GE020644 GE2S/644
GE020644 GE2S/644
GE2SP/644
GE040006 GE4/6
GE4/6A
GE4/6B
GE4/6C
GE4P/6
GE4P/6A
which delivers a standard-level HDB3-coded tenary signal
into a 75 ohm load. The following different versions
exist, with a few component-value variations:
Code
Use with Clock Freq.
GE2/643A
4fsc
NB HBD3 output stage omitted
GE2/643B 676kHz
GE2/643C 8448kHz
GE2/643D 2048kHz
The unit forms part of 68 Mbit/s demultiplexing equipment
CD4M/505. Power requirements +12V, -12, +5V, -5V at
currents to be advised. PN1/29J. Parent equipment
CD2M/505. RD 1982.
Oscilloscope Trigger Generator. Provides trigger pulses to
trigger an oscilloscope on various parts of the T.V.
Waveform. Also provides clamped video and bright up. The
unit is 525/625 line compatible and is microprocessor-
controlled. Power requirements 25W. CH1/65D. DD 1984.
DmlI 9.332(85).
Oscilloscope Trigger Generator. Provides trigger pulses to
trigger an oscilloscope on various parts of the T.V.
waveform. Also provides clamped video and bright up. The
unit is 525/625 line compatible and is microprocessor
controlled. Power requirements 25 W. CH1/65D. DD 1984.
Oscilloscope Trigger Generator. This is the portabble
version of the GE2S/644 and consists of this generator
housed in a Carrying Case CS2/24D. Power requirements
240 Vac. CS2/24D. Sub-units GE2S/644. DD 1985.
Routine AF Test Generator. Audio frequency test signal
generator providing an automatically repeating sequence of
test tones at 12 frequencies with the output level
programmes for routine measurements of frequency response,
total harmonic distortion and noise. Manual or remote
override facilities are incorporated. Output imped ance
<5Q for feeding internal lines etc. Internal mains power
unit. CH1/65D. DD 1976.
Routine A.F. Test Generator. Modified version of GE4/6 the
test sequence precisely simulating the output of the TE1/1
so that the performance of the TEl/4 may be rigorously
checked. Power requirements 240 V mains. CH1/65D. DD
198!.
Routine A.F. Test Generator. Modified version of GE4/6 to
provide distribution feed of sequential tone signal. For
bay mounting, a termination panel PA20/24 is required.
CH1/64D. Supersedes OSl/l. DD 1981.
Routine
A.F.
Test
Generator.
Development
of
GE4/6
to
provide facilities both for network testing and pre-
transmission tests at O.B. sites. For bay-mounting, a
termination panel PA20/26 is required. Power requirements
240 V mains. CH1/65D. DD 1982.
Routine A.F. Test Generator. Consists of Test Generator
GE4/6 mounted in portable case CS2/24D. Power requirements
240V mains. CH1/65D. DD 1980.
Routine A.F. Test Generator. Modified version of GE4P/6A,
the test sequence precisely simulating the output of the
TE1/1 so that the performance of the TE1/4 may be
rigorously checked. Power requirements 240V mains.
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