24 Keysight EXG and MXG X-Series Signal Generators User’s Guide
Models, Options, and Front/Rear Panels for All Models
Rear Panel Overview (N5171B, N5172B, N5181B, & N5182B)
2. EXT 1 & EXT 2
3. LF OUT
4. SWEEP OUT
5. PULSE
6. TRIG 1 & 2
7. REF IN
In its factory default mode, the signal generator can detect a valid reference signal at this
connector and automatically switch from internal to external reference operation. See “Returning
to a Known State with the Preset Key” on page 56. With Option 1ER (flexible reference input), you
must explicitly tell the signal generator the external reference frequency you wish to use; enter the
information through the front panel or over the remote interface.
Connector female BNC Impedance nominally 50 Ω
Signal An externally supplied ±1 V
p
signal that produces the indicated depth.
Damage Levels 5 V
rms
and 10 V
p
Connector female BNC Impedance 50 Ω
Signal Voltage range: 0 to +5 V
p
Offset: -5 V to +5 V, nominal
For more information, see page
137.
Connector female BNC
Can drive 2 kΩ.
Impedance <1 Ω
Signal Voltage range: 0 to +10 V, regardless of sweep width
In swept mode: beginning of sweep = 0 V; end of sweep = +10 V
In CW mode: no output
This is a multiple use connector. For signal routing selections, see pages
63 and 135.
Connector female BNC Impedance nominally 50 Ω
Signal Externally supplied: +1 V = on; 0 V = off
This can also serve as a burst envelope input: 0V = 100% amplitude, –1.00V = 0% amplitude
Damage Levels ≤ −0.3 and ≥+5.3 V
Connector female BNC Impedance high Z
Signal An externally supplied TTL or CMOS signal for triggering operations, such as point to point in
manual sweep mode or an LF sweep in external sweep mode.
Triggering can occur on either the positive or negative edge.
Damage Levels ≤ −0.5 and ≥+5.5 V
Connector female BNC Impedance nominally 50 Ω
Signal An externally supplied −3.5 to +20 dBm signal from a timebase reference that is within ±1 ppm.
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