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--- techtalk:ref:engctl50 [2020/01/11 23:46]
ixl2relax [A Few Comments From XLForum Members]
+++ techtalk:ref:engctl50 [2021/07/23 00:49]
ixl2relax [Table Data Files - '.tbl']
@@ Line 29: / Line 29: @@
 In addition to the pre-programmed timing maps (selectable by the dials), the unit can be user-programmed to utilize customized timing advance maps instead of the pre-programmed maps. To use these customized maps, you must have a computer interface, such as the Daytona USB Interface (18014), and the Daytona PC-Link Software, to communicate with the TC88A module. (See the extra links below.)\\
+Screen Shots of the PC Link Software:
+{{:techtalk:ref:engctl:tc88a-pclink-mainscreen-mapopened.jpg?300|}}{{:techtalk:ref:engctl:tc88a-pclink-make-modify-tables.jpg?300|}}{{:techtalk:ref:engctl:tc88a-pclink-ul-dl-eeprom-switches.jpg?300|}}
 The TC88A map table will allow setting the spark timing for MAP conditions from 16 to 30 InHg using 2 InHg increments. Note that 30 InHg manifold pressure represents wide open throttle (WOT) and 16 InHg represents deceleration or idle conditions.
@@ Line 34: / Line 38: @@
 There's a rough correlation of the throttle position to certain areas of the map image. Also remember that the CV carb responds to throttle changes with changes in the slide (which is a variable venturi) - It is the combination of the two that creates the change in pressure. The general relationship is illustrated below:
 {{:techtalk:ref:engctl:tc88a-mapimage-throttleareas.jpg?600|}}
 \\
@@ Line 95: / Line 99: @@
 {{:techtalk:ref:engctl:tc88a-maptable-sample-jester_delta-t.jpg?800|}}
-Note that the module makes some modifications to the uploaded and stored timing data (perhaps due to interpolation for MAP values). This fact suggests that one might want to have a base TBL file that is modified as needed and used for a direct upload to the module (rather than downloading a previously uploaded file, which was changed by the module, then making your intended modifications to it and re-uploading it). Perhaps trying both methods will produce the desired results.
+Below is the 3D Map that the TC88A PC-Link Software produces for the 'Jester Delta' table data. Please note that this type image view (because it is an angled view of 3D information) distorts the advance values at higher MAP levels (near 30 InHg). The image makes those advance values appear less than their actual values. So refer to the table data for a more accurate perception of the programmed advance value at the higher MAP levels.
+'Jester Delta' represented by a 3D image:\\
+{{:techtalk:ref:engctl:tc88a-rico-maps:jester_delta:jester_delta-m.jpg?800|}}
@@ Line 101: / Line 109: @@
 ==== Module Parameters ====
-{{ :techtalk:ref:engctl:tc88a-pc-link-options-box.jpg?300|}}
+{{ techtalk:ref:engctl:tc88a-pc-link-options-parametersbox.jpg?300|}}
 The module parameters (which are saved in the map TBL file) can be altered in the PC-Link software under OPTIONS. Be sure to carefully set these parameters BEFORE UPLOADING your customized map to the module and before saving your map for future use. AFTER the TBL information is uploaded to the module, these settings will be effective on the module.
@@ Line 115: / Line 123: @@
 **FixedInitialTmgFlag:**\\
 **InitialTiming:**\\
-If the Fixed Initial Timing box is checked, the FixedInitialTmgFlag is set TRUE and only then can you modify the Initial Timing Slider (ITS). Selecting 0 on the ITS is equivalent to selecting 5. In either case, the map data is utilized exactly as programed in the table. Whatever value you select on the ITS, it will be uploaded to the module as part of the TBL data.
+If the Fixed Initial Timing box is checked, the FixedInitialTmgFlag is set TRUE and only then can you modify the Initial Timing Slider (ITS).\\
+The ITS setting is a way to universally alter (increase or decrease) the advance timing values of the entire map without actually changing each individual value.
-However, if you select 4, 3, 2 or 1 on the ITS, the map timing values will be reduced by 1° for each number lower than 5. Selecting 4 = -1° across every table value (3=-2°, 2=-3°, 1=-4°). Likewise, if you select a value of 6, 7, 8 or 9 on the ITS, the map timing values will be increased by 1° for each number higher than 5. Selecting 6 = +1° across every table value (7=+2°, 8=+3°, 9=+4°).
+| Selecting 0 on the ITS is equivalent to selecting 5. In either case, the map data is utilized exactly as programmed in the table.\\ Whatever value you select on the ITS will be uploaded to the module as part of the TBL data. ||
+| ||
+| If you select 4, 3, 2 or 1 on the ITS, the map timing values\\ will be reduced by 1° for each ITS value lower than 5. | If you select a value of 6, 7, 8 or 9 on the ITS, the map timing values\\ will be increased by 1° for each ITS value higher than 5. |
+| Selecting ITS Value of:\\ .. 4 = -1° of advance across every table value.\\ .. 3 = -2° of advance across every table value.\\ .. 2 = -3° of advance across every table value.\\ .. 1 = -4° of advance across every table value. | Selecting ITS Value of:\\ .. 6 = +1° of advance across every table value.\\ .. 7 = +2° of advance across every table value.\\ .. 8 = +3° of advance across every table value.\\ .. 9 = +4° of advance across every table value. |
 When the FixedInitialTmgFlag is TRUE, this selection will DISABLE the __INITIAL TIMING DIAL__ on the module since that value is now fixed in the software.
@@ Line 130: / Line 142: @@
 **FixedLimFlag:**\\
 **RPMLimit:**\\
-If the Fixed RPM Limit box is checked, the FixedLimFlag is set TRUE and only then can you modify the RPM Limit Slider (RLS). The RLS is set to a RPM value as appropriate to your engine configuration (kept low for break-in periods). The slider will adjust from a low of 3000 RPMs to a high setting of 9900 RPMs. The module parameter in the TBL file (RMPLimit) will reflect the value chosen on the RLS.
+If the Fixed RPM Limit box is checked, the FixedLimFlag is set TRUE and only then can you modify the RPM Limit Slider (RLS). The RLS is set to a RPM value as appropriate to your engine configuration (kept low for break-in periods). The slider will adjust from a low of 3000 RPMs to a high setting of 9900 RPMs. The module parameter in the TBL file (RPMLimit) will reflect the value chosen on the RLS.
 When FixedLimFlag is TRUE, this selection will DISABLE the __RPM LIMIT DIALS__ on the module since that value is now fixed in the software.
@@ Line 146: / Line 158: @@
 **TachEnableFlag:**\\
-If the Enable Tach Output box is checked, the TachEnableFlag will be SET TRUE. This setting will generate a 12v square wave on pin2 matching the RPM of the engine. This signal will be usable by most discrete signal tachometers (like those that connect off of the ignition coil). If this setting is utilized, the Real-time Data Display in the TC88A logging software will not function.
+If the Enable Tach Output box is checked, the TachEnableFlag will be SET TRUE. This setting will generate a 12v square wave on pin2 matching the RPM of the engine. This signal will be usable by most discrete signal tachometers (like those that connect off of the ignition coil). The output signal is one pulse per revolution. If this setting is utilized, the Real-time Data Display in the TC88A logging software will not function.
 If the Enable Tach Output box is unchecked, the TachEnableFlag will be SET FALSE.

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