new complex for --bin

rfg_adc_plotter/io/sweep_parser_core.py

@@ -33,8 +33,10 @@ def log_pair_to_sweep(avg_1: int, avg_2: int) -> float:
 
 
 def tty_ch_pair_to_sweep(ch_1: int, ch_2: int) -> float:
-    """Reduce a raw CH1/CH2 TTY point to a single sweep value."""
-    return float(abs(int(ch_1) - int(ch_2)))
+    """Reduce a raw CH1/CH2 TTY point to power-like scalar ``ch1^2 + ch2^2``."""
+    ch_1_i = int(ch_1)
+    ch_2_i = int(ch_2)
+    return float((ch_1_i * ch_1_i) + (ch_2_i * ch_2_i))
 
 
 class AsciiSweepParser: