27/09/2002
V560 User Manual
7
2.3. INTERNAL COMPONENTS
(refer to fig.2.2 and Appendix C - components location)
JUMPERS
- No.1, jumper "JP2"; for the -5 V power selection.
SWITCHES
- No.8, changeover switches (group "JP3..JP10"). For connect the two channels of each section to
obtain a single 64 bit scale.
- No.6, rotary switches for the module VME Base address selection.
2.4. POWER REQUIREMENTS
Crate Type
+ 5 V
- 12 V
- 5 V
Standard
2 A
160 mA
==
Type V430
2 A
==
160 mA
2.5. CHARACTERISTICS OF THE SIGNALS
- INPUT CHANNELS: std. differential ECL level, 110
Ω
impedance;
max. frequency:100 MHz; min. width 5 ns;
min. time interval between two pulses: 5 ns.
- VETO(*):
std. NIM level, high impedance;
min. width 50 ns;
it must precede the input channel signal by at least 35ns.
- CLEAR(*):
std. NIM level, high
impedance; min. width: 60 ns.
- TEST(*):
std. NIM level, high impedance; max. frequency: 50 MHz;
min. width: 10 ns.
(*) These inputs are high impedance and each one is provided with two bridge connectors for daisy chaining. Note that
the high impedance makes these inputs sensitive to noise, so the chains have to be terminated on 50
Ω
on the last
module; the same is needed also if one module only is used, whose inputs have thus to be properly matched.
