NTE1570 View Datasheet(PDF) - NTE Electronics
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NTE1570 Datasheet PDF : 5 Pages
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Notes:
Note 1. VAGC (P5 EXT. Applying Voltage) = 11.5V, PIF IN: f = 58.75MHz 1kHz 30% AM Modulation.
Adjust PIF input level (vi) so that the detected output of P15A with high impedance probe will
be 0.8VP–P and measure the input level.
Note 2. VAGC = 4V. Measure PIF input level (vi) same as Note 1.
Note 3. PIF IN: f = 58.75MHz CW 15mVrms. Measure DC level of P15.
Note 4. PIF IN: f = 58.75MHz, APL 100%, 87.5% AM modulation. P5: Ppen.
(1) Adjust PIF input level 50mVP–P and measure the detected output level v01P–P.
(2) Then increase the input level so that the detected output level will be 1.1 x v01P–P
and measure the input level.
Note 5. VAGC = 8V. PIF IN: 58.75MHz ±10MHz variable or sweep 15mVrms measure DC level of
P15.
Note 6. VAGC = 8V (GR = 30dB). SG1: 58.75MHz CW, SG2: 58.65 to 40MHz variable.
(1) Setting output of SG1 so that DC level of P15 will be 4V.
(2) Setting output of SG2 (58.65MHz) so that AC level of P15 will be 0.5VP–P.
(3) Decreaseing frequency of SG2 until AC level of P15 will be 0.35VP–P
(–3dB of 0.5VP–P) then read fSG2 = F, fBW = 58.75–F MHz
Note 7. SG1: 58.75MHz, 1kHz 80% AM modulation 100mVrms. SG2, SG3: OFF. Setting VAGC so
that output AC level of P15 will be 2.7VP–P. Measure CL of P15 after setting to 0% AM of SG1.
Note 8. Measure I2nd of P15 same as Note 7.
Note 9. VAGC = 8V. SG1: 58.75MHz (P = Picture) 100mVrms. SG2: 54.25MHz (S = Sound)
32mVrms(–10dB of SG1). SG3: 55.17MHz (C = Chroma) 32mVrms(–10dB of SG1).
(1) Seting VAGC so that the output tip level (lower) of P15 will be 3V DC.
(2) Measure the level difference (dB) between c–level and 920kHz level.
Note10. VAGC = 8V. PIF IN: f = 58.75MHz video signal (ramp) 87,5% AM 100mVP–P. Setting ATT
so that the sync tip level of P15 will be 2.5V DC. Measure DP and DG.
Note 11. VAGC = 5V, f = 58.75MHz. Measure RIN, CIN.
Note12. AFT sensitivity ∆F/∆(V13–V14)
(1) INT, AGC (P5 Open)
(2) PIF Input: 58.75MHz ±1MHz, CW 15mVrms.
(3) Read the frequency (f1) of PIF when V13–V14 = –1V.
(4) Read the frequency (f2) of PIF when V13–V14 = 1V.
Then calculate ∆F/∆(V13–V14) = |f1–f2|
Note13. ∆FW, V13U, V14U, V13L, V14L
(1) INT AGC (P5 Open)
(2) PIF IN: 58.75MHz ±10MHz CW 15mVrms
(3) 9pF at Pin16 should b shorted
(4) Read the frequency (f1 or f2) when the V5 or V6 reduced to 90% level of A or B with
varing the frequency. Then band width is the difference from center requency (f0).
Note14. P5: Open. PIF IN: 58.75MHz CW 20mVrms.
(1) Adjust the voltage of Pin3 so that the voltage of Pin4 will be 6V DC.
(2) Measure the volatge at Pin3.
Note15. P5: Open. PIF IN: 58.75MHz, 100% APL 87.5% AM modulation signal amplitude 50mVP–P.
Measure detected output voltge (White peak to sync tip).
Note16. P5: Open. SG1: 58.75MHz CW 100mVrms. SG2: 54.25MHz CW 25mVrms. Measure SIF
(4.5MHz) output voltage at P15.
Note17. SIF IN: f = 4.5MHz, FM fMOD = 400Hz, ∆f = ±25kHz.
(1) Adjust SIF input level 100mVP–P and measure the detected output level vOS.
(2) Then decrease the input level so that the detected output level will be 3dB down of
vOS and measure the input level.
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