Racal Instruments 9916 User Manual

(2) Slacken off the cable clamp on the metal cover on the cable of the flying
lead, and push the cover away from the connector.
(3) Plug the flying lead connector into the Data Output edge connector in the
counter, noti ng the keyway which ensures correct orientation.
(4) To minimise r.f. radiation interference, the metal cover on the cables
(4.) should be placed over the edge connector and held into place by the two
screws which originally secured the cover plate removed in (1). The cable
clamp should then be tightened.
(5) Connect the interface unit to the data processing equipment via the fixed
50-way socket.
MODES OF OPERA Hm
REMOTE DISPLAYS
Connecti ons
8. If the interface is required to drive a remote display, or such other equipment that
does not require the data to be held for a period longer than the gate time, check
the following pin conditions on the 50-way connector:-
Pin No.
19
24
49
Required Connection
Must be ei ther open circuit
or connected to OV.
Latched Operation
9. The display is latched and is updated at the end of each gate time, irrespective of
the counter function.
Unlatched Operation
10. (1) If the interface Unit is connected to a genuine remote display the subjective result
is that the display will appear to follow the counter, for both latched and un latched
counter modes.
(2) The data outputs wi II be updated every 3 to 4 ms.
(3) The blue wire IH
'
on the 28-way flying lead connector should ~e disconnected and
reconnected to 'F
1
together with the violet wire. For other applications refer to paras
16 to 18.
USING EQUIPMENT WHICH PROVIDES HOLD SIGNALS
11. Differing instructions apply, depending on whether the counter is a frequency meter or
universal counter timer (UCT) as described in paras 12 to 15.
-Sectin 4 : 99 Series. Appendix 1. Pege App. 3

Racal Instruments 9916 Specifications

General

Brand	Racal Instruments
Model	9916
Category	Measuring Instruments
Language	English