GAI-Tronics 12389-001 NOVA PA/GA Systems S.M.A.R.T. Modules - Manual (Page 10)

Pub. 42004-674L2H
NOVA P UBLIC A DDRESS S YSTEMS - S.M.A.R.T. M ODULES P AGE 8 of 24
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Set Up
1. Enter the Program mode by inserting a shorting clip across the program mode jumper (JU1).
2. Select Active Speaker or Zone Lines: Select one of the lines on the rotary line-select switch, S1
using a small flat-bladed screwdriver. Positions 0 through 7 refer to lines or channels 1 through 8,
respectively.
3. Press the STEP button momentarily, causing the current generator to step to the next value (in
circular fashion) and to display the current value on one of the following fault-descriptive LED
settings:
 No LED = 0 mA
(The selected speaker line is considered inactive. Set all unconnected lines to 0 to prevent the
reporting of erroneous fault conditions. No tests will be performed on these lines.)
 SHORT LED = 10 mA
 OPEN LED = 20 mA
 LEAK LED = 30 mA
N
OTE : When JU6, a current-doubling jumper is installed, the current values are approximately
doubled to 20 mA, 40 mA, and 60 mA for the three active index values.
4. Select a current value that will result in a displayed voltage value near mid-range. A stored value too
high or too low may result in the calculated limits exceeding the design limits.
Press the STORE button momentarily to begin the measurement cycle. During this time, the three
fault LEDs flash sequentially, and then count down in binary. The resultant 8-bit voltage value is
displayed in binary format on the eight line-unique alarm LEDs (and corresponding output closures).
N
OTE : Line 1 Alarm is LSB and Line 8 Alarm is MSB.
5. Set Mean Voltage and Line Testing Limits: Press the STORE button continuously for more than 3
seconds to store the selected current value and the measured result in NVRAM for the line that is
currently selected using the rotary switch. The measured result is used as the mean value and faults
are calculated as deviations greater than +\−20% of the stored value. The three fault-descriptive
LEDs will flash three times to indicate that the value has been stored.