Document type:
Title:
Revision date:
Revision:
User's Manual (MUT)
Mod. V993 B Dual Timer
03/03/2004
3
NPO:
Filename:
Number of pages:
Page:
00114/00:V993x.MUTx/03 V993B_REV3.DOC
10
7
2.4. Signals
features
1
START INPUT:
Signal features:
NIM
: Leading edge sensitive, 2.5 ns minimum FWHM on
LEMO 00 type connector
TTL
: Leading edge sensitive, 1.5 ns minimum FWHM on
LEMO 00 type connector
ECL
: Leading edge sensitive, 2.5 ns minimum FWHM on a
male pin-couple
START/RESET Switch
2
: Momentary switch for single cycle
operation
Function:
Timer triggering signal
VETO INPUT:
Signal features:
NIM/TTL
: TRUE level (within ±2 ns of START leading edge)
on LEMO 00 type connector
ECL
: TRUE level (within ±2 ns of START leading edge) on a
male pin-couple
Function:
It disables triggering
RESET INPUT:
Signal features:
NIM/TTL
: Leading edge sensitive, 3 ns minimum FWHM on
LEMO 00 type connector
ECL
: Leading edge sensitive, 3 ns minimum FWHM on a
male pin-couple
START/RESET Switch
2
: Momentary switch
Function:
It stops the timing cycle at any time. After a RESET the
module is at rest until the next START.
ENDM OUTPUT:
Signal features:
NIM
: 8 ns wide on LEMO 00 type connector
TTL
: 10 ns wide on LEMO 00 type connector
ECL
: 8 ns wide on a male pin-couple
Function:
It marks the end of the timing cycle
OUT:
Signal features:
NIM
: 50 ns to 10 s wide, 2 ns rise/fall time, Fan-Out of 2 on
LEMO 00 type connectors
TTL
: 50 ns to 10 s wide, 4.5 ns rise/fall time, Fan-Out of 2 on
LEMO 00 type connectors
ECL
: 50 ns to 10 s wide, 2 ns rise/fall time, male pin-couple
Function:
Output
pulse
/OUT:
Signal features:
NIM
: 50 ns to 10 s wide, 2 ns rise/fall time, Fan-Out of 2 on
LEMO 00 type connectors
1
All ECL inputs are 110
Ω
terminated, all NIM/TTL inputs are 50
Ω
terminated
2
START and RESET share the same 3-position switch: Left
→
RESET, Middle
→
NEUTRAL
(stable), Right
→
START