Instrument Functions; Use Of Receiver Ht38R - HT HT38 Manuel D'utilisation

5 INSTRUMENT FUNCTIONS

Instrument HT38 consists of a Transmitter and a Receiver unit. The transmitter produces a
signal which propagates through the circuit to be measured. The receiver detects the
presence of this signal when correctly oriented, thus searching for the electric component
to be detected. The receiver sounds with a variable tone which increases when the
detected signal becomes stronger; a green LED turns on.
Use the instrument on a live closed circuit in order to guarantee the
propagation of the signal generated by the transmitter.
5.1 USE OF TRANSMITTER HT38T
Transmitter HT38T is not provided with any ON/OFF button and propagation of the
generated signal activates automatically after connecting it to the electric mains of the
circuit to be tested (typically a live socket). The "ON" LED turns on to indicate that the
transmitter operates correctly.
 The transmitted signal does not influence the sensitivity of electronic
devices on the circuit to be tested.
 In a closed circuit, since the transmitter generates a small load current, its
signal can be detected upstream through the feeder panel and the
distribution transformer. The strength of the signal is reduced as it passes
through the transformer in inverse proportion to the turns ratio of the
transformer.
 The transmitter can be used in circuits protected by an RCD.

5.2 USE OF RECEIVER HT38R

The receiver is provided with a
 Switching on  Press the
Fig. 1 – part 2) turns on and the buzzer sounds intermittently at regular intervals to
indicate that the unit is searching for the transmitter's signal (scanning).
 Reset  With the receiver switched on, press the
condition, each scanning function in progress is zeroed. The red LED (see Fig. 1 – part
2) turns on and the buzzer sounds intermittently at regular intervals. Always use this
function while keeping the receiver distant from the electric source to be tested, so that
the signal generated by the transmitter is not detected.
 Switching off  Press and hold the
In order to preserve the internal battery, the receiver is provided with an auto
power off function after approx. 3 minutes' idling.
CAUTION
CAUTION
/Reset button with the following modes:
/Reset key to switch on the receiver. The red LED (see
/Reset key to switch off the receiver.
CAUTION
EN - 5
/Reset key to reset the unit. In this
HT38