Extech Instruments 48VTR User Manual page 17

Third Programming Menu Level
Press and hold the SCROLL and RETURN keys simultaneously for 5 seconds to enter
this level from the second programming level. To return to normal operation at any time,
press the RETURN key.
rEmo The rEmo (remote control) parameter, intended for use on the 96VTR, can be
used by the 48VTR to lock out all of parameters. Set to '1' to lock out the
entire controller. Set to '0' for full access.
P-L Parameter Lock. This security feature locks out selected programming levels
or single parameters thereby prohibiting tampering and inadvertent changes.
In the Table below, the user settings are listed on the left and the effect of the
setting on each Menu Level is shown on the right: To lock out the entire
controller, see the 'rEmo' parameter directly above.
Setting Menu 1
0 Displays A1SP* only
1 A1SP and rAmp only
2 A1SP and SPoF only
3 Unlocked (all shown)
4 Displays A1SP only
5 A1SP and rAmp only
6 A1SP and SPoF only
7 Unlocked
8 Displays A1SP only
9 A1SP and rAmp only
10 A1SP and SPoF only
11 Unlocked
12 Displays A1SP only
13 A1SP and rAmp only
14 A1SP and SPoF only
15 Unlocked
* 'A1SP' and 'TIME' in the 1 Menu Level are mutually exclusive. 'A1SP' appears only if the 'A1Fu' parameter in the 3
st
Menu Level is set between 00 and 07 inclusive; 'time' appears only if 'A1Fu' is set between 08 and 11 inclusive.
A1Fu Alarm/Timer Function. Select the desired Alarm or Timer function from the
alarm/timer function list in Appendix 'A'.
A1HY Hysteresis for Alarm. The Setting range is 0.0 to 25.5% of the controller's
'Span'. Hysteresis is used to eliminate relay "chatter" by creating a 'deadband'
region where no relay action can occur. The deadband extends equally above
and below the alarm setpoint. The larger the number set here, the larger the
deadband region.
Note: 'Span' is the meter's region of operation extending from the 'LoLt' (low
limit) to 'HiLt' (high limit). Low and High Limit parameters can be found in the
rd
3 Menu Level.
Menu 2 Menu 3
Unlocked Unlocked
Unlocked Unlocked
Unlocked Unlocked
Unlocked Unlocked
Unlocked Unlocked
Unlocked Unlocked
Unlocked Unlocked
Unlocked Unlocked
Unlocked Only P-L can be changed
Unlocked Only P-L can be changed
Unlocked Only P-L can be changed
Unlocked Only P-L can be changed
Locked Only P-L can be changed
Locked Only P-L can be changed
Locked Only P-L can be changed
Locked Only P-L can be changed
17 Model 48VTR - Version 5.0 – January 2006
Menu 4
Unlock
Unlocked
Unlocked
Unlocked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
rd