Service manual

Model 5304A
Maintenance
PERIOD AVERAGE A MODE
5304A Controls:
Channel A, SEP, XI, AC, +, PSET, PER AVG A.
INPUT:
651B set to 1 kHz, 100 mV rms/5012.
Oscilloscope:
HP 180A, 1801A Vert Amp, 1821A T.B. through
a 10:1 probe.
Settings:
AC coupled (except as noted).
NORM sweep mode.
+ slope (except as noted).
Channel A.
5300A
SAMPLE RATE ccw out of OFF (except as
noted). 5300 Display should be approximately
1.00000 MS, C.
HP 10525A Logic Probe
Test points using
H = High (lamp on)
L = Low (lamp off)
TPl H (dim). Flash rate decreases when 5300 SAMPLE
RATE is turned cw. Goes Low when RESET is
pressed.
TP2 H (dim). Flash rate decreases when 5300 SAMPLE
RATE is turned cw. Goes Ix>w when RESET is
pressed.
TP3 H (dim). Flash rate decreases when 5300 SAMPLE
RATE is turned cw. Goes High (bright) when
RESET is pressed.
TP4 H (dim). Flash rate decreases when 5300 SAMPLE
RATE is turned cw. Goes High (bright) when
RESET is pressed.
TPS L. Goes High when RESET is pressed.
TP6 H
TP7 H
9D-5-6