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4.18 Transmitter Eco mode
When using alkaline D-Cells in Tx-5 and Tx-10(B)
transmitter models you can extend the effective use of
the batteries by enabling Eco mode.
In Eco mode the power output of the transmitter reduces
when the batteries can no longer provide the required
output power.
When Eco mode is active and the power output has been
reduced, the display alternates between ‘POWER‘ and
the current output power level.
The transmitter will emit three beeps every time the
power is reduced. It will then continue emitting two beeps
each minute whilst it operates at a reduced power level.
To enable or disable Eco mode
1 Press the key to enter the menu
2 Scroll to the BATT menu using the or keys
and enter it by pressing the key.
3 Scroll through the battery options using the or
until ALK is displayed. Press the key.
4 Use the or until ECO is displayed and press
the key to enable Eco Mode.
Or
Select NORM and press the key to disable Eco
mode.
5 Press the key to exit the menu
4.19 Maximum Voltage
On high impedance applications such as small diameter
cables, tracer wires, etc, sometimes it can be difficult to
get a signal to flow when using the direct connection
method. Increasing the output voltage of the transmitter
can maximize the amount of signal coupled onto the
utility.
The transmitter can operate in either low voltage (30V)
or in high voltage (90V). In normal operating mode the
transmitter will operate in low voltage mode.
Warning: When operating the transmitter in high voltage
mode, always make sure that the transmitter is switched off
when connecting or disconnecting direct connection leads.
To set maximum output voltage to 90 volts:
1. Press the key to enter the menu
2. Scroll to the MAXV menu using the or keys
3. Press the key to enter the MAXV menu
4. Set the MAXV to HIGH using the or keys
5. Press the key to accept your changes and exit
the MAXV menu
6. Press the key to exit the menu
When in high voltage mode the transmitter will display a
high voltage warning triangle.
Each time the transmitter is switched off the transmitter
will revert back to the default low voltage setting.
4.20 Measure mode
The transmitter has the capability of providing
impedance measurements by determining the resultant
impedance across the crocodile clips of the Direct
Connection lead while connected to the utility. These
measurements can be useful when assessing sheath
fault severity. It is also possible to measure potential
voltage that may be present on utilities to warn of
potentially dangerous or harmful voltages present.
In measure mode the measurement is derived from an
AC signal applied to the utility from the transmitter
Impedance & voltage measurements
1. Connect the Direct Connection leads to the utility
and switch on the transmitter.
2. Hold down the key until MEAS is displayed and
the measuring icon is activated.
The transmitter display will now indicate the voltage
level measured across the connection leads.
3. Press the key once and the display will indicate
the impedance measured across the connection
leads.
The measurement icon will display the following
symbols:
Figure 4.13 Impedance and voltage measurements
4. To exit MEAS mode hold down the key until the
display reverts back to the normal operating screen.
Impedance measurements using active
frequency
1. Connect the Direct Connection lead to the utility and
switch on the transmitter.
2. Select the preferred frequency and output the signal.
3. Press the key once and the display will indicate
the impedance measured across the connection
leads and also the output power of the transmitter.
4. Press the key once to return to the normal
operating screen.
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