APC H15 Service Manual download pdf (Page 21)

User’s and Service Guide 2-5

Getting Started

Performing the Operator’s Check

For information on how to control the test set, refer to Chapter 5,

“Controlling the Test Set and Making Measurements,” on page 5-1.

Description

The following operator’s check is designed to provide you with a high

degree of confidence that your test set is working properly. It is not

designed to verify specifications. To verify specifications, refer to

Chapter 4, “Specifications,” on page 4-1 in this manual.

This procedure is for performing a simple operator’s check using a

network analyzer of the proper frequency range and impedance.

Equipment Required

• Network Analyzer, 50

Ω impedance (Agilent 8753D/E)

• Adapter, APC-7 to type-N (f) (Agilent part number 85056-60001),

quantity 2

• Cable, 50

Ω type-N (Agilent part number 8120-6995 or equivalent),

quantity 2

• Calibration Kit, 50

Ω (Agilent 85032B)

Process

1. Connect the 50

Ω cable to Port 1 of the analyzer.

2. On the analyzer, perform a one-port reflection calibration at the end

of the 50

Ω cable over the frequency range of 300 kHz to 6 GHz.

Verify that the calibration is active and that a cable, terminated

with a short, displays a return loss of 0 ±0.2 dB.

3. Connect the cable (already connected to Port 1 of the analyzer) to the

reflection port of the Agilent 87050A Option H15 test set.

4. Using the network analyzer, measure the return loss of each section

of the test set by selecting ports 1 through 16, one at a time.

Terminate each port being tested with a 50

Ω load (greater than

–30 dB). The resulting return loss should be greater than –12 dB

(the absolute value should be greater than 12).

NOTE This is an 80% confidence test only. A unit could pass this simple test

and yet still not function properly. For more complete testing, refer to

“Performance Testing” on page 6-2.

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 85 86

No comments

APC H15 Service Manual Page 21