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
8
TTL
: 50 ns to 10 s wide, 4.5 ns rise/fall time, Fan-Out of 2 on
LEMO 00 type connectors
ECL
: 2 ns to 10 s wide, 2 ns rise/fall time, male pin-couple
Function:
Negated
output
pulse
WSET
:
Signal features:
0 to 5 V DC input on LEMO 00 type connector (1 k
Ω
input
impedance)
Function:
It allows to perform the output pulse fine adjustment via an
external voltage: 0 V
→
“short” pulse, 5 V
→
“long” pulse
N.B.: WSET must never exceed the 5 V value in order to avoid damage to the input
stage.
2.5. Other
components
OPERATION LEDS
:
2 green/red LEDs (see § 3.5)
WSET/FINE ADJUSTMENT
:
Two 2-position switches (see § 3.3)
COARSE ADJUSTMENT
:
Two 9-position rotary switches (see § 3.3)
FINE ADJUSTMENT
:
Two rotary handles (see § 3.3)
2.6. Technical specifications table
Table 2.2 Mod. V993 B Technical Features
Packaging
1U-wide VME unit
Output
3
/ Section
OUT
: NIM/TTL signal with a Fan-Out of 2, ECL signal
/OUT
: negated NIM/TTL signal, ECL signal
Output width
50 ns ÷ 10 s (NIM, TTL and ECL levels)
WSET
0 ÷ 5 V
START/OUT delay
6
<25 ns
RESET delay
~30 ns: the timing cycle stops ~30 ns after the RESET pulse is sent
Rise/Fall Time
< 2 ns
Thermal stability
4
-60 ppm/°C
3
NIM outputs drive a 50
Ω
load (termination required), ECL outputs drive a 110
Ω
load
(termination not required)
4
Measured with a 1 µs NIM output pulse (1 ms full scale)
