Guralp Systems CMG-6TC - Manual (Page 10)

CMG-6TC Configuring the response mode
4 Configuring the response mode
The CMG-6TC is available in two versions. Each version has a set of
four different frequency response modes, from which the operator can
choose. The four response modes are referred to as SP (short period),
SMP (short-medium period), LMP (long-medium period) and LP (long
period).
Response
Mode
Build Version A
pass-band
Build Version B
pass-band
SP 1 second to 100 Hz * 1 second to 100 Hz *
SMP 10 seconds to 100 Hz * 30 seconds to 100 Hz *
LMP 30 seconds to 100 Hz * 60 seconds to 100 Hz *
LP 60 seconds to 100 Hz * 120 seconds to 100 Hz *
* Versions with 50Hz low-pass corners are also available.
The response mode can be changed at any time using either of the
following methods:
1. Using the serial console menu (see section 5.2 on page 11).
2. By connecting specific pins on the connector to digital
ground (see section 4.2 on page 8).
In order to use the first method (serial console menu), connector pins
S and T should be left open circuit (not connected).
In order to use the second method (connector pins), the serial console
menu should first be used to set the response mode to “LP” (option
0).
4.1 Setting the response mode using the serial
console
To configure the 6TC response mode using the serial console menu,
follow the instructions given in section 5 on page 10. Note that pins S
and T on the connector should be left open circuit when relying on the
menu to set the response mode.
4.2 Setting the response mode using the
connector pins
Note: Refer to Appendix A on page 13 for information on
connector pin-outs.
MAN-060-0005 8 Issue C - February 2015