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BASIC OPERATION
All operations of the M-600 are controlled via the front panel buttons.
Meter Mode Selection
Pressing the Meter button repeatedly cycles the M-600 through three display modes:
Forward power, Reflected power, and SWR. Forward and reflected power are both displayed on
the upper Watts scale, and SWR is shown on the lower scale.
Peak/Average Reading Selection
The M-600 meter can display either average power or peak forward power, in watts. Average
mode is suitable for 100% duty cycle modes such as FM, RTTY, or PSK. Peak mode is more
useful on modes with varying duty cycle such as SSB or AM. The factory default is average
mode. Peak SWR values are also displayed, when the meter mode is set to SWR and Peak is
selected.
Press the Peak button to toggle between Peak Hold and Average modes. In Peak Hold mode,
the highest value reported will be held on the meter for a moment.
Meter Scale Selection
The M-600 can display zero to 600 watts on its forward and reflected power scale, or, for
better detail of lower power readings, a zero to 100 watt scale can be selected. Press the Scale
button to toggle between the 100W and the 600W scales.
Dual Watch Capability
Because the reading that is selected for display on the M-600 meter is independent of the
meter quantity being shown on the AT-600ProII's built-in bargraph display, it is possible to
watch more than one parameter at once. For example, the M-600 can be set to display peak
forward power, while the AT-600ProII is displaying average power. Because the AT-600ProII
has two LED bargraphs, it is possible to watch FWD power and SWR on the AT-600ProII's
bargraphs, while watching reflected power on the M-600, so all three can be viewed
simultaneously!
REMOTE CONTROL OF AT-600PROII
While not directly supported by LDG Electronics, it is possible to use the Ext. Meter jack on
the AT-600ProII to remotely control the AT-600ProII. See the document LDG AT-600ProII
External Meter Serial Communications Protocol Specification on the LDG website for details.
CARE AND MAINTENANCE
The M-600 tuner is essentially maintenance-free. The outer case may be cleaned as needed
with a soft cloth slightly dampened with household cleaning solution. As with any modern
electronic device, the M-600 can be damaged by temperature extremes, water, impact, or static
discharge. LDG strongly recommends the use of a good quality, properly installed lightning
arrestor in the antenna lead.
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