654A Test Oscillator - HP 654A Operating And Service Manual

Section 1 Model 654A
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Figure 1-1. Model 654 A Test Oscillator
Table I-I. Specifications
frequency range: 10 Hz to 10 MHz in 6 bands.
Frequency accuracy:
100 Hz (on
Xl
00 RANGE) to 5 MHz: +/-2%
10 Hz to 100 Hz: +/-3%
5 MHz to 10 MHz: +/-4%
Level flatness(+IO dBm and 0 dBm): +/-0 .5% referenced
to level at I kHz from 10Hz to 10 MHz for un-
balanced outputs, 10 Hz to 5 MHz for 135 ohm and
150 ohm outputs, and 10 Hz to I MHz for 600 ohm
output.
Attenuator
Range: 99 dB in 10 dB and I dB steps.
Accuracy: +/-1.5% (0.15 dB) except +/-10%
(I
dB) at
output levels below 60 dBm at frequencies greater
than 300 kHz .
Amplitude control: greater than 2 dB.
Amplitude accuracy: +/-1 % for 90 days (at I kHz,
+ I 0 dBm level with meter centered).
Meter tracking: +/-0.05 dB.
Balance (on balanced impedances) when measured by the
procedure given in Paragraph 5-28 : greater than 50 dB
for frequencies from 10Hz to I MHz, greater than
40 dB to 5 MHz .
Distortion (THD)
10Hz to I MHz : greater than 40 dB below fu nda-
mental .
I MHz to 10 MHz: greater than 34 dB below funda-
mental.
Hum and noise: greater than 70 dB down at full output.
Table 1-2. General Information
Output impedance: 50 ohm unbalanced, 75 ohm un-
balanced, 135 ohm balanced, 150 ohm balanced and
600 ohm balanced.
Output level: +11 dBm to -90 dBm, 10 dB and I dB steps
with adjustable +/-1 dB meter range; calibrated for
each impedance.
Meter resolution: 0.02 dB.
1·2
Output connectors: BNC . Maximum voltage which can be
applied to the output: less than +/-3 V peak.
Counter output: greater than 0 .1 V rms into 50 ohm ,
BNC connector.
Operating temperature: OOC to +55 0 C (32°F to 130°F).
Power: 115 V or 230 V +/ . 10%, 48 Hz to 66 Hz, 30 W
.1/
1
nominal, 35 W max.
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