Eaton Spyder 738r Manuel D'installation page 9

Commissioning
The 738r has several different operating modes. To select the required mode you must
place the jumpers as follows:
Jumper Function
A Sensitivity Range Selection
Jumper A selects the high or low sensitivity range. Fit the jumper to select the low
sensitivity range. Remove the jumper to select the high sensitivity range. The on-
board potentiometer VR1 allows you to adjust the sensitivity within each range.
B Sustain Mode
When removed, jumper B selects Sustain mode. This mode improves the ability of
the 738r to discriminate between alarm events and non-alarm shocks (for example
bird strikes or heavy background noise from busy roads or nearby railways).
C Calibration Mode
Fit jumper C in order to adjust the sensitivity or confirm correct operation. Remove
jumper C to put the 738r into normal operation. Note that the 738r can only enter
calibration mode when the lid tamper switch is open. (See "To Commission the
738r" below.)
D Discrete
Fit jumper D to disable the Activity LED. Remove jumper D to enable the Activity
LED.
Note: When delivered from the factory the jumpers are fitted as follows: A: Removed (high
sensitivity), B: Fitted (no sustain), C: Removed (normal operation), D: Removed (Activity
LED enabled).
9
EN