Bayer HealthCare RapidPoint 400 Series, Service Manual, Page: 72 / 458

72 Rev. C
Analog and Other Output Signals
HCT2_HS Positive signal output of the hematocrit 2 sensor. This sensor
connects to the positive input of the synchronous sampling
differential amplifier on the Contact board. The amplifier
circuitry measures the impedance (conductance) between
the HCT_HF and HCT_LF contacts of the hematocrit 2
sensor.
HCT2_LS Signal reference of the hematocrit 2 sensor. This sensor
connects to the negative input of the synchronous sampling
differential amplifier on the Contact board.
THM_BLK_HI One terminal of the block thermistor.
THM_BLK_LO The other terminal of the block thermistor.
THM_PRE_HI One terminal of the preheater thermistor.
THM_PRE_LO The other terminal of the preheater thermistor.
THM_SMP_HI One terminal of the sample thermistor.
THM_SMP_LO The other terminal of the sample thermistor.
Output Signal Description
PO2_SIG Amplified and buffered p O
2
sensor signal.
LAC_A For future use.
LAC_B For future use.
GLU_A Amplified and buffered glucose (inactive) sensor signal.
GLU_B Amplified and buffered glucose (active) sensor signal.
CRE_A For future use.
CRE_B For future use.
PH_SIG Amplified and buffered pH sensor signal.
HCO3_SIG Amplified and buffered HCO
3
sensor signal.
BUN_SIG For future use.
K_SIG Amplified and buffered K
+
sensor signal.
MG_CL_SIG Amplified and buffered Cl- sensor signal.
NA_SIG Amplified and buffered Na
+
sensor signal.
Amplified and buffered Ca
++
sensor signal.
(Continued)
Input Signal Description