Keysight N9038A, Service Manual, Page: 656 / 745

Keysight N9038A MXE Service Guide 675
Tests
Frequency Readout Accuracy
Frequency Readout Accuracy
Test Limits
Frequency Readout Accuracy is equivalent to the following equation:
See Table 22-6 for actual limits used.
Overview
The frequency readout accuracy is measured in several spans and center
frequencies that allow both internal receiver synthesizer modes and prefilter
bandwidths to be tested. Frequency reference error is eliminated by using the
same frequency standard for the receiver and signal source.
This measurement is performed on RF Input 1 only.
0.25
% span
5
% RBW
2
Hz
0.5
horizontal resolution
×
+ +
×
+
× ( ) ±
Table 22-5 Frequency Readout Accuracy - Required Equipment
Item
Critical Specification
(for this test)
Recommended
Keysight Model
Adapter
Type-N (m) to 3.5 mm (f)
Frequency: 10 MHz to 1.51 GHz
VSWR: < 1.1:1 1250-1744
Adapter
a
3.5 mm (f) to 3.5 mm (f)
Frequency: 10 MHz to 1.51 GHz
VSWR: < 1.1:1 83059B
Cable, 1 meter
3.5 mm (m) to 3.5 mm (m)
Frequency: 10 MHz to 1.51 GHz
VSWR: < 1.4:1 11500E
Cable, 120 cm
BNC (m) to BNC (m)
Frequency: 10 MHz 10503A
Signal Generator Frequency: 10 MHz to 1.51 GHz PSG
Adapter
b
2.4 mm (f) to 3.5 mm (f)
Frequency: 10 MHz to 1.51 GHz
VSWR: < 1.4:1
11901B
a. Quantity of 2 required for Option C35 (3.5 mm RF Input 1)
b. Required for Option 544 (44 GHz Frequency Range)