CAEN
Electronic Instrumentation
UM2679 – A1536 AG536 Family Power Supply Boards
4
1.
Overview
The Mod. A1536 – AG536 is a family of HV boards, available with either positive or negative polarity, compatible
with the CAEN Universal Multichannel Power Supply System (SY1527, SY2527, SY3527, SY4527, SY5527).
The A1536 and A1536H channels share a common floating return, which allows on-detector grounding reducing the
noise level; the floating return is insulated from the crate earth up to ±50 V (with a 65 V hardware limit); the return
of the AG536 channels is wired to the crate Earth reference.
A1536 and AG536 output range is 0 ÷ 3 kV, with 1 mA maximum output current (800µA for A1536V and AG536V)
and 100mV set and monitor resolution. A1536H output channels offer dual current ranges (software selectable):
High Power: 0 ÷ 1 mA (Iset res.: 20 nA; Imon res.: 1 nA; 1.5W maximum channel power) and High Resolution:
0 ÷ 100 µA (Iset res.: 20nA; Imon res.: 100 pA); it features also 50mV and 5mV set and monitor resolution
respectively.
The boards are provided with both current and voltage protections. If overcurrent occurs, the relevant channel can
be programmed either to turn off after a programmable trip time or to keep on providing the maximum allowed
current: this particular feature allows the modules to work as current generator. The maximum output voltage can
be fixed, through a potentiometer located on the front panel, at the same common value for all the board channels
and this value can be read out via software.
The HV RAMP-UP and RAMP-DOWN rates may be selected independently for each channel in the 1 ÷ 500 V/s range
(1 V/s step).
The 12 channel versions output voltages are provided via SHV connectors; 24 channel versions are available with
either SHV connectors or Radiall 52-pin connector; all other models feature a Radiall 52-pin connector. 24 channel
SHV versions are double width boards (10 TE); all other versions are single width (5 TE). “Multipin” versions have
also the safety board interlock: this protection allows to disable the primary HV generation when the HV outputs
are not connected to their loads.
Tab. 1 – Available versions
Version
Ch Nr.
Polarity
Connector
Return
Size
IMax
A1536DN
12
Negative
SHV
Common Floating
1U
1 mA
A1536DP
12
Positive
SHV
Common Floating
1U
1 mA
A1536DM
12
Mixed
SHV
Common Floating
1U
1 mA
A1536HDN
12
Negative, dual range
SHV
Common Floating
1U
1 mA
A1536HDP
12
Positive, dual range
SHV
Common Floating
1U
1 mA
A1536HDM
12
Mixed, dual range
SHV
Common Floating
1U
1 mA
AG536DN
12
Negative
SHV
Ground
1U
1 mA
AG536DP
12
Positive
SHV
Ground
1U
1 mA
AG536DM
12
Mixed
SHV
Ground
1U
1 mA
A1536LN
24
Negative
Multipin
Common Floating
1U
1 mA
A1536LP
24
Positive
Multipin
Common Floating
1U
1 mA
A1536HLN
24
Negative, dual range
Multipin
Common Floating
1U
1 mA
A1536HLP
24
Positive, dual range
Multipin
Common Floating
1U
1 mA
AG536LN
24
Negative
Multipin
Ground
1U
1 mA
AG536LP
24
Positive
Multipin
Ground
1U
1 mA
A1536SN
24
Negative
SHV
Common Floating
2U
1 mA
A1536SP
24
Positive
SHV
Common Floating
2U
1 mA
A1536SM
24
Mixed
SHV
Common Floating
2U
1 mA
A1536HSN
24
Negative, dual range
SHV
Common Floating
2U
1 mA
A1536HSP
24
Positive, dual range
SHV
Common Floating
2U
1 mA
A1536HSM
24
Mixed, dual range
SHV
Common Floating
2U
1 mA
AG536SN
24
Negative
SHV
Ground
2U
1 mA
AG536SP
24
Positive
SHV
Ground
2U
1 mA
AG536SM
24
Mixed
SHV
Ground
2U
1 mA
A1536N
32
Negative
Multipin
Common Floating
1U
1 mA
A1536P
32
Positive
Multipin
Common Floating
1U
1 mA
A1536HN
32
Negative, dual range
Multipin
Common Floating
1U
1 mA
A1536HP
32
Positive, dual range
Multipin
Common Floating
1U
1 mA
AG536N
32
Negative
Multipin
Ground
1U
1 mA
AG536P
32
Positive
Multipin
Ground
1U
1 mA
A1536VN
32
Negative, dual range
Multipin
Common Floating
1U
800µA
A1536VP
32
Positive, dual range
Multipin
Common Floating
1U
800µA
AG536VN
32
Negative
Multipin
Ground
1U
800µA
AG536VP
32
Positive
Multipin
Ground
1U
800µA
“Mixed” polarity means that half of the channels are negative and half positive