Getting Started Guide 21
Exterior Features
DUT-Facing Side
Figure 3-3
M1740A interface features
The features are described in the following table.
Number
Name
Description
1
Ext Trig
(connector)
A trigger input (used by Keysight in testing; usually not needed for customer use).
In normal usage, the trigger input is included in the combined input signal to the
LO/Pwr/Ctrl/IF In
port.
2
Trig
(LED)
A trigger indicator (used by Keysight in testing; not needed for customer use). In
normal usage (as described above for
Ext Trig
) the LED does not light.
3
RF1
(LED)
Indicates the current status of the
RF Tx/Rx 1
port, according to the color
scheme:
— Blue = Tx (port is in transmit mode)
— Green = Rx (port is in receive mode)
— White = Idle (port is not in use)
During switching between modes, intermediate shades of color occur
temporarily.
4
RF2
(LED)
Indicates the current status of the
RF Tx/Rx 2
port, according to the color
scheme described for
RF1
above.
5
Status
(LED)
Lights to indicate that the M1740A is currently under the control of the E7760B or
other instrument, according to the color scheme:
— Orange = connected, but no active communication currently
— Green = connected, with active communication currently
6
USB
(connector)
A control input (used by Keysight in testing; not needed for customer use).
7
Aux
(connector)
A power input (used by Keysight in testing; not needed for customer use).