54 Chapter2
Adjustment Procedures
Introduction
Frequency Response Adjustment 10
A15U100 Sampler Sampling Oscillator Adjustment 6
A17 CRT Driver Display Adjustment (8560E only) 2
A18V1 CRT Display Adjustment (8560E only) 2
A19 HP-IB No related adjustment
A21 OCXO 10 MHz Reference Adjustment (OCXO) 17
Table 2-2 Adjustable Components
Reference
Designator
Adjustment
Name
Adjustment
Number
Description
A2R152 16 MHz PLL ADJ 19 Adjusts the free-running frequency of the
16 MHz CPU clock.
A2R206 DGTL X GAIN 2 Adjusts the horizontal gain in the X line generator.
A2R209 SWEEP OFFSET 2 Adjusts the beginning of the trace to the leftmost vertical
graticule line in fast-analog, zero-span mode.
A2R215 DGTL Y GAIN 2 Adjusts the vertical gain in the Y line generator.
A2R218 VIDEO OFFSET 2 Adjusts the vertical position in fast-analog, zero-span to
match the digital zero-span input.
A2R262 STOP BLANK 2 Adjusts the blanking at the end of a vector on the display.
A2R263 START BLANK 2 Adjusts the blanking at the start of a vector on the
display.
A2R268 VIDEO GAIN 2 Adjusts the vertical gain in fast-analog, zero- span to
match with the digital zero-span input
A2R271 SWEEP GAIN 2 Adjusts the end of the trace to the rightmost
vertical-graticule line in fast-analog,
zero-span mode.
A4C707 FM DEMOD 13 Adjusts the FM demodulation for a peak response.
A4R445 LIMITER
PHASE
5 Adjusts Limiter Phase for peak response
A4R531 LOG AMP TOS 5 Minimizes Log error near Top of Screen.
A4R544 LIN FIDELITY
BOW
5 Minimizes Linearity Fidelity error.
A4R826 CAL OSC
AMPTD
4 Sets calibration oscillator output power.
(nominally −35 dBm). This power is injected into the IF
during the AUTO IF ADJUST routines.
A5L300 LC CTR 1 3 Adjusts center frequency of first stage of LC
bandwidth filter to 10.7 MHz.
A5L301 LC CTR 2 3 Adjusts centerfrequency ofsecond stageof LC bandwidth
filter to 10.7 MHz.
A5L700 LC CTR 3 3 Adjusts center frequency of third stage of LC
bandwidth filter to 10.7 MHz.
Table 2-1 Related Adjustments
Assembly
Changed or
Repaired
Perform the Following Related Adjustments in the
Order Listed
Adjustment
Number
To Next Page
Loading...
