button:
"gO" appears in the Oxygen Saturation display.
2. Press the battery-check button:
"bAt" appears in the Oxygen Saturation display.
3. Press the printer ON~ button
"On" appears in the Oxygen Saturation display.
A printer test pattern prints out; the following is an approximate example of the test pattern:
N-20P PRINT TEST
00-00-00 00:00
ABCDEFGHIJKLMNOP
QRSTUVWXYZp2%.*-.
0123456789:#',
()!<>?V
≈√
~
∨∨∨∨∨∨∨∨
= = = = = = = =
Examine the test pattern to verify that all dots print with a uniform darkness. Overall printout darkness can be
adjusted. If printout darkness is either irregular or dots are missing, contact Nellcor's Technical Services
Department or Nellcor's local representative for assistance.
4. Press the printer ADV button:
"Ad" appears in the Oxygen Saturation display. Paper advances
one line for each button press.
5. Press the printer D/D button:
"dd" appears in the Oxygen Saturation display.
6. End SRC-1 printer test
12-27