cxa1202q-z Sony Electronics, cxa1202q-z Datasheet - Page 19

• Manufacturer Part Number: cxa1202q-z
• Description: Rec/pb Amplifier For Vcr
• Manufacturer: Sony Electronics

1
2
(Reference) Test Method of Head AMP C/N
(1) input signal
(2) Signal injection circuit
(3) SPECTRUM ANALYZER setting conditions:
(4) Keep the medium range frequency compensation circuit flat. (Voltage of Pins MT1 and MT2 is made
(5) Observe the output at Pin 20 V RF OUT.
The total input capacitance includes all capacitances of REC AMP, rotary transformer, shielding wire, etc.,
in addition to the input capacitance of the Head AMP alone (47pF).
Notes) 1. A chip resistance is used for 1 (ordinary carbon resistance produces inductance.)
Level –42.0dBm [signal source: 50 ]
(generates a voltage of 100µVp-p at both ends of 1 ).
The signal is input from A and B in Fig. 1. The equipment used for the input is shown in Fig. 2.
RBW:
VBW:
Sweep time: 500s
Span:
equal to that of Pin VREG)
2. 49 is composed of 51 /1200 .
BNC
10kHz
1Hz
500kHz
Signal source
50
49
1
Head inductance
Fig. 1
Fig. 2
– 19 –
1.55µH
B
51
During signal
1
Span 500kHz
A
5MHz
1200
Winding ratio
CXA1202Q-Z
CXA1202R
head AMP
3:5
C/N
A
B
To drum GND
During shortcircuit between A – B
CXA1202Q-Z/CXA1202R