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3. 2. 7 Connectors, M1740A mmWave Transceiver
3. 2. 7. 1 Ext Trig, LEDs, & Interfaces on M1740A mmWave Transceiver
S9100A 5G Multi-Band Vector Transceiver, Startup Guide
Ext Trig
Connector
SMP (m), 50 Ω, nominal, DC to 40 GHz
Input Level Range
5 V TTL (Trigger signal below 0.8 volts is a "zero"
(low) and anything above +2.4 volts is a "one" (high).
See the descriptions for TRIG 1, 2, 3, and 4 under
Connectors, E7770A CIU Rear Panel, Controller
Card on page 32.
This trigger input (is used by Keysight in testing and
is 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.
LEDs
Trig (LED)
A trigger indicator (used by Keysight in testing; not
needed for customer use). In normal usage
(as described for Ext Trig) the LED does not light.
RF1 (LED)
Indicates the current status of the RF Tx/Rx 1 port,
according to the color scheme:
During switching between modes, intermediate
shades of color occur temporarily.
RF2 (LED)
Indicates the current status of the RF Tx/Rx 2 port,
according to the color scheme described for RF1
above.
Status (LED)
Lights to indicate that the M1740A is currently under
the control of the E7770A, E7760B, or other
instrument, according to the color scheme:
3 Review Hardware Components
Blue = Tx (port is in transmit mode)
Green = Rx (port is in receive mode)
White = Idle (port is not in use)
Orange = connected,
but no active communication currently
Green = connected,
with active communication currently
33
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