Honeywell VRX180 Manuale Utente

Pagina di 294
Programming Function Blocks and Features  
 
Video Recorder – User Manual 
 
153
Table 4-56   Paper Chart Speed Equivalents to Time Base Selections 
Instrument 
Time/Screen 
Paper Chart Vertical Trend 
cm/hour  (inches/hour) 
Paper Chart Horizontal Trend 
cm/hour  (inches/hour) 
5 minutes 
154  (60.6) 246 
 
(96.8) 
15 minutes 
51.3  (20.2) 82 
 
(32.2) 
30 minutes 
25.6  (10.1) 41 
 
(16.2) 
1 hour 
12.8  (5.1) 20.5 
 
(8.1) 
2 hours 
6.9  (2.7) 10.25 
 
(4.0) 
4 hours 
3.4  (1.34) 5.1 
 
(2.0) 
8 hours 
1.6 (0.63) 2.56 
(1.0) 
24 hours 
0.53 (0.21) 0.85 
(0.33) 
7 days 
0.076 (0.03) 0.122 
(0.048) 
31 days 
0.017 (0.007) 0.027 
(0.011) 
 
Set Up Trend 2 - 3 - 4 
See Table 4-55 for prompts.  For Point #1 - Point #12, enter a second group of up to 12 points that will 
be displayed as a horizontal or vertical trend. 
Log scale trending  
This feature enables trending of logarithmic trending on the video chart. This feature is enabled by the following 
rules : 
1.  Programming the decimal point for trend point #1 as X.XXEXX and then trend point #1 and any 
subsequent trend point that also has X.XXEXX as the decimal point will be plotted logarithmically 
with the number of log divisions derived automatically from the low and high limit of point #1. 
2.  Setting up the trend display limits decimal position to be X.XXEXX and then any trend point that 
also has X.XXEXX as its decimal position will be plotted logarithmically with the number of log 
divisions derived automatically from the low and high of the first trend point found with X.XXEXX 
decimal position.