Keysight PNA Series User Manual

Example measurement time for a PNA network analyzer
PNA with 201 points, 1 GHz span and 10 kHz BW sweep
First, determine if most PNA points are in step or swept mode. If BW ² 1kHz or time/point
> 1mS, all points will be stepped, otherwise it will be swept. In addition, source power cal,
power sweep and frequency offset mode all force step mode.
Data taking: time/point = 1/BW = 1/10 kHz = 100 uSec (Since this is faster than 1 mS,
the PNA is probably in swept mode.)
So, 201 points at 100 uS/point is 20.1 mS
Next, check the sweep rate limit. A 1 GHz span at 600 MHz/mSec = 1.7 mS . So, the
sweep speed is dominated by “time/point” (data taking) not sweep rate.
Therefore, “data taking” = 20.1 mS
Pre-sweep time: 222 uS
Band-crossings: None
Retrace time: 10 to 15 mS
Total measurement time = 20.1 mS + 222 uS + 10 to 15 mS
= 30 to 35 mS (NOMINAL)
Optimizing speed and dynamic range
Some applications require the fastest speed a system can provide, others are concerned
with the best dynamic range available. With the PNA Series network analyzer, users can
adjust their setup according to their specic needs.
Options available to improve sensitivity
Option 014 (Direct receiver access) – Sensitivity improvements
Option H11 (IF MUX access) – Best dynamic range when using external mixers
Other tradeoffs
Reducing the IF BW improves the dynamic range, but reduces the speed. Users must
determine the optimum settings for their applications. For example changing from a
1 kHz IF BW to a 100 Hz IF BW gives a 10 dB improvement in dynamic range, but a 10
times reduction in speed.
35 | Keysight | Antenna Test – Selection Guide

Keysight PNA Series Specifications

General

Number of Ports	2, 4
Impedance	50 Ω
Output Power Range	-55 dBm to +13 dBm (varies by model)
Dimensions	Varies by model
Weight	Varies by model
Power Requirements	100-240 VAC, 50/60 Hz
Storage Temperature	-40°C to 70°C