FL040075 FL4/75
FL040076 FL4/76
FL040077 FL4/77
FL040078 FL4/78
FL040079 FL4/79
FL040080 FL4/80
FL040081 FL4/81
FL040082 FL4/82
NICAM 3 Input Filter. Provides low-pass input filter to
15kHz together with CCITT pre-emphasis to Rec .J17 for use
in NICAM 3 coders CD2M/17 when option 2 is required. This
unit is a plug-in alternative to the FL4/68B, which it
supersedes, and the AM6/27 Variable Emphasis Limiter. To
have same code plate as FL4/68B. Power requirements +18V
at 46mA, -18V at 32mA.
CHl/64A.
Supersedes FL4/68B.
Parent equipment CD2M/17. DD 1982. DDMI 6.393(83). DDHB
6.206(83).
5.8MHz Low Pass Filter. This unit contains a 5.8MHz LPF
and SIN2 Filter. The bitstream input and output are at
8448 kbit/s NRZ with 75Q input and output impedances. The
unit is mounted on a BT type 62 chassis. 1 card 114mm x
312mm. Parent equipment BT equipment. DD 1983. DDHB
6.256(84). MI 6.422(84).
5.8 MHz Low Pass Filter. This unit contains a 5.8MHz and
SIN2 Filter. The bitstream input and output are at 8448
kbit/s with 75Q input and output impedance. A unit which
is electrically identical to this unit is mounted on a B.T.
type
62
chassis
and
coded
FL4/76.
CHl/65B.
Parent
equipment CD4M/8. DD 1984. MI 6.423(84). HB 6.257(84).
Transmitter Measurement Filter. Electronic 15 kHz L.P.
filter, tailored for installation in audio test-set ME2/5,
as part of modification kit for units used at Tx sites.
Power requirements :1:6 V, drawn from ME2/5 power rails.
Printed board, approx. 75 x 150 mm. Parent equipment
ME2/5. DD 1984. MI A.I006(86).
Audio Low-Pass Filter. 15 kHz Low-Pass Filter designed for
insertion in the multiplex link of a Receiver-Drive
Transposer, to convert the re-broadcast signal to mono.
All carriers above 19 kHz inclusive are removed. 75 Q
in/out BNC connectors. Eddystone Dye-cast box. Parent
equipment TM4M/4. DD 1984.
Dual 20 kHz Input Filter. A 20 kHz two-channel anti-
aliasing filter for use with the C08/13. It includes an
electronic
input
balance.
Maximum input
level +20
dB
(0.775 V). Power Requirements :!:l8 V, 150 mA each. 4 U
Unsupported Card with Front Panel. Chassis extender CH4/5.
DD(3) 1986. DDHB 3.333(85).
Dual 20 kHz Output Filter. A 20 kHz two-channel anti-
imaging filter for use with the C09/9. It includes
electronic output balance and equalisation for 48 kHz
sampling. Maximum output level +20 dB (0.775 V). Power
Requirements :1:18 V, 150 mA each. 4 U Unsupported Card with
Fron t Panel. Chas s is extender CH4 / 5. DD (3 ) 1986. DDHB
3.333(85).
Dual 7 kHz Input Filter. 7 kHz two-channel anti-aliasing
filter for use with a 16 kHz sampling system. It includes
an electronic input balance. Maximum input level +20 dB
(0.775 V). Power Requirements :!:l8 V, 150 mA each. 4 U
Unsupported Card with Front Panel. Chassis extender CH4/5.
DD(3) 1986. DDHB 3.333(85).
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