HP 8560E Service Manual page 56

Table 2-2 Adjustable Components
Reference Adjustment
Designator Name
A5L702 LC CTR 4
A5R343 15 DB ATT
A5T200 XTAL CTR 1
A5T202 XTAL CTR 2
A5T500 XTAL CTR 3
A5T502 XTAL CTR 4
A6R410 HV ADJ
−10 dB ADJ
A10R13
A10R18 0 dB ADJ
A10C3 TRK OSC CTR
A14R42 6.01 GHz
A14R76 FM SPAN
A14R93 3.2 GHz
A15C100 SMPL MATCH 1 6
A15C210 VCO RANGE
A15C629 298 MHz ADJ
A15U302 10 MHz ADJ
A15R561 CAL AMPTD
A15R926 EXT BIAS ZERO 14
A17R4 Z GAIN
A17R11 CUTOFF
A17R21 Z FOCUS
Chapter 2
Adjustment Description
Number
3 Adjusts center frequency of fourth stage of LC bandwidth
filter to 10.7 MHz.
4 Adjusts the attenuation of the Reference 15 dB
attenuator for 15 dB between minimum
and maximum attenuation.
3 Adjusts center frequency of first stage of crystal
bandwidth filter to 10.7 MHz.
3 Adjusts center frequency of second stage of crystal
bandwidth filter to 10.7 MHz.
3 Adjusts center frequency of third stage of crystal
bandwidth filter to 10.7 MHz.
3 Adjusts center frequency of fourth stage of crystal
bandwidth filter to 10.7 MHz.
1 Adjusts the voltage between A6TP405 and A6TP401 to
the voltage marked on the A6A1
High Voltage Module.
9 Offsets power level range of A10 Tracking
Generator.
9 Adjusts gain of power level range of A10
Tracking Generator.
20 Centers range of the A10 Tracking Generator
tracking oscillator.
7 Adjusts the main coil tune driver current at a
YTO frequency of 6.01 GHz (near the upper YTO
frequency limit)
7 Adjusts the FM span accuracy by affecting the sensitivity
of the FM coil driver.
7 Adjusts the main coil fixed driver current at a
YTO frequency of 3.2 GHz (near the lower
YTO frequency limit).
Transforms the sampler input impedance to 50 ohms over
the 280 to 298 MHz range
6 Adjusts the VCO tank capacitance so that 21 V on the
VCO tune line equals 298 MHz
VCO frequency.
17 Fine adjusts the 298 MHz SIG ID Oscillator (Opt. 008)
frequency to optimize its performance.
12 Adjusts frequency of the temperature
compensated crystal oscillator (TCXO) to 10 MHz.
11 Adjusts amplitude of the 300 MHz calibrator signal to
−10.0 dBm.
Adjusts zero bias point of external mixer bias.
2 Adjusts maximum intensity.
2 Adjusts intensity to turn off blanked lines.
2 Adjusts focus for lines of different brightness.
Adjustment Procedures
Introduction
55