HP 8517B Troubleshooting Procedures, A15 Primary Regulator, Board Assembly, A27 Post-RegulatorBoard, (Option 007, Only)

Troubleshooting the Test Set

Troubleshooting Procedures

Troubleshooting Procedures

The troubleshooting procedures in this chapter are listed below:

•“A15 Primary Regulator Board Assembly” on page 5-7

•“A27 Post-Regulator Board Assembly” on page 5-7

•“Self-Test Indicators” on page 5-9

•“HP 85102 IF Amplifier Test” on page 5-12

•“Unratioed Power Test” on page 5-14

•“HP 8517B, Option 007 Unratioed Power Test” on page 5-20

•“Finding the Faulty Assembly” on page 5-23

A15 Primary Regulator Use a digital voltmeter to check the voltages and an oscilloscope to check for Board Assembly a maximum ripple level as listed in Table 5-2.

Table 5-2 Power Supply Voltages to A15

Nominal Voltage	Test Point	Voltage Range	Maximum Ripple
			Peak-to-Peak
+5.05 Vdc	A15TP1	+4.75 to +5.25	2 mv
–5.20 Vdc	A15TP2	–4.90 to –5.50	2 mv
+14.85 Vdc	A15TP3	+14.10 to +15.60	2 mv
–14.85 Vdc	A15TP6	–14.10 to –15.60	2 mv

A27 Post-Regulator Board	(Option 007, Only) Use a digital voltmeter to check the voltages and an
Assembly	oscilloscope to check for a maximum ripple level as listed in Table 5-3.
Table 5-3 Power Supply Voltages to A27
	Nominal Voltage	Test Point	Voltage Range	Maximum Ripple
				Peak-to-Peak
	+5.0 Vdc	A27TP1	+4.75 to +5.25	2 mv
	–3.50 Vdc	A27TP2	–3.26 to –3.75	2 mv

HP 8517B S-Parameter Test Set Manual 5-7