Service manual

Modei 5304A
Maintenance
OPEN/CLOSE MODE
5304A Controls:
Channel A, SEP, XI, DC, +, PSET
OPEN/CLOSE A. Press RESET, then
OPEN/CLOSE; display should be ac-
cumulating at a 10 Hz rate.
INPUT:
651B set to 10 Hz, 100 mV rms/50<2.
Oscilloscope:
HP 180A, HP 1801A Vert Amp, HP 1821A T.B.
through a 10:1 probe.
Settings:
AC coupled (except as noted).
NORM sweep mode.
+ slope (except as noted)
AC (except as noted)
Channel A
5300A Sample Rate ccw out of OFF (except
as noted).
5304A: OPEN/CLOSE Mode
TPl H. Goes Low when OPEN/CLOSE switch is
pressed. Reamains Ix>w if this switch is
held depressed.
TP2 L. Goes High when RESET is pressed. Re-
mains High if this switch is held depressed.
TP3 L
TP4 L. Goes High when OPEN/CLOSE is pressed
to stop accumulation or when RESET is
pressed during accumulation.
TP5 H. Goes Ix)w when OPEN/CLOSE is pressed
to stop accumulation or when RESET is
pressed during accumulation.
9D-5-12