Read Sharp 28LF-94H Service Manual online
6
AK - 53
CHASSIS
CIRCUIT DESCRIPTIONS
2. TUNER SPECIFICATION
General description of UV1316 MK3 (Philips) /CTF55XX (Thomson):
UV1316 MK3 (Philips) /CTF55XX (Thomson) tuners, which are designed to meet a wide range of applications are PLL
tuners; It is a combined VHF, UHF tuner suitable for CCIR systems B/G, D/K, H, L, L’, I and I’. The low IF output
impedance has been designed for direct drive of a wide variety of SAW filters with sufficient suppression of triple
transient.
UV1316 MK3 (Philips) /CTF55XX (Thomson) tuners, which are designed to meet a wide range of applications are PLL
tuners; It is a combined VHF, UHF tuner suitable for CCIR systems B/G, D/K, H, L, L’, I and I’. The low IF output
impedance has been designed for direct drive of a wide variety of SAW filters with sufficient suppression of triple
transient.
Features of Tuner:
1. Those tuners are small sized UHF/VHF tuners
2. Systems CCIR: B/G, H, L, L’, I and I’; OIRT: D/K
3. Digitally controlled (PLL) tuning via I
1. Those tuners are small sized UHF/VHF tuners
2. Systems CCIR: B/G, H, L, L’, I and I’; OIRT: D/K
3. Digitally controlled (PLL) tuning via I
2
C-bus
4. Off-air channels, S-cable channels and Hyperband
5. World standardized mechanical dimensions and world standard pinning
6. Compact size
7. Complies to “CENELEC EN55020” and “EN55013”
5. World standardized mechanical dimensions and world standard pinning
6. Compact size
7. Complies to “CENELEC EN55020” and “EN55013”
Pinning:
1.
Gain control voltage (AGC)
:
4.0V, Max: 4.5V
2.
Tuning voltage
3.
I²C-bus address select
:
Max: 5.5V
4.
I²C-bus serial clock
:
Min:-0.3V, Max: 5.5V
5.
I²C-bus serial data
:
Min:-0.3V, Max: 5.5V
6.
Not connected
7.
PLL supply voltage
:
5.0V, Min: 4.75V, Max: 5.5V
8.
ADC input
9.
Tuner supply voltage*
:
33V, Min: 30V, Max: 35V
10.
Symmetrical IF output 1
11.
Symmetrical IF output 2
*33V is obtained from FBT of large signal board.
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