Model 8640B TM 9-4935-601-14-7&P
Table 1-2. Recommended Test Equipment (3 of 7)
Instrument Type Critical Specifications Suggested Model Use*
With Filter Kit Output Low Pass Filters for FM Dis- With HP P,A
criminator (20 kHz and 1 MHz 10531A
Butterworth filters)
600 Ohm Feedthrough Impedance: 6002 ± 1% shunt HP 11095A P,A
Connectors: BNC
520 MHz Notch Notch Frequency Accuracy: HP 08640-60502 P
Filter 500 - 540 MHz
Notch Rejection: >60 dB
See Figure 1-7
4 MHz Low Pass Filter 4 MHz low pass (3 pole) CIR-Q-TEL P,A
(2 required)
Impedance: 50Ω
FLT/21B-4-3/
VSWR: <1.5:1 50-3A/3B
Ripple: <±0.2 dB
1.5 MHz Low Pass 1.5 MHz low pass (3 pole) CIR-Q-TEL P,A
Filter
Impedance: 50Ω
FLT/21B-
VSWR: <1.5:1 1500K-3/50-
Ripple: <±0.2 dB 3A/3B
15 kHz Low Pass 15 kHz low pass (7 pole) CIR-Q-TEL P
Filter
Impedance: 50Ω
FLT/21B-15K-
Ripple: <±0.2 dB 7/50-3A/3B
3 kHz Low Pass 3 kHz low pass (5 pole) CIR-Q-TEL P
Filter
Impedance: 50Ω
FLT/21B-3K-
Ripple: <±0.2 dB 5/50-3A/3B
Frequency Counter Range: to 550 MHz HP 5327C P,A,T
Input Sensitivity: <100 mV
Inputs: 50Ω and high impedance
(1 MΩ)
Standard Reference Accuracy:
<3 x 10
-7
/month aging rate
<5 x 10
-9
/s rms short term
stability
<±2.5 x 10
-6
, 0 - 50°C temper-
ature stability
Optional Reference Accuracy: Option H49 P
<3 x 10
-9
/day aging rate
<1 x 10
-10
/s rms short term
stability
<1 x 10
-8
, 0 - 50°C temper-
ature stability
*P = Performance; A = Adjustments; T = Troubleshooting
1-15
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