Document type:
Title:
Revision date:
Revision:
User's Manual (MUT)
Mod. V812 16 Channel Constant Fraction Discriminator
20/04/2009
4
NPO:
Filename:
Number of pages:
Page:
00101/97:V812x.MUTx/04 V812_REV4.DOC
23
11
2.4. External connectors
The location of the connectors is shown in Fig. 2.1. Their function and electromechanical
specifications are listed in the following subsections.
2.4.1. INPUT connectors
INPUT CHANNELS:
Mechanical specifications:
16 LEMO 00 type connectors.
Electrical specifications:
Negative polarity, 50 Ohm impedance.
Max input voltage: -5 V.
Min detectable signal: -5 mV.
VETO
INPUT:
Mechanical specifications:
1 LEMO 00 type connectors.
Electrical specifications:
Standard NIM logic signal, high impedance, 30 ns
minimum FWHM; leading edge of the VETO signal
must precede of at least 18 ns the leading edge of
the input and overlap completely the input signal.
TEST
INPUT:
Mechanical specifications:
1 LEMO 00 type connectors.
Electrical specifications:
Standard NIM logic signal, high impedance
8 ns minimum FWHM
Max input frequency: 30 MHz
2.4.2. OUTPUT connectors
OUTPUT CHANNELS:
Mechanical specifications:
4 Header 3M 3408-D202 type, 8+8 pin connectors.
Electrical specifications:
Differential ECL level on 110 Ohm impedance; pulse
width adjustment from 16.5
±
1.5 ns to 270
±
25 ns;
maximum time walk is ±400 ps for input signals in
the range from -50 mV to -5 V with 25 ns rise time.
Input/Output delay: set delay+4.5
±
2 ns.
OR OUTPUT:
Mechanical specifications:
1 LEMO 00 type connectors.
Electrical specifications:
Standard NIM logic signal, 50
Ω
impedance.
Rise/fall
time
<
4
ns.
Max output frequency: 30 MHz.
Σ
OUTPUT:
Mechanical specifications:
1 LEMO 00 type connectors.
Electrical specifications:
