MOGlabs QRF041, Manual

Page: 20 / 64

8
Chapter 2. Connections and controls
The overall brightness of the display can be set with the
contrast
value in the Options menu. The display also includes a
sleep
timer
that dims the display if it hasn’t received input in a given period of
time. This can be disabled by setting the sleep timer value to 0.
2.3 Rear panel controls and connections
RF 1 RF 2
MOD 1 MOD 2 MOD 3 MOD 4
ON/OFF 1 ON/OFF 2 ON/OFF 3 ON/OFF 4
RF 3 RF 4
REF CLK
80 264 Vac
47 63 Hz
Serial No:
Model:
Made in Australia
Figure 2.5:
QRF rear panel layout.
IEC power in
The QRF is compatible with all standard AC power systems, from 90
to 264 V and 47 to 63 Hz.
Fan
The QRF has five temperature-controlled fans directing air flow over
the RF power amplifiers, exhausting through the rear vent. Ensure
that the vent does not become blocked.
RF
SMA connectors for the primary RF outputs. Nominally connected to
a 50Ω load,
must not be short-circuited
.
MOD
Each channel has an associated SMA analog input, for AM/FM/PM/PID
applications (see chapter 4).
ON/OFF
SMA
digital inputs for controlling the
RF
switch (see
§
4.5), compati-
ble with both 3.3 V and 5 V logic. Also used for external triggering
in table mode.