Keysight M8195A - Status LED; DATA out LED

1 Introduction
22 Keysight M8195A Revision 2 – Arbitrary Waveform Generator User’s Guide
1.4.1 Status LED
Following LEDs are available at the front panel to indicate the status of the AWG
module:
The green ‘Access’ LED:
It indicates that the controlling PC exchanges data with the AWG module.
The red ‘Fail’ LED has following functionality:
It is ‘ON’ for about 30 seconds after powering the AXIe chassis.
After about 30 seconds the LED is switched ‘OFF’. If an external PC is used to control
the AXIe chassis, this PC can be powered after this LED has switched OFF.
During normal operation of the module this LED is ‘OFF’. In case of an error condition
such as e.g. a self-test error, the LED is switched ‘ON’.
1.4.2 DATA Out LED
Table 4: Data out LED
Color
Meaning
Description
Off
Output disabled
Represents the state ‘Disable’. Selectable from SFP or SCPI. The
output amplifier is not powered
After Power-On the LED is off.
After successful initialization of the M8195A, the LED turns to its
default state which is OFF.
ON, green
Output enabled
Represents the state ‘Enable’. Selectable from SFP or SCPI
 Output amplitude is equal to the adjusted amplitude
 Offset is equal to the adjusted amplitude
 External Termination voltage is equal to the adjusted
termination voltage
On, red
Protection circuit
active
Error condition such as
 The externally applied termination voltage significantly
differs from the adjusted termination voltage
 External termination resistor significantly differs from 50
Ohm
The protection circuit overwrites amplifier settings (amplitude, offset)
such that the amplifier’s output stage will not be destroyed =>
Amplifier is not powered
User interaction is required to remove the externally applied error
condition. After removal, the user must actively enable the output
again.
The DATA Output LED does not represent the RUN / Stop Status. Also, the Output
LED does not indicate whether a valid pattern is loaded in a certain channel.