Procedure:
Set the clock to the current time with the clock write command.
Send: DA DT CT 80 03 09 CK4 CK3 CK2 CK1 CS; Set real time clock
Where CK1, CK2, CK3, and CK4 are the four bytes of the time code.
5.16.2.Allow the
onds.
Note: other tests may be performed during this time.
Remove
Note; this may be the same power cycle used for the IQ Bus Dropout Relay Operation test.
Read the clock and compare its time with the current time.
Send: DA DT CT 80 03 0A CS
Return String: DA DT AK CT 80 03 0C CK4 CK3 CK2 CK1 CS
Where CK1, CK2, CK3, and CK4 are the four bytes of the time code.
The two times must be within one second.
4.6.16 IQ BUS MASTER CONTROL
Spec: Hardware can force the IQ Bus high. (Open the loop)
For this test, perform IQ communication via the Crown bus.
Procedure:
Send the Master IQ Bus command:
Send: DA DT CT C0 05 09 01 CS; Master IQ bus (Open loop)
Verify no echo responses on subsequent IQ commands: Suggested test string: 01 02 03 04 FE FF
Send the normal IQ Bus command…
Send: DA DT CT C0 05 09 00 CS; Unmaster IQ bus (Close loop)
Verify echo responses on subsequent IQ commands: Suggested test string: 01 02 03 04 FE FF
Return string: 01 02 03 04
4.6.17 IQ BUS DROPOUT RELAY OPERATION
Spec: IQ Bus remains connected when power is re- moved.
For this test, perform IQ communication via the Crown bus.
Procedure:
Power down
130447-1 Rev. A
Verify IQ messages pass through the unit under test: Suggested test string: 01 02 03 04 FE FF
Return string: 01 02 03 04 Reapply power to
4.6.18 IQ BUS HUB / DAISY CONNECTIONS
Spec: Both types on IQ Bus connections are functional.
Note: This product has two types of IQ bus connections. The Daisy type connects the input in one port of the dual
For this test, perform IQ communication via the Crown bus.
Procedure:
For each type of bus connection (Daisy, Hub), perform at least one of the above tests that require a test on the IQ response.
4.6.19 SHIPPING STATE RESTORATION
Spec: The
Note: This section may be skipped when testing a service unit if it is known that the customer wishes to retain the mixers settings and presets.
Note: The following steps must be performed as part of the final power down sequences to ensure the
Procedure:
Send the select preset 0 command:
Send: DA DT CT B2 7F 09 00 CS; Select preset 0 Send the load preset command:
Send: DA DT CT B4 7F 09 01 CS; Load preset
Note: The load preset command must be sent within approxi- mately 2 seconds of the select preset command.
Send the select preset 32 command:
Send: DA DT CT B2 7F 09 20 CS; Select preset 32 Send the load preset command:
Send: DA DT CT B4 7F 09 01 CS; Load preset
Note: The load preset command must be sent within approxi- mately 2 seconds of the select preset command.
Note: Preset 0 and 32 may also be selected using the front panel controls.
1)Use the “∧ ” and “∨ ” keys to select preset 0. (Display shows P00.)
2)Press “SEL” switch.
3)Use the “∧ ” and “∨ ” keys to select preset 32. (Dis- play shows P32.)
4)Press “SEL” switch.
©2000 Crown International, Inc.
