HP 651B - Page 2

Section I
Model 651B
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Figure 1-1. Model 651B Test Oscillator
Table 1-1. Specifications
Frequency Rai^e: 10 Hz to 10 MHz, 6 bands, dial
calibratiCHis: 1 to 10.
Dial Accuracy: (including warm-up drift and± 10%
line voltage variation).
±2%, 100 Hz to 1 MHz.
±3%, 10 Hz to 100 Hz and I MHz to 10 MHz.
Output:
Maximum: 3.16 V into 50 or 600f2
6.32 V open circuit
+23 dBm into 50
Ranges: 0.1 mV to 3.16 V full scale, 10 steps
in 1, 3, 10 sequence, coarse and fine ad¬
justable. -70 dBm to +23 dBm (50 out¬
put) full scale, 10 dBm per step, coarse
and fine adjustable.
Flatness: (Amplitude not readjusted to a ref¬
erence on the output monitor.)
±2% 100 Hz - 1 MHz
±3% 10 Hz - 1 MHz
±4% 10 Hz - 10 MHz*
* This specification applies only at 50 D or
75 ^ output. The response above 1 MHz at
the 600 Q outfHit is affected by capacitive
loads.
{Amplitude readjusted to a reference on
_ the ou^ut monitor.)
Range
Frequency
10 Hz 20 Hz 4 MHz 10 MHz
3 V and 1 V
2%
"1% '
2%
0.3 V to 0.3 mV
2.5%
1.5%
2.5%
0.1 mV
3% 2%
3%
Distortion: less than: 1% 10 Hz to 2 MHz, 2%
at 2 MHz to 5 MHz, 4% 5 MHz to 10 MHz.
Hum and noise: less than 0. 05% of maximum
rated output.
Output Monitor: voltmeter monitors level at input
of attenuator in volts or dB. Top scale calibrated
in volts. Bottom scale in dB.
Accuracy: ±2% of full scale.
Attenuator:
Range: 90 dB in 10 dB steps.
Overall accuracy: ±0. 075 dB, -60 dBm to+20
dBm.
±0.2 dB, -70 dBm to -60 dBm.
Amplitude Control: 20 dB range: coarse and fine.
Amplitude Stability: ±2% per mo. , 20°C - 30*^0.
Temperature range: 0*^Cto+50°C.
Power: 115 Vor 230 V ±10%, 30 W, 50 to 1000 Hz.
1-0
01810-2