Electronics International SR-8A - Manual (Page 7)

Features
5
Operating Instructions
1) Any EGT or TIT channel exceeds 1650’F.
2) Any CHT channel exceeds 500’F.
3) Any EGT or TIT channel drops below 1100’F.
4) As an EGT analyzer (when first 4-6 channels on the SR-8A are used to measure EGT's): Any time
the EGT spread between cylinders exceeds 95’F for a fuel-injected engine (195’F for a carbureted
engine). Also, a “DC” (Differential Condition) indicator will appear in the display.
5) As a CHT analyzer (when first 4-6 channels on the SR-8A are used to measure CHT's): Any time
the CHT spread between cylinders exceeds 95’F (may be programmed to 195’F). Also, a “DC”
(Differential Condition) indicator will appeart in the display.
The Smart Analyzer will stop on the first channel on which it finds a problem and light the “Temp Prob”
warning light. If the problem corrects itself, the “Temp Prob” warning light will go out and the Smart
Analyzer will continue its scan. If the problem is a Differential Condition, the Smart Analyzer will stop on
the coldest cylinder. In this case, the problem may be the coldest cylinder or it may be the hottest cylinder.
By comparing temperatures with adjacent cylinders the problem cylinder will become apparent. To quickly
find the hottest cylinder of the analyzer channels, press the “PEAK” botton on the front panel.
5. “DC” Differential Condition Indicator:
In the Scan Mode, any time there is a temperature spread between any analyzer channel that exceeds the set
limit, the Smart Analyzer will stop the scan, light the “Temp Prob” warning light and a “DC” will appear in
the top left corner of the display. This “DC” indicator will allow you to distinguish a differential problem
from any other type of problem.
6. Scan Rate Adjustment:
The Scan Rate may be adjusted to suit you (2 to 10 seconds per channel). Using a small, flat tip screwdriver,
rotate this adjustment clockwise to increase the time the Smart Analyzer displays each channel. Be careful
not to damage this adjustment. Exert only a light force against the pot when making an adjustment.
7. Peak Locate Button:
The Peak Locate button may be used in the Manual or Scan Mode of operation. Its purpose is to eliminate all
of the mental calculations and time ordinarily required to find the hottest cylinder of the analyzer channels.
This can be a real asset in leaning or locating a possible problem.
A) Manual Mode - To find the hottest analyzer cylinder in the Manual Mode, press the “Peak”
button. The Smart Analyzer will automatically switch to Channel One and start a fast scan (one
second per channel). It will scan through all the channels, and on the second pass it will stop on the
hottest analyzer channel. If during the fast scan the “Temp Prob” warning light flashes, the Smart