Heath Consultants Hi Flow Sampler - Manual (Page 43)

Hi Flow

Sampler Calibration
Instruction 0055-9017 43
3.5 Calibration Amplifier Gain Check
Use this procedure to display the gain values of the calibration amplifier circuits in
hexadecimal. This procedure is useful to service technicians for troubleshooting
purposes.
1. From the Main Screen select Menu > Calibration > Calibration Gains to display the
Calibration Gains Screen.
Where: #### is the gain value in hexadecimal. Hexadecimal (or “hex”) is like
decimal, except:
• hex uses the 16 hex digits 0-9 and A-F (vs. using only the 10 digits 0-9 in
decimal notation), and
• each position in a hex number is an exponent of 16 (16 0 =1’s place,
16 1 =16’s place, 16 2 =256’s place, etc.) rather than an exponent of 10 as in
decimal (i.e., 10 0 =1’s place, 10 1 =10’s place, 10 2 =100’s place, etc.).
For example, a gain value of 298 decimal (or base 10) equals 012A hex (or base
16).
2. Press ESC three times to return to the Main Screen.
3.6 Erase Calibration Procedure
The following procedure resets the gain of each calibration amplifier circuit to the
factory default hexadecimal value of “FFFF”.
1. From the Main Screen select Menu > Calibration > Erase Calibration to display the
Erase Calibration Screen.
2. Select Yes to erase the calibration values. Observe that the message “Erasing
Calibration” appears at the bottom of the screen. Select No to abort this procedure
and return to the Calibration Menu Screen.
3. Press ESC twice to return to the Main Screen.
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