Service manual

Model 5304A
General Information
Table 91)1-1. 5304 A Timer/Counter Specifications
INPUT CHANNELS A ANI) B
Range: DC coupled; 0 to 10 MHz.
AC coupled; 100 Hz to 10 MHz.
Sensitivity (min): 25 mV rms sine wave
to I MHz. 50 mV rms sine wave to 10
MHz. 150 mV p-p pulse at minimum
pulse width, 40 nsec. Sensitivity can be
decreased by 10 or 100 times using
ATTENUATOR switch.
Impedance: 1 Mil shunted by less than 30 pK
Overload Protection: 250 V rms on Xl()
and XI00 attenuator settings. On XI
attenuator setting 120 V rms up to 1 kHz,
decreasing to 10 V rms at 10 MHz.
Trigger Level: PRESET position centers
triggering about 0 volts ±25 mV, or con-
tinuously variable over the range of 1 V to
+
1 V times attenuator settings.
Slope: Independent selection of triggering
on positive or negative slope.
Channel Inputs: Common or separate lines.
Gate Output: Rear panel BNC. TTL low
level while gate is open. May be used
to intensity modulate an HP oscilloscope.
TIME INTERVAL
Range: 500 nsec to 10 • sec.
Input: Channels A and B; can be common
or separate
Overload: Maximum recommended levels for
pulse signals is 2 V p-p. Clipping occurs
at 3 V p-p.
Resolution: 100 nsec to 10 ms in decade
steps.
Accuracy: +1 count + time base accuracy
+ trigger error.*
Display: fjs, ms, or s (seconds) with positioned
decimal point.
Time Interval Holdoff: Front panel con-
centric knob which inserts variable delay
of approximately 100 /jsec to 100 msec be-
tween START (Channel A) and enabling
STOP (Channel B); may be disabled. Elec-
trical inputs during delay time are ignored.
Delay may be digitally measured in CHECK
position. Delay Output: rear panel BNC.
TTL low level during delay time. May be
used to intensity modulate an HP
oscilloscope.
PERIOD AVERAGE
Range: 10 Hz to 1 MHz.
Input: Channel A.
Period Averaged: 1 to 10' automatically
selected for maximum resolution.
Frequency Counted: 10 MHz.
Accuracy:
+
1 count + time base accuracy
+ trigger error.**
Display: /JS, ms with positioned decimal point.
FREQUENCY
Range: 0 to 10 MHz.
Input: Channel A.
Gate Times: Manually selected 0.1, 1, or 10
seconds. AUTO position selects gate time
to fill display for maximum resolution with-
in a 1-second measurement time.
Accuracy: +1 count + time base accuracy.
Display: Hz, kHz, and MHz with positioned
decimal point.
OPEN/CLOSE (Totalizing)
Range: 10 MHz maximum.
Input: Channel A
Function: Input signal totalized while gate
open. Opening and closing of gate initiated
by front panel pushbutton switch.
GENERAL
Check: Inserts internal 10 MHz reference
frequency into Channels A and B. Time
Interval Holdoff may be digitally measured
by switching to CHECK and TIME IN
TERVAL positions.
Operating Temperature: 0° to 50°C.
Power Requirements: Including 5300A
mainframe, nominally 10 watts. Minimum
of 3 hours operation (typically 5 hrs) at 20 C
to 30°C operating and charging temperatures.
Weight: Net, 1 lb (0.9 kg). Shipping, 314
lbs (1.5 kg).
"For any waveshape, trigger error is less than
±
0.005
Signal Slope (V/ ps) /js
**Trigger error is less than ±0.3% of one
period, i periods averaged for signal with
40 dB or better signal-to-noise ratio.
91)1-2