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054001
OUTPUT UNIT
Instruction Manual
-} GOULD ADVANCE
Telephone 01-500 1000
Telegrams Attenuate Ilford
Telex 263785
SECTION 1 Introduction 3 SECTION 5 Maintenance 12
5.1 Fitting the 4001 to the OS4000 12
SECTION 2 Specification 4 5.2 Access 13
5.3 Fault finding 14
SECTION 3 Operating Instructions 5 5.4 Setting up Procedure 15
3.1 General 5
3.2 Chart recorder speed 5 SECTION 6 Circuit Diagrams and Components
3.3 Driving a chart recorder 5 Schedules 17
3.4 The Read-out cycle 5
3.5 Remote start 5 SECTION 7 Guarantee and Service Facilities 21
3.6 Function Generation 7
ILLUSTRATIONS
3.7 Digital Outputs 7
Fig. 1 Typical read-out cycle 6
Fig. 2 Connections to back panel socket 7
SECTION 4 Circuit Description 8
Fig. 3 Block diagram 8
4.1 General 8
Fig. 4 Data Selector - mechanical
4.2 D-A Converter 9
10
equivalent
4.3 Latches and latch control 9
11
Fig. 5 Clock delay - timing diagram
4.4 X-ramp counter 9
Fig. 6 Internal view of 4001 12
4.5 Data Selector 9
Fixing details 13
Fig. 7
4.6 Clock delay 10 19
Fig. 8 Circuit diagram
Introduction
The 400 I option is designed to be added to a standard the closing of these contacts and the start of read out
OS4000 Digital Storage Oscilloscope to enable the infor- which can be preset to allow a chart drive motor to
mation in store to be retransmitted in both analogue and accelerate.
digital form. Two analogue outputs are provided, and
these are intended primarily to drive strip chart and X-V
recorders. Channel I and 2 signals are available simultan- . A socket on the rear panel presents the output infor-
eously at a read-out rate which can be varied to suit the mation in digital form as two eight bit parallel signals for
chart recorder, with a slowest time of 200 seconds Y and one ten bit parallel signal for the X ramp. Control
representing the 10 division display. In addition, a facilities for remote start and continuous readout are also
corresponding X-ramp signal is provided for X-Y recorder provided. The latter can be used for continuous
use. The unit also incorporates relay contacts for pen lift generation of a recorded transient or frequency shift of
or chart motor control. There is a variable delay between recorded waveforms.
Specification Section 2
ANALOGUE OUTPUTS Via B.N.C. connectors
Remote continuous read-out by T.T.L. low or contact
Channels 1 and 2 closure to ground.
Amplitude lOOmV per cm of screen height.
Bipolar with OV corresponding to Delay between start command and
middle of screen initiation of read-out cycle set by front
Accuracy Output voltage per cm of display