Diagnostics and Utilities
Diagnostics & Tests Menu
Using the LI-6400 21-5
ÒDAC StatusÓ
The DAC Status program presents the state of the 20 D/A convertors on the
LI-6400. Most of the channels are controlled by OPEN, but a 6 are available
for the user. See Analog Output Channels on page 26-23.
DAC Status
PORT mV Use
==== ======== ============
0 1321 Flow Set
1 0.6205 CO2 Set
2 0.6205 Lamp
3 0.6205 (pin 12)
4 1993 Chamber Temp
5 3.4
6 4491 Pump
7 4978 Leaf Fan
8 3.4 Cooling Fan
9 3.4 (pin 27)
10 3.4 (pin 9)
11 2150 LCD Contrast
12 -1093 CO2R_Zero
13 -2108 CO2S_Zero
14 -1405 H2OR_Zero
15 -1834 H2OS_Zero
16 2652 Flow_zero
17 -0.9447 (pin 29)
18 -0.9447 (pin 11)
19 -0.9447 (pin 18)
Figure 21-1. The list produced by the DAC Status program
shows each D/A channel and itÕs current value. The channels
described by
pin nn are available for user use. For range and
resolution information on these spare channels, see Analog
Output Channels on page 26-23. (WhatÕs the story about port
#5? Well, it somehow never made it out to the 37 pin connector,
so is unavailable for use. Our mistake.)
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